Your Nation's Main Battle Tank (No Mechs) [Part 1]

[Samozaryadnyastan]

(Image)
RandomGuyNation Military Industries Main Battle Tank-90 (RMI-MBT90), popularly called the "Lancer"
Information is classified by the RGN Ministry of Defense.

[OOC] A Merkava?

[Malgrave]

The Malgravean military fields a small number of K2 tanks for possible defensive actions, although as the Malgravean Military is more focused towards peacekeeping with prefer APC's and IFV's for rapid troop deployment. During peace-time they act as a recruitment centre attempting to attract new people into the defence sector and taking part in military parades, they also take place in providing some minor support against anti-democratic rebels. The K2 tank is used together with IFV's to create a trap for fleeing rebels.

The tank is also quite expensive to produce and considering the countries small military budget if they are needed they get produced over several years to cover costs

[RandomGuyNation]

(Image)
RandomGuyNation Military Industries Main Battle Tank-90 (RMI-MBT90), popularly called the "Lancer"
Information is classified by the RGN Ministry of Defense.

[OOC] A Merkava?

Yeah.

[Gutia]

Strv 122 or Leopard 2(s) is the MBT of Gutia.

[Kazomal]

. . .penetrate , oh, an Abrams, from the rear. . .

hehehe

[Yohannes]

This is my first design since i joined NS (so forgive me if there is anything faulty or wrong with it). It consequently as a result become my MBT as well.

Cheers guys.

AY1 'Serenity' Main Battle Tank

Prototype of the AY1 'Serenity' MBT
(click the image for a larger-image version)


AY1 'Serenity' MBT of the K.u.K.6th Armoured Division
(click the image for a larger-image version) / Colouring courtesy of Deus


AY1 'Serenity' MBT of the Incursus Expeditionary Armoured Division
(click the image for a larger-image version)

• Basic information
  • Crew : 4 (commander, driver, gunner, loader)
  • Type : Main battle tank
  • Place of origin : Anagonia-Yohannes
  
  
• Dimensions
  • Length : (including muzzle extending forward) 10.5m
  • Height (maximum) : 2.95m (including roof of the tank's turret)
  • Width (maximum) : 3.9m
  • Weight : 76.1 tonnes. Ground clearance of 50 cm
  
  
• Performance
  • Maximum (Governed) Speed 61 kph
  • Cross Country Speed : 47 kmph
  • Speed, 10% Slope : 21 kph
  • Speed, 60% slope : 10 kph
  • Acceleration (0 to 32 km/h (20 mil/h) : 4.7 seconds
  • Range : 476 km
  • Operational Cruising Speed : 410 km
  
  
• Manoeuvrability
  • Trench Crossing : 260 cm
  • Vertical Obstacle : 94.2 cm
  • Fording without Preparation : 103 cm
  • Fording with Preparation : 171.7 cm
  • Deep Fording : Not capable of
  • Hydropneumatic Suspension System
  
  
• Armament
  • Primary : AY1M 140mm 48 calibre smoothbore ETC gun
    Ammunition : 40 (APFSDS, ATGW, and HEAT)
    Traversing : 360 º
    Elevation : -10 to 20 º
    Maximum Elevation Slew Rate : 10 to 15 º/s
  • Secondary : 7.62 mm AY02-MG (5,000 rounds) and/or 12.7 mm AY18-MG (600 rounds), 2x4 Smoke Grenade Launchers
  
  
• Power
  • Engine : 2,000 HP MB30 Twin-charged / Super-Turbocharging Series, Dual Fan-assisted Intercoolers inducted 6 Cylinder Horizontally Opposed / 2.4 L per 1km average of fuel consumption
  • Transmission : AYMB AHE30 8 forward / 4 reverse 1,400 L (fuels) 750 L (water) capacity
  • Power-to-Weight Ratio : 27.51 HP/ton
  
  
• Armour and Protection
  • Armour : Lamonian Adversus Tank Armour
  • Protection : AY09 AFEDSS, AYHK9 ADS, and AY109 NBC/CBRN (NCBS) System of Protection
• Export
  • Domestic Production Right : US$30,000,000,000.00 (thirty billion universal standard dollar)
  • Price (per unit cost) : US$13,800,000.00 (thirteen million and eight hundred universal standard dollar)

---

History

---

The Dual Imperial Monarchy of Anagonia-Yohannes, and consequently its armed defence forces, Kaiserlichen und Königlichen Streitkräfte or literally the Imperial and Royal Armed Defence Forces, has historically since its political unification as a single national entity in 1987 operate both the LY4A1 and LY4A2 as its series of standard main battle tank model. However, through the establishment of an economic co-operation treaty between the stratocratic entity of the Lyran Protectorate and the Empire of Anagonia-Yohannes in 1991, and the mutual defensive treaty with that of the Lamonian Free Republic, the Anago-Yohannesian Imperial and Royal Land Defence Force suddenly found itself lacking upon the existence of an Anago-Yohannesian domestically originated battle system, namely the establishment of an Anago-Yohannesian home production main battle tank being one of the said requirement for military self-sufficiency. Furthermore, with the recent participation of multiple Anago-Yohannesian expeditionary operations abroad, namely that of the Anago-Yohannesian - Tagmatine Colonial War of Aggression and the Osthian-Incursus Conflict, the Anago-Yohannesian Imperial and Royal Chief-of-the-Army General Staff suddenly found the lack of a domestically manufactured main battle tank system originating from within the Anago-Yohannesian Empire, and the visibility upon the Anago-Yohannesian Land Defence Force's reliance towards its allies' manufactured main battle tanks model, to be damaging towards its national prestige following the resolute end of the aforementioned conflicts.

Therefore the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided that the development of a new main battle tank of Anago-Yohannesian main battle tank design to be initiated as one of its primary priorities. Politically Unified as a nation-state only since 1987, the Empire has little if not almost no previous designing experiences regarding the development of a main battle tank model, nevertheless the assistance of the Lamonian Free Republic government substantially provided a crucial catalyst towards the realisation of an Anago-Yohannesian manufactured main battle tank. Furthermore, multiple previous crucial personnel experiences of operating the LY4A2 on the field of battle, the establishment of a Lyran Arms Foreign Production Detachment Programme within the Anago-Yohannesian Empire, and countless initiation upon the domestic production of various Lyran battle systems reinforced the speed of the Anago-Yohannesian main battle tank project in terms of experience and knowledge upon the establishment of an effective domestic main battle tank model. Costing by approximation US$501 million due to the length of its timeline duration, the project was largely finished, and the design confirmed to be effective upon activation within the production line. The contract is designated towards the Vereinigte Waffenindustrie von das Anagonisch-Yohannisches Kaiserreich or known regionally in Europa as VWK, an agglomeration of semi-governmental controlled publicly share-traded and semi-corporational Anago-Yohannesian Arms Manufacturing Industry players within the Dual Imperial Monarchy of Anagonia-Yohannes.

---

Main Armament

---

The designated primary gun of the AY1 Serenity is an AY1M 140mm, 48 calibre (5.76 mm) Electrothermal-chemical (ETC) smoothbore gun, as an attempt by the VMK Bureau of Design Committee to substantially increase accuracy and muzzle energy of the AY1 Serenity, and initiated by improving the predictability and rate of expansion of propellants inside the barrel of the AY1M 140mm gun. However the VMK Bureau of Design Committee realised that the smoothbore 140mm AY1M gun has its own drawback in conjunction with its considerable tactical lethality on the battlefield itself. The size of the projectile involved has a considerable impact upon the quantitative capacity in terms of ammunition amount carried within the AY1 Serenity, which consequentially at the same time lower its durational combat effectiveness in overall.

During the Tagmatium - Anagonia-Yohannes Colonial Conflict of 2007 however, it was shown that the Tagmatine Imperial Army's effort of increasing its main battle tank's primary armament into that of the 140mm main gun system has considerably altered the immediate operational tactical initiative, yet again and again upon multiple occassions, towards the immediate Tagmatine Armoured Division within its scope of immediate tactical operation and the surrounding vicinity of its power projected reach. Whilst the conflict resulted in a cease-fire and a return of de-facto cassus belli, the Anago-Yohannesian Imperial and Royal Land Defence Force has decided that the development of an Anago-Yohannesian 140mm smoothbore gun capable of seizing the immediate tactical initiative towards its associated formational detachment would be one of its top priorities.

---

---

As such the aforementioned issue and after a considerable length of time spent upon debating the feasibility and effectiveness of the said 140mm smoothbore gun, the VMK Bureau of Design Committe, alongside the approval of the Anago-Yohannesian Imperial and Royal Ministry of Defence, has finally decided upon the choosing of the AY1M 140mm smoothbore gun, over that of the previously suggested Low-Recoil AY1A 120 mm gun, as the primary armament of the AY1 Serenity. Hence the establishment of the AY1M 140mm, 48 calibre (5.76 mm) gun as the main armament of the AY1 Serenity.

The 28 rounds of the primary gun's ammunition are stored within an internally-constructed magazine, to the right of the driver's station, and an additional total of 12 rounds are stored within the right side of the turret bustle, furthermore separated mainly by a systemically electrical-operated door. The AY1M 140mm gun uses a variety of rounds, such as that of the Anago-Yohannesian AY-18 APFSDS-T (anti-tank roundarmour-piercing fin-stabilized discarding sabot), AY-33A ATGW (anti-tank guided weapon), and the AY-03A HEAT (high explosive anti-tank) rounds.

The AY1M 140mm 48 calibre electrothermal-chemical smoothbore gun is capable of power elevating from 20 º to -10.

---

Secondary Armament

---

The secondary armament of the AY1 Serenity is the AY02-MG, an Anago-Yohannesian automatic, air-cooled, and belt-fed short recoil general purpose machine gun chambered for the Anago-Yohannesian 7.62x51mm (5,000 rounds).

The AY02-MG's mechanism is that of a roller locked bolt which consists of the bolt head, a pair of rollers, the striker sleeve, bolt body, and the return spring. The process in which the bolt's locking is accomplished securely can be initiated by a particularly distinctive wedge-shaped striker sleve, which will then act upon to force the two cylindrical rollers within the head of the bolt outward, consequentially moving it into the corresponding recesses within the barrel breech extension. Upon the act of firing, both the extension of the barrel and the barrel itself then will recoil towards the rear.

This process results in an impact which consequentially elevate the carrier to the rear, thus withdrawing the wedge and both rollers as they are cammed inward and outward, from their socket, by the fixed cams. This unlock the bolt head within the barrel extension, ensuring a complete locking condition. A spring-loaded casing extractor and ejector can also be found upon within the bolt, and the aforementioned ejection is initiated upon when the ejector strikes the buffer head, consequentially moving it forward through the bar of the ejector. This will hit the ejector pin, which pushes the cartridge's uppermost base, whilst at the same time within the condition of the aforementioned base still being held by the extractor, which consequentially rotate and eject the empty casing downward through the ejection chute.

---

Active Protection System

---

The AYHK9 Active Protection System was developed by VWK AG under the assistance and guidance of the VMK Bureau of Design Committee, a semi-governmental bureacratic advisory board to the VWK AG, a semi-governmental controlled publicly traded company. The immediate aim of the research and task of the VMK Bureau of Design Committe then was the creation of satisfactory if not acceptable level of protection for Anago-Yohannesian armoured fighting vehicles in the face of the ever-growing capacity and power projectile reach of most of the present anti-tank battle systems and threats internationally. It was during the developmental phase of the AY1 Serenity Main Battle Tank concept that the project was declared by the VMK Bureau of Design Committee, in conjunction to that of the Anago-Yohannesian Imperial and Royal Ministry of Defence, to be categorically regarded as a clear project in majority. The establishment of the said protocol was done only however, through numerous successful and favourably effective demonstrations, consequentially in the AYHK9 ADS's capability to neutralise anti-tank guided missiles and rockets, its corresponding acceptable low rate and high safety levels regarding friendly casualty chance and low percentage, and minimal collateral damage, with that of an acceptable rate of residual penetration.

~work in progress~

---

Countermeasures/Electronics/Networking

---

~Work in progress~

---

Adversus Tank Armour

---

During the course of the development of the Adversus Tank Armour which would be used on the A2, different armour concepts came up that could be used for future projects (i.e., Cross-wise oriented NERA panels).

• Exote
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Ti-6Al-4V
• U-3Ti alloy DU mesh
• Ti-6Al-4V
• SiC encased in Ti-6Al-4V
• Ti-6Al-4V
• Chassis
• Anti-spall

Adversus is the latest in the LAIX ARMS line-up of armour solutions for tanks, originating from the Free Republic of Lamoni. During the AY1 Serenity's development programme, the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided, per offer by that of the Lamonian Free Republic, to incorporate the Adversus battle armoured system towards the AY1 'Serenity' main battle tank.

Adversus starts with Exote, which is rated as being effective against small arms armour piercing rounds (including 15 mm armour piercing rounds). The Exote layer is expected to deal with small arms fire and shrapnel from enemy weapons fire. Exote is Titanium Carbide ceramic particles in a metallic matrix. In this case, the metallic matrix is RHA, making it ductile, which greatly improves its multi-hit capabilities while preserving typical ceramic terminal ballistic properties -- high hardness and ablation. Because the ceramic has been suspended in matrix form instead of sintered together, it is cheaper than ceramic tile armor arrays, while providing calculated protection levels equivalent to a 1.77x thickness efficiency, and 2.25x mass efficiency, compared to RHA alone. This process means that Exote is classified as a Metal Matrix Composite, or MMC. Exote-Armour was invented and first manufactured by Exote Ltd., a Finnish corporation.

Upon impact by an armour-piercing round, Exote’s Titanium Carbide particles wear down the round via ablation, until the round is effectively turned into dust. Exote also spreads out the energy of the round, and distributes it over a larger area, thus fully neutralizing impact. The damage area is only 20-30% larger than the caliber of the hit, and the rest of the plate will still remain protective. This makes Exote a multi-hit armour, which provides excellent protection from small arms, with a lighter weight than RHA alone. The Exote is also used to contain the rest of the armour package.

Lamonian innovations in the form of extruded para-organic resilin are also used. Resilin is an elastomeric fibrous compound found within the musculature of insects. To quote Dr Chris Elvin of Australia's Commonwealth Scientific and Industrial Research Organisation;

“Resilin has evolved over hundreds of millions of years in insects into the most efficient elastic protein known...”

---

Resilin shown under UV at 360nm

---

Using genetically modified E.Coli bacteria, the CSIRO team was able to synthetically generate a soluble Resilin protein, based upon the cloning and expression of the first exon of the Drosophila CG15920 gene. By means of a CSIRO-patented process, the resulting resilin rubber was shown to have structurally near-perfect resilience, with a 97 percent post-stress recovery. The next-nearest competitors are synthetic polybutadiene ‘superball’ high resilience rubber (80 per cent) and elastin (90 per cent). The cross-linking process itself is remarkably simple. It needs only three components - the protein, generally lactose, or a near analog, a metal ligand complex, ruthenium in this case, and an electron acceptor. The mixture is then flashed with visible light of 452 nanometers wavelength to form the polymer - within 20 seconds, the proteins will be cross-linked into a matrix with remarkable tensile strength.

Like it's Acerbitas (and Acerbitas-B) cousin, the Resilin used in Adversus is intended, as with NERA generally, to warp, bend or bulge the Aermet 100 plates upon impact. As the plates move, bullets are subjected to transverse and shear forces, diminishing their penetration, and shaped-charge weapons find their plasma jets unable to readily focus on a single area of armor. In the case of segmented projectiles, the transverse forces are less pronounced, compared to unitary variants, but the movement of the plate essentially forces the projectile to penetrate twice, again lowering total impact upon the platform protected.

The Resilin components are layered with Aermet 100 plates. The Aermet plates are angled, as penetrators striking angled plates will bend into the direction the plate is facing. This action on the part of the penetrator serves to significantly reduce the impact of the penetrator itself, as the penetrator expends energy on this bending motion, instead of being allowed to focus all of its kinetic energy on a single spot on the armour.

Aermet 100 alloy features high hardness and strength, coupled with high ductility. Aermet 100 alloy is used for applications requiring high strength, high fracture toughness, high resistance to stress corrosion cracking, and fatigue. Aermet 100 is more difficult to machine than other steels; Aermet being specially graded martensitic steel, and requires the use of carbide tools.

Composite Sandwich Panels are used both to increase the structural integrity of the armour, as well as to catch fragments that are created by enemy fire. The outside of the panels are composed of one centimeter thick plates of Aermet 100 alloy. One such plate is placed on either side of the panel. The interior of each panel consists of a three centimeter thick honeycomb of hexagonal celled, thickness oriented Aermet 100, where each cell of the honeycomb measures six millimeters across. Each hexagonal cell is filled with a mix of sintered Titanium Diboride (TiB2) ceramic tiles, and vinylester resin. This adds additional ceramic protection to the armor.

Ti-6Al-4V is a very popular alloy of Titanium. Designed for high tensile strength applications in the 1000 MPa range, the alloy has previously been used for aerospace, marine, power generation and offshore industries applications. Ti-6Al-4V offers all-round performance for a variety of weight reduction applications. It is used to sandwich the Depleted Uranium mesh, encase the SiC ceramic, and as the majority of the armor after that.

As chemically pure Depleted Uranium is very brittle, and is not as strong as alloys, U-3Ti alloy is used for the DU mesh. This alloy has a density of 18.6 grams per cubic centimeter. The alloy displays higher strength, and less brittleness than chemically pure Depleted Uranium.

---

---

Silicon Carbide encased in Ti-6Al-4V comes after this, with the Titanium alloy being used to encapsulate the SiC ceramic, as well as assist in hydrostatic prestressing, which is known to extend interface defeat. The SiC is isostatically pressed into the heated matrix; which more securely binds the ceramic into place.

Interface Defeat is a phenomenon observed when a hypervelocity penetrator strikes a sufficiently hard ceramic. The penetrator flattens its nose against the ceramic without penetrating into the ceramic for up to several microseconds, with penetrator material flowing laterally across the face of the ceramic until the ceramic starts to crack. As soon as cracks form, the lateral flow stops and penetration resumes. This effect is also called "dwell" in some publications. Silicon Carbide is excellent for producing this effect.

More Ti-6Al-4V is used as the bulk of the armor after the encased SiC, which has a superior mass efficiency relative to RHA, while its thickness efficiency is a bit lower (about 0.9:1).

The chassis is located behind this, with Dyneema being used as a spall liner. In Anago-Yohannesian main battle tanks, the chassis would likely consist of RHA, to replicate that of the Anago-Yohannesian allied main battle tanks, the Lamonian Free Republic's main battle tanks. As Adversus will also be exported on a case-by-case basis, the chassis composition will undoubtedly change for export customers.

Most of the armour is concentrated on the frontal arc, with the sides also being covered, but to a lesser degree. The rear of the tank (like all tanks) is protected by RHA. Where logically applicable, the Anago-Yohannesian monarchy followed the Lyran designed Hauberk ERA in order to increase the protection levels of the tank. This includes use of Hauberk on the tank’s roof, which helps to protect the A2 against top attack munitions.

---

---

'Hauberk' shaped-charged explosive reactive armor is fitted as standard (though can be removed), designed to destroy (or at the very least severely degrade) hostile munitions, be they HE-based or kinetic penetrators. 'Hauberk' is available from the Lyran Protectorate, at no extra cost, and has been designed specifically to take advantage of research into explosive reactive armor carried out at the Lughenti Testing Range, of which the Anago-Yohannesian government has noted most thankfully.

Owing considerably to its 'Rainmaker' ancestor, 'Hauberk' differs from 'Rainmaker' in two ways. The first change is a shift in the formation of the explosively formed penetrators of the defensive system, from directly opposing the projectile (firing along the same axis as the most likely threat at any given armor location) to a slanted system, angling (approximately) 45degrees up. The new system not only leaves 'Hauberk' considerably more compact, but dramatically improves its effectiveness against kinetic munitions of all forms.

The 'Hauberk' HERA system is composed of “bricks” making each “brick” easily replaceable once used and allowing the system to be fitted to AFVs already in service. The “bricks” are lightweight (at around 3kg) and this allows them to be positioned on as many areas of the tank as needs require.

An Aermet 100 Mine Protection Plate has been incorporated onto the underside of the A2, which offers protection from mines, and IEDs. This protection is in addition to the crew seating, and other protection measures. The turret front and sides are fitted with wedge-shaped add-on armor in sections, which can easily be replaced by field workshops if hit or, at a later stage, be replaced by more advanced armour. Aermet 100 alloy provides the outer casing, with a layer of Resilin to work against CE threats. U-3Ti alloy DU spheres encased in an Aermet 100 matrix cause KE rounds to yaw, reducing their penetration. The “wedge” armour is backed by more Aermet 100 alloy plating.


-------

[Minnysota]

Just something I noticed, but why use a loader with 140mm? It would be much better to use an autoloader, as I don't even know if a loader could lift the shell.

[Interstellar America]

Just something I noticed, but why use a loader with 140mm? It would be much better to use an autoloader, as I don't even know if a loader could lift the shell.

Estainia some how lugs 125mm's into his Paladin contraption by hand?

I think it's partial insanity, auto-loader is the way to go but some people dislike them.

[The Soviet Technocracy]

This is my first design since i joined NS (so forgive me if there is anything faulty or wrong with it). It consequently as a result become my MBT as well.

Cheers guys.

AY1 'Serenity' Main Battle Tank

([url=http://img534.imageshack.us/img534/9758/hm1serenitymbtsmallpic.jpg]Image)[/url]
Prototype of the AY1 'Serenity' MBT
(click the image for a larger-image version)

([url=http://img848.imageshack.us/img848/6078/ay1serenembtimage1small.png]Image)[/url]
AY1 'Serenity' MBT of the K.u.K.6th Armoured Division
(click the image for a larger-image version) / Colouring courtesy of Deus

([url=http://img808.imageshack.us/img808/6973/ay1serenembtimage3small.png]Image)[/url]
AY1 'Serenity' MBT of the Incursus Expeditionary Armoured Division
(click the image for a larger-image version)

• Basic information
  • Crew : 4 (commander, driver, gunner, loader)
  • Type : Main battle tank
  • Place of origin : Anagonia-Yohannes
  
  
• Dimensions
  • Length : (including muzzle extending forward) 10.5m
  • Height (maximum) : 2.95m (including roof of the tank's turret)
  • Width (maximum) : 3.9m
  • Weight : 76.1 tonnes. Ground clearance of 50 cm
  
  
• Performance
  • Maximum (Governed) Speed 61 kph
  • Cross Country Speed : 47 kmph
  • Speed, 10% Slope : 21 kph
  • Speed, 60% slope : 10 kph
  • Acceleration (0 to 32 km/h (20 mil/h) : 4.7 seconds
  • Range : 476 km
  • Operational Cruising Speed : 410 km
  
  
• Manoeuvrability
  • Trench Crossing : 260 cm
  • Vertical Obstacle : 94.2 cm
  • Fording without Preparation : 103 cm
  • Fording with Preparation : 171.7 cm
  • Deep Fording : Not capable of
  • Hydropneumatic Suspension System
  
  
• Armament
  • Primary : AY1M 140mm 48 calibre smoothbore ETC gun
    Ammunition : 40 (APFSDS, ATGW, and HEAT)
    Traversing : 360 º
    Elevation : -10 to 20 º
    Maximum Elevation Slew Rate : 10 to 15 º/s
  • Secondary : 7.62 mm AY02-MG (5,000 rounds) and/or 12.7 mm AY18-MG (600 rounds), 2x4 Smoke Grenade Launchers
  
  
• Power
  • Engine : 2,000 HP MB30 Twin-charged / Super-Turbocharging Series, Dual Fan-assisted Intercoolers inducted 6 Cylinder Horizontally Opposed / 2.4 L per 1km average of fuel consumption
  • Transmission : AYMB AHE30 8 forward / 4 reverse 1,400 L (fuels) 750 L (water) capacity
  • Power-to-Weight Ratio : 27.51 HP/ton
  
  
• Armour and Protection
  • Armour : Lamonian Adversus Tank Armour
  • Protection : AY09 AFEDSS, AYHK9 ADS, and AY109 NBC/CBRN (NCBS) System of Protection
• Export
  • Domestic Production Right : US$30,000,000,000.00 (thirty billion universal standard dollar)
  • Price (per unit cost) : US$13,800,000.00 (thirteen million and eight hundred universal standard dollar)

---

History

---

The Dual Imperial Monarchy of Anagonia-Yohannes, and consequently its armed defence forces, Kaiserlichen und Königlichen Streitkräfte or literally the Imperial and Royal Armed Defence Forces, has historically since its political unification as a single national entity in 1987 operate both the LY4A1 and LY4A2 as its series of standard main battle tank model. However, through the establishment of an economic co-operation treaty between the stratocratic entity of the Lyran Protectorate and the Empire of Anagonia-Yohannes in 1991, and the mutual defensive treaty with that of the Lamonian Free Republic, the Anago-Yohannesian Imperial and Royal Land Defence Force suddenly found itself lacking upon the existence of an Anago-Yohannesian domestically originated battle system, namely the establishment of an Anago-Yohannesian home production main battle tank being one of the said requirement for military self-sufficiency. Furthermore, with the recent participation of multiple Anago-Yohannesian expeditionary operations abroad, namely that of the Anago-Yohannesian - Tagmatine Colonial War of Aggression and the Osthian-Incursus Conflict, the Anago-Yohannesian Imperial and Royal Chief-of-the-Army General Staff suddenly found the lack of a domestically manufactured main battle tank system originating from within the Anago-Yohannesian Empire, and the visibility upon the Anago-Yohannesian Land Defence Force's reliance towards its allies' manufactured main battle tanks model, to be damaging towards its national prestige following the resolute end of the aforementioned conflicts.

Therefore the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided that the development of a new main battle tank of Anago-Yohannesian main battle tank design to be initiated as one of its primary priorities. Politically Unified as a nation-state only since 1987, the Empire has little if not almost no previous designing experiences regarding the development of a main battle tank model, nevertheless the assistance of the Lamonian Free Republic government substantially provided a crucial catalyst towards the realisation of an Anago-Yohannesian manufactured main battle tank. Furthermore, multiple previous crucial personnel experiences of operating the LY4A2 on the field of battle, the establishment of a Lyran Arms Foreign Production Detachment Programme within the Anago-Yohannesian Empire, and countless initiation upon the domestic production of various Lyran battle systems reinforced the speed of the Anago-Yohannesian main battle tank project in terms of experience and knowledge upon the establishment of an effective domestic main battle tank model. Costing by approximation US$501 million due to the length of its timeline duration, the project was largely finished, and the design confirmed to be effective upon activation within the production line. The contract is designated towards the Vereinigte Waffenindustrie von das Anagonisch-Yohannisches Kaiserreich or known regionally in Europa as VWK, an agglomeration of semi-governmental controlled publicly share-traded and semi-corporational Anago-Yohannesian Arms Manufacturing Industry players within the Dual Imperial Monarchy of Anagonia-Yohannes.

---

Main Armament

---

The designated primary gun of the AY1 Serenity is an AY1M 140mm, 48 calibre (5.76 mm) Electrothermal-chemical (ETC) smoothbore gun, as an attempt by the VMK Bureau of Design Committee to substantially increase accuracy and muzzle energy of the AY1 Serenity, and initiated by improving the predictability and rate of expansion of propellants inside the barrel of the AY1M 140mm gun. However the VMK Bureau of Design Committee realised that the smoothbore 140mm AY1M gun has its own drawback in conjunction with its considerable tactical lethality on the battlefield itself. The size of the projectile involved has a considerable impact upon the quantitative capacity in terms of ammunition amount carried within the AY1 Serenity, which consequentially at the same time lower its durational combat effectiveness in overall.

During the Tagmatium - Anagonia-Yohannes Colonial Conflict of 2007 however, it was shown that the Tagmatine Imperial Army's effort of increasing its main battle tank's primary armament into that of the 140mm main gun system has considerably altered the immediate operational tactical initiative, yet again and again upon multiple occassions, towards the immediate Tagmatine Armoured Division within its scope of immediate tactical operation and the surrounding vicinity of its power projected reach. Whilst the conflict resulted in a cease-fire and a return of de-facto cassus belli, the Anago-Yohannesian Imperial and Royal Land Defence Force has decided that the development of an Anago-Yohannesian 140mm smoothbore gun capable of seizing the immediate tactical initiative towards its associated formational detachment would be one of its top priorities.

---

(Image)

---

As such the aforementioned issue and after a considerable length of time spent upon debating the feasibility and effectiveness of the said 140mm smoothbore gun, the VMK Bureau of Design Committe, alongside the approval of the Anago-Yohannesian Imperial and Royal Ministry of Defence, has finally decided upon the choosing of the AY1M 140mm smoothbore gun, over that of the previously suggested Low-Recoil AY1A 120 mm gun, as the primary armament of the AY1 Serenity. Hence the establishment of the AY1M 140mm, 48 calibre (5.76 mm) gun as the main armament of the AY1 Serenity.

The 28 rounds of the primary gun's ammunition are stored within an internally-constructed magazine, to the right of the driver's station, and an additional total of 12 rounds are stored within the right side of the turret bustle, furthermore separated mainly by a systemically electrical-operated door. The AY1M 140mm gun uses a variety of rounds, such as that of the Anago-Yohannesian AY-18 APFSDS-T (anti-tank roundarmour-piercing fin-stabilized discarding sabot), AY-33A ATGW (anti-tank guided weapon), and the AY-03A HEAT (high explosive anti-tank) rounds.

The AY1M 140mm 48 calibre electrothermal-chemical smoothbore gun is capable of power elevating from 20 º to -10.

---

Secondary Armament

---

The secondary armament of the AY1 Serenity is the AY02-MG, an Anago-Yohannesian automatic, air-cooled, and belt-fed short recoil general purpose machine gun chambered for the Anago-Yohannesian 7.62x51mm (5,000 rounds).

The AY02-MG's mechanism is that of a roller locked bolt which consists of the bolt head, a pair of rollers, the striker sleeve, bolt body, and the return spring. The process in which the bolt's locking is accomplished securely can be initiated by a particularly distinctive wedge-shaped striker sleve, which will then act upon to force the two cylindrical rollers within the head of the bolt outward, consequentially moving it into the corresponding recesses within the barrel breech extension. Upon the act of firing, both the extension of the barrel and the barrel itself then will recoil towards the rear.

This process results in an impact which consequentially elevate the carrier to the rear, thus withdrawing the wedge and both rollers as they are cammed inward and outward, from their socket, by the fixed cams. This unlock the bolt head within the barrel extension, ensuring a complete locking condition. A spring-loaded casing extractor and ejector can also be found upon within the bolt, and the aforementioned ejection is initiated upon when the ejector strikes the buffer head, consequentially moving it forward through the bar of the ejector. This will hit the ejector pin, which pushes the cartridge's uppermost base, whilst at the same time within the condition of the aforementioned base still being held by the extractor, which consequentially rotate and eject the empty casing downward through the ejection chute.

---

Active Protection System

---

The AYHK9 Active Protection System was developed by VWK AG under the assistance and guidance of the VMK Bureau of Design Committee, a semi-governmental bureacratic advisory board to the VWK AG, a semi-governmental controlled publicly traded company. The immediate aim of the research and task of the VMK Bureau of Design Committe then was the creation of satisfactory if not acceptable level of protection for Anago-Yohannesian armoured fighting vehicles in the face of the ever-growing capacity and power projectile reach of most of the present anti-tank battle systems and threats internationally. It was during the developmental phase of the AY1 Serenity Main Battle Tank concept that the project was declared by the VMK Bureau of Design Committee, in conjunction to that of the Anago-Yohannesian Imperial and Royal Ministry of Defence, to be categorically regarded as a clear project in majority. The establishment of the said protocol was done only however, through numerous successful and favourably effective demonstrations, consequentially in the AYHK9 ADS's capability to neutralise anti-tank guided missiles and rockets, its corresponding acceptable low rate and high safety levels regarding friendly casualty chance and low percentage, and minimal collateral damage, with that of an acceptable rate of residual penetration.

~work in progress~

---

Countermeasures/Electronics/Networking

---

~Work in progress~

---

Adversus Tank Armour

---

During the course of the development of the Adversus Tank Armour which would be used on the A2, different armour concepts came up that could be used for future projects (i.e., Cross-wise oriented NERA panels).

• Exote
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Ti-6Al-4V
• U-3Ti alloy DU mesh
• Ti-6Al-4V
• SiC encased in Ti-6Al-4V
• Ti-6Al-4V
• Chassis
• Anti-spall

Adversus is the latest in the LAIX ARMS line-up of armour solutions for tanks, originating from the Free Republic of Lamoni. During the AY1 Serenity's development programme, the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided, per offer by that of the Lamonian Free Republic, to incorporate the Adversus battle armoured system towards the AY1 'Serenity' main battle tank.

Adversus starts with Exote, which is rated as being effective against small arms armour piercing rounds (including 15 mm armour piercing rounds). The Exote layer is expected to deal with small arms fire and shrapnel from enemy weapons fire. Exote is Titanium Carbide ceramic particles in a metallic matrix. In this case, the metallic matrix is RHA, making it ductile, which greatly improves its multi-hit capabilities while preserving typical ceramic terminal ballistic properties -- high hardness and ablation. Because the ceramic has been suspended in matrix form instead of sintered together, it is cheaper than ceramic tile armor arrays, while providing calculated protection levels equivalent to a 1.77x thickness efficiency, and 2.25x mass efficiency, compared to RHA alone. This process means that Exote is classified as a Metal Matrix Composite, or MMC. Exote-Armour was invented and first manufactured by Exote Ltd., a Finnish corporation.

Upon impact by an armour-piercing round, Exote’s Titanium Carbide particles wear down the round via ablation, until the round is effectively turned into dust. Exote also spreads out the energy of the round, and distributes it over a larger area, thus fully neutralizing impact. The damage area is only 20-30% larger than the caliber of the hit, and the rest of the plate will still remain protective. This makes Exote a multi-hit armour, which provides excellent protection from small arms, with a lighter weight than RHA alone. The Exote is also used to contain the rest of the armour package.

Lamonian innovations in the form of extruded para-organic resilin are also used. Resilin is an elastomeric fibrous compound found within the musculature of insects. To quote Dr Chris Elvin of Australia's Commonwealth Scientific and Industrial Research Organisation;

“Resilin has evolved over hundreds of millions of years in insects into the most efficient elastic protein known...”

---

Resilin shown under UV at 360nm

---

Using genetically modified E.Coli bacteria, the CSIRO team was able to synthetically generate a soluble Resilin protein, based upon the cloning and expression of the first exon of the Drosophila CG15920 gene. By means of a CSIRO-patented process, the resulting resilin rubber was shown to have structurally near-perfect resilience, with a 97 percent post-stress recovery. The next-nearest competitors are synthetic polybutadiene ‘superball’ high resilience rubber (80 per cent) and elastin (90 per cent). The cross-linking process itself is remarkably simple. It needs only three components - the protein, generally lactose, or a near analog, a metal ligand complex, ruthenium in this case, and an electron acceptor. The mixture is then flashed with visible light of 452 nanometers wavelength to form the polymer - within 20 seconds, the proteins will be cross-linked into a matrix with remarkable tensile strength.

Like it's Acerbitas (and Acerbitas-B) cousin, the Resilin used in Adversus is intended, as with NERA generally, to warp, bend or bulge the Aermet 100 plates upon impact. As the plates move, bullets are subjected to transverse and shear forces, diminishing their penetration, and shaped-charge weapons find their plasma jets unable to readily focus on a single area of armor. In the case of segmented projectiles, the transverse forces are less pronounced, compared to unitary variants, but the movement of the plate essentially forces the projectile to penetrate twice, again lowering total impact upon the platform protected.

The Resilin components are layered with Aermet 100 plates. The Aermet plates are angled, as penetrators striking angled plates will bend into the direction the plate is facing. This action on the part of the penetrator serves to significantly reduce the impact of the penetrator itself, as the penetrator expends energy on this bending motion, instead of being allowed to focus all of its kinetic energy on a single spot on the armour.

Aermet 100 alloy features high hardness and strength, coupled with high ductility. Aermet 100 alloy is used for applications requiring high strength, high fracture toughness, high resistance to stress corrosion cracking, and fatigue. Aermet 100 is more difficult to machine than other steels; Aermet being specially graded martensitic steel, and requires the use of carbide tools.

Composite Sandwich Panels are used both to increase the structural integrity of the armour, as well as to catch fragments that are created by enemy fire. The outside of the panels are composed of one centimeter thick plates of Aermet 100 alloy. One such plate is placed on either side of the panel. The interior of each panel consists of a three centimeter thick honeycomb of hexagonal celled, thickness oriented Aermet 100, where each cell of the honeycomb measures six millimeters across. Each hexagonal cell is filled with a mix of sintered Titanium Diboride (TiB2) ceramic tiles, and vinylester resin. This adds additional ceramic protection to the armor.

Ti-6Al-4V is a very popular alloy of Titanium. Designed for high tensile strength applications in the 1000 MPa range, the alloy has previously been used for aerospace, marine, power generation and offshore industries applications. Ti-6Al-4V offers all-round performance for a variety of weight reduction applications. It is used to sandwich the Depleted Uranium mesh, encase the SiC ceramic, and as the majority of the armor after that.

As chemically pure Depleted Uranium is very brittle, and is not as strong as alloys, U-3Ti alloy is used for the DU mesh. This alloy has a density of 18.6 grams per cubic centimeter. The alloy displays higher strength, and less brittleness than chemically pure Depleted Uranium.

---

---

Silicon Carbide encased in Ti-6Al-4V comes after this, with the Titanium alloy being used to encapsulate the SiC ceramic, as well as assist in hydrostatic prestressing, which is known to extend interface defeat. The SiC is isostatically pressed into the heated matrix; which more securely binds the ceramic into place.

Interface Defeat is a phenomenon observed when a hypervelocity penetrator strikes a sufficiently hard ceramic. The penetrator flattens its nose against the ceramic without penetrating into the ceramic for up to several microseconds, with penetrator material flowing laterally across the face of the ceramic until the ceramic starts to crack. As soon as cracks form, the lateral flow stops and penetration resumes. This effect is also called "dwell" in some publications. Silicon Carbide is excellent for producing this effect.

More Ti-6Al-4V is used as the bulk of the armor after the encased SiC, which has a superior mass efficiency relative to RHA, while its thickness efficiency is a bit lower (about 0.9:1).

The chassis is located behind this, with Dyneema being used as a spall liner. In Anago-Yohannesian main battle tanks, the chassis would likely consist of RHA, to replicate that of the Anago-Yohannesian allied main battle tanks, the Lamonian Free Republic's main battle tanks. As Adversus will also be exported on a case-by-case basis, the chassis composition will undoubtedly change for export customers.

Most of the armour is concentrated on the frontal arc, with the sides also being covered, but to a lesser degree. The rear of the tank (like all tanks) is protected by RHA. Where logically applicable, the Anago-Yohannesian monarchy followed the Lyran designed Hauberk ERA in order to increase the protection levels of the tank. This includes use of Hauberk on the tank’s roof, which helps to protect the A2 against top attack munitions.

---

---

'Hauberk' shaped-charged explosive reactive armor is fitted as standard (though can be removed), designed to destroy (or at the very least severely degrade) hostile munitions, be they HE-based or kinetic penetrators. 'Hauberk' is available from the Lyran Protectorate, at no extra cost, and has been designed specifically to take advantage of research into explosive reactive armor carried out at the Lughenti Testing Range, of which the Anago-Yohannesian government has noted most thankfully.

Owing considerably to its 'Rainmaker' ancestor, 'Hauberk' differs from 'Rainmaker' in two ways. The first change is a shift in the formation of the explosively formed penetrators of the defensive system, from directly opposing the projectile (firing along the same axis as the most likely threat at any given armor location) to a slanted system, angling (approximately) 45degrees up. The new system not only leaves 'Hauberk' considerably more compact, but dramatically improves its effectiveness against kinetic munitions of all forms.

The 'Hauberk' HERA system is composed of “bricks” making each “brick” easily replaceable once used and allowing the system to be fitted to AFVs already in service. The “bricks” are lightweight (at around 3kg) and this allows them to be positioned on as many areas of the tank as needs require.

An Aermet 100 Mine Protection Plate has been incorporated onto the underside of the A2, which offers protection from mines, and IEDs. This protection is in addition to the crew seating, and other protection measures. The turret front and sides are fitted with wedge-shaped add-on armor in sections, which can easily be replaced by field workshops if hit or, at a later stage, be replaced by more advanced armour. Aermet 100 alloy provides the outer casing, with a layer of Resilin to work against CE threats. U-3Ti alloy DU spheres encased in an Aermet 100 matrix cause KE rounds to yaw, reducing their penetration. The “wedge” armour is backed by more Aermet 100 alloy plating.


-------

p sure human loader + 140mm = rly bad mojo

because 140mm is so gigantic you practically have to use an autoloader unless you want to go M103 and use two loaders

no reason not to use an autoloader, just no reason not to use bullpups, nowadays

[Rusikstan]

Just something I noticed, but why use a loader with 140mm? It would be much better to use an autoloader, as I don't even know if a loader could lift the shell.

Loaders shouldn't be lifting that, if they can. Way too, long, awkward, and heavy. Autoloader is really needed in such a case. I don't recall if 120 or 125 is the limit for human loaders...

[Yohannes]

This is my first design since i joined NS (so forgive me if there is anything faulty or wrong with it). It consequently as a result become my MBT as well.

Cheers guys.

AY1 'Serenity' Main Battle Tank

([url=http://img534.imageshack.us/img534/9758/hm1serenitymbtsmallpic.jpg]Image)[/url]
Prototype of the AY1 'Serenity' MBT
(click the image for a larger-image version)

([url=http://img848.imageshack.us/img848/6078/ay1serenembtimage1small.png]Image)[/url]
AY1 'Serenity' MBT of the K.u.K.6th Armoured Division
(click the image for a larger-image version) / Colouring courtesy of Deus

([url=http://img808.imageshack.us/img808/6973/ay1serenembtimage3small.png]Image)[/url]
AY1 'Serenity' MBT of the Incursus Expeditionary Armoured Division
(click the image for a larger-image version)

• Basic information
  • Crew : 4 (commander, driver, gunner, loader)
  • Type : Main battle tank
  • Place of origin : Anagonia-Yohannes
  
  
• Dimensions
  • Length : (including muzzle extending forward) 10.5m
  • Height (maximum) : 2.95m (including roof of the tank's turret)
  • Width (maximum) : 3.9m
  • Weight : 76.1 tonnes. Ground clearance of 50 cm
  
  
• Performance
  • Maximum (Governed) Speed 61 kph
  • Cross Country Speed : 47 kmph
  • Speed, 10% Slope : 21 kph
  • Speed, 60% slope : 10 kph
  • Acceleration (0 to 32 km/h (20 mil/h) : 4.7 seconds
  • Range : 476 km
  • Operational Cruising Speed : 410 km
  
  
• Manoeuvrability
  • Trench Crossing : 260 cm
  • Vertical Obstacle : 94.2 cm
  • Fording without Preparation : 103 cm
  • Fording with Preparation : 171.7 cm
  • Deep Fording : Not capable of
  • Hydropneumatic Suspension System
  
  
• Armament
  • Primary : AY1M 140mm 48 calibre smoothbore ETC gun
    Ammunition : 40 (APFSDS, ATGW, and HEAT)
    Traversing : 360 º
    Elevation : -10 to 20 º
    Maximum Elevation Slew Rate : 10 to 15 º/s
  • Secondary : 7.62 mm AY02-MG (5,000 rounds) and/or 12.7 mm AY18-MG (600 rounds), 2x4 Smoke Grenade Launchers
  
  
• Power
  • Engine : 2,000 HP MB30 Twin-charged / Super-Turbocharging Series, Dual Fan-assisted Intercoolers inducted 6 Cylinder Horizontally Opposed / 2.4 L per 1km average of fuel consumption
  • Transmission : AYMB AHE30 8 forward / 4 reverse 1,400 L (fuels) 750 L (water) capacity
  • Power-to-Weight Ratio : 27.51 HP/ton
  
  
• Armour and Protection
  • Armour : Lamonian Adversus Tank Armour
  • Protection : AY09 AFEDSS, AYHK9 ADS, and AY109 NBC/CBRN (NCBS) System of Protection
• Export
  • Domestic Production Right : US$30,000,000,000.00 (thirty billion universal standard dollar)
  • Price (per unit cost) : US$13,800,000.00 (thirteen million and eight hundred universal standard dollar)

---

History

---

The Dual Imperial Monarchy of Anagonia-Yohannes, and consequently its armed defence forces, Kaiserlichen und Königlichen Streitkräfte or literally the Imperial and Royal Armed Defence Forces, has historically since its political unification as a single national entity in 1987 operate both the LY4A1 and LY4A2 as its series of standard main battle tank model. However, through the establishment of an economic co-operation treaty between the stratocratic entity of the Lyran Protectorate and the Empire of Anagonia-Yohannes in 1991, and the mutual defensive treaty with that of the Lamonian Free Republic, the Anago-Yohannesian Imperial and Royal Land Defence Force suddenly found itself lacking upon the existence of an Anago-Yohannesian domestically originated battle system, namely the establishment of an Anago-Yohannesian home production main battle tank being one of the said requirement for military self-sufficiency. Furthermore, with the recent participation of multiple Anago-Yohannesian expeditionary operations abroad, namely that of the Anago-Yohannesian - Tagmatine Colonial War of Aggression and the Osthian-Incursus Conflict, the Anago-Yohannesian Imperial and Royal Chief-of-the-Army General Staff suddenly found the lack of a domestically manufactured main battle tank system originating from within the Anago-Yohannesian Empire, and the visibility upon the Anago-Yohannesian Land Defence Force's reliance towards its allies' manufactured main battle tanks model, to be damaging towards its national prestige following the resolute end of the aforementioned conflicts.

Therefore the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided that the development of a new main battle tank of Anago-Yohannesian main battle tank design to be initiated as one of its primary priorities. Politically Unified as a nation-state only since 1987, the Empire has little if not almost no previous designing experiences regarding the development of a main battle tank model, nevertheless the assistance of the Lamonian Free Republic government substantially provided a crucial catalyst towards the realisation of an Anago-Yohannesian manufactured main battle tank. Furthermore, multiple previous crucial personnel experiences of operating the LY4A2 on the field of battle, the establishment of a Lyran Arms Foreign Production Detachment Programme within the Anago-Yohannesian Empire, and countless initiation upon the domestic production of various Lyran battle systems reinforced the speed of the Anago-Yohannesian main battle tank project in terms of experience and knowledge upon the establishment of an effective domestic main battle tank model. Costing by approximation US$501 million due to the length of its timeline duration, the project was largely finished, and the design confirmed to be effective upon activation within the production line. The contract is designated towards the Vereinigte Waffenindustrie von das Anagonisch-Yohannisches Kaiserreich or known regionally in Europa as VWK, an agglomeration of semi-governmental controlled publicly share-traded and semi-corporational Anago-Yohannesian Arms Manufacturing Industry players within the Dual Imperial Monarchy of Anagonia-Yohannes.

---

Main Armament

---

The designated primary gun of the AY1 Serenity is an AY1M 140mm, 48 calibre (5.76 mm) Electrothermal-chemical (ETC) smoothbore gun, as an attempt by the VMK Bureau of Design Committee to substantially increase accuracy and muzzle energy of the AY1 Serenity, and initiated by improving the predictability and rate of expansion of propellants inside the barrel of the AY1M 140mm gun. However the VMK Bureau of Design Committee realised that the smoothbore 140mm AY1M gun has its own drawback in conjunction with its considerable tactical lethality on the battlefield itself. The size of the projectile involved has a considerable impact upon the quantitative capacity in terms of ammunition amount carried within the AY1 Serenity, which consequentially at the same time lower its durational combat effectiveness in overall.

During the Tagmatium - Anagonia-Yohannes Colonial Conflict of 2007 however, it was shown that the Tagmatine Imperial Army's effort of increasing its main battle tank's primary armament into that of the 140mm main gun system has considerably altered the immediate operational tactical initiative, yet again and again upon multiple occassions, towards the immediate Tagmatine Armoured Division within its scope of immediate tactical operation and the surrounding vicinity of its power projected reach. Whilst the conflict resulted in a cease-fire and a return of de-facto cassus belli, the Anago-Yohannesian Imperial and Royal Land Defence Force has decided that the development of an Anago-Yohannesian 140mm smoothbore gun capable of seizing the immediate tactical initiative towards its associated formational detachment would be one of its top priorities.

---

(Image)

---

As such the aforementioned issue and after a considerable length of time spent upon debating the feasibility and effectiveness of the said 140mm smoothbore gun, the VMK Bureau of Design Committe, alongside the approval of the Anago-Yohannesian Imperial and Royal Ministry of Defence, has finally decided upon the choosing of the AY1M 140mm smoothbore gun, over that of the previously suggested Low-Recoil AY1A 120 mm gun, as the primary armament of the AY1 Serenity. Hence the establishment of the AY1M 140mm, 48 calibre (5.76 mm) gun as the main armament of the AY1 Serenity.

The 28 rounds of the primary gun's ammunition are stored within an internally-constructed magazine, to the right of the driver's station, and an additional total of 12 rounds are stored within the right side of the turret bustle, furthermore separated mainly by a systemically electrical-operated door. The AY1M 140mm gun uses a variety of rounds, such as that of the Anago-Yohannesian AY-18 APFSDS-T (anti-tank roundarmour-piercing fin-stabilized discarding sabot), AY-33A ATGW (anti-tank guided weapon), and the AY-03A HEAT (high explosive anti-tank) rounds.

The AY1M 140mm 48 calibre electrothermal-chemical smoothbore gun is capable of power elevating from 20 º to -10.

---

Secondary Armament

---

The secondary armament of the AY1 Serenity is the AY02-MG, an Anago-Yohannesian automatic, air-cooled, and belt-fed short recoil general purpose machine gun chambered for the Anago-Yohannesian 7.62x51mm (5,000 rounds).

The AY02-MG's mechanism is that of a roller locked bolt which consists of the bolt head, a pair of rollers, the striker sleeve, bolt body, and the return spring. The process in which the bolt's locking is accomplished securely can be initiated by a particularly distinctive wedge-shaped striker sleve, which will then act upon to force the two cylindrical rollers within the head of the bolt outward, consequentially moving it into the corresponding recesses within the barrel breech extension. Upon the act of firing, both the extension of the barrel and the barrel itself then will recoil towards the rear.

This process results in an impact which consequentially elevate the carrier to the rear, thus withdrawing the wedge and both rollers as they are cammed inward and outward, from their socket, by the fixed cams. This unlock the bolt head within the barrel extension, ensuring a complete locking condition. A spring-loaded casing extractor and ejector can also be found upon within the bolt, and the aforementioned ejection is initiated upon when the ejector strikes the buffer head, consequentially moving it forward through the bar of the ejector. This will hit the ejector pin, which pushes the cartridge's uppermost base, whilst at the same time within the condition of the aforementioned base still being held by the extractor, which consequentially rotate and eject the empty casing downward through the ejection chute.

---

Active Protection System

---

The AYHK9 Active Protection System was developed by VWK AG under the assistance and guidance of the VMK Bureau of Design Committee, a semi-governmental bureacratic advisory board to the VWK AG, a semi-governmental controlled publicly traded company. The immediate aim of the research and task of the VMK Bureau of Design Committe then was the creation of satisfactory if not acceptable level of protection for Anago-Yohannesian armoured fighting vehicles in the face of the ever-growing capacity and power projectile reach of most of the present anti-tank battle systems and threats internationally. It was during the developmental phase of the AY1 Serenity Main Battle Tank concept that the project was declared by the VMK Bureau of Design Committee, in conjunction to that of the Anago-Yohannesian Imperial and Royal Ministry of Defence, to be categorically regarded as a clear project in majority. The establishment of the said protocol was done only however, through numerous successful and favourably effective demonstrations, consequentially in the AYHK9 ADS's capability to neutralise anti-tank guided missiles and rockets, its corresponding acceptable low rate and high safety levels regarding friendly casualty chance and low percentage, and minimal collateral damage, with that of an acceptable rate of residual penetration.

~work in progress~

---

Countermeasures/Electronics/Networking

---

~Work in progress~

---

Adversus Tank Armour

---

During the course of the development of the Adversus Tank Armour which would be used on the A2, different armour concepts came up that could be used for future projects (i.e., Cross-wise oriented NERA panels).

• Exote
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Resilin
• Aermet 100
• Composite Sandwich Panel
• Aermet 100
• Ti-6Al-4V
• U-3Ti alloy DU mesh
• Ti-6Al-4V
• SiC encased in Ti-6Al-4V
• Ti-6Al-4V
• Chassis
• Anti-spall

Adversus is the latest in the LAIX ARMS line-up of armour solutions for tanks, originating from the Free Republic of Lamoni. During the AY1 Serenity's development programme, the Anago-Yohannesian Imperial and Royal Ministry of Defence has decided, per offer by that of the Lamonian Free Republic, to incorporate the Adversus battle armoured system towards the AY1 'Serenity' main battle tank.

Adversus starts with Exote, which is rated as being effective against small arms armour piercing rounds (including 15 mm armour piercing rounds). The Exote layer is expected to deal with small arms fire and shrapnel from enemy weapons fire. Exote is Titanium Carbide ceramic particles in a metallic matrix. In this case, the metallic matrix is RHA, making it ductile, which greatly improves its multi-hit capabilities while preserving typical ceramic terminal ballistic properties -- high hardness and ablation. Because the ceramic has been suspended in matrix form instead of sintered together, it is cheaper than ceramic tile armor arrays, while providing calculated protection levels equivalent to a 1.77x thickness efficiency, and 2.25x mass efficiency, compared to RHA alone. This process means that Exote is classified as a Metal Matrix Composite, or MMC. Exote-Armour was invented and first manufactured by Exote Ltd., a Finnish corporation.

Upon impact by an armour-piercing round, Exote’s Titanium Carbide particles wear down the round via ablation, until the round is effectively turned into dust. Exote also spreads out the energy of the round, and distributes it over a larger area, thus fully neutralizing impact. The damage area is only 20-30% larger than the caliber of the hit, and the rest of the plate will still remain protective. This makes Exote a multi-hit armour, which provides excellent protection from small arms, with a lighter weight than RHA alone. The Exote is also used to contain the rest of the armour package.

Lamonian innovations in the form of extruded para-organic resilin are also used. Resilin is an elastomeric fibrous compound found within the musculature of insects. To quote Dr Chris Elvin of Australia's Commonwealth Scientific and Industrial Research Organisation;

---

(Image)
Resilin shown under UV at 360nm

---

Using genetically modified E.Coli bacteria, the CSIRO team was able to synthetically generate a soluble Resilin protein, based upon the cloning and expression of the first exon of the Drosophila CG15920 gene. By means of a CSIRO-patented process, the resulting resilin rubber was shown to have structurally near-perfect resilience, with a 97 percent post-stress recovery. The next-nearest competitors are synthetic polybutadiene ‘superball’ high resilience rubber (80 per cent) and elastin (90 per cent). The cross-linking process itself is remarkably simple. It needs only three components - the protein, generally lactose, or a near analog, a metal ligand complex, ruthenium in this case, and an electron acceptor. The mixture is then flashed with visible light of 452 nanometers wavelength to form the polymer - within 20 seconds, the proteins will be cross-linked into a matrix with remarkable tensile strength.

Like it's Acerbitas (and Acerbitas-B) cousin, the Resilin used in Adversus is intended, as with NERA generally, to warp, bend or bulge the Aermet 100 plates upon impact. As the plates move, bullets are subjected to transverse and shear forces, diminishing their penetration, and shaped-charge weapons find their plasma jets unable to readily focus on a single area of armor. In the case of segmented projectiles, the transverse forces are less pronounced, compared to unitary variants, but the movement of the plate essentially forces the projectile to penetrate twice, again lowering total impact upon the platform protected.

The Resilin components are layered with Aermet 100 plates. The Aermet plates are angled, as penetrators striking angled plates will bend into the direction the plate is facing. This action on the part of the penetrator serves to significantly reduce the impact of the penetrator itself, as the penetrator expends energy on this bending motion, instead of being allowed to focus all of its kinetic energy on a single spot on the armour.

Aermet 100 alloy features high hardness and strength, coupled with high ductility. Aermet 100 alloy is used for applications requiring high strength, high fracture toughness, high resistance to stress corrosion cracking, and fatigue. Aermet 100 is more difficult to machine than other steels; Aermet being specially graded martensitic steel, and requires the use of carbide tools.

Composite Sandwich Panels are used both to increase the structural integrity of the armour, as well as to catch fragments that are created by enemy fire. The outside of the panels are composed of one centimeter thick plates of Aermet 100 alloy. One such plate is placed on either side of the panel. The interior of each panel consists of a three centimeter thick honeycomb of hexagonal celled, thickness oriented Aermet 100, where each cell of the honeycomb measures six millimeters across. Each hexagonal cell is filled with a mix of sintered Titanium Diboride (TiB2) ceramic tiles, and vinylester resin. This adds additional ceramic protection to the armor.

Ti-6Al-4V is a very popular alloy of Titanium. Designed for high tensile strength applications in the 1000 MPa range, the alloy has previously been used for aerospace, marine, power generation and offshore industries applications. Ti-6Al-4V offers all-round performance for a variety of weight reduction applications. It is used to sandwich the Depleted Uranium mesh, encase the SiC ceramic, and as the majority of the armor after that.

As chemically pure Depleted Uranium is very brittle, and is not as strong as alloys, U-3Ti alloy is used for the DU mesh. This alloy has a density of 18.6 grams per cubic centimeter. The alloy displays higher strength, and less brittleness than chemically pure Depleted Uranium.

---

([url=http://img5.imageshack.us/img5/7831/ay1imagesmall3.jpg]Image)[/url]

---

Silicon Carbide encased in Ti-6Al-4V comes after this, with the Titanium alloy being used to encapsulate the SiC ceramic, as well as assist in hydrostatic prestressing, which is known to extend interface defeat. The SiC is isostatically pressed into the heated matrix; which more securely binds the ceramic into place.

Interface Defeat is a phenomenon observed when a hypervelocity penetrator strikes a sufficiently hard ceramic. The penetrator flattens its nose against the ceramic without penetrating into the ceramic for up to several microseconds, with penetrator material flowing laterally across the face of the ceramic until the ceramic starts to crack. As soon as cracks form, the lateral flow stops and penetration resumes. This effect is also called "dwell" in some publications. Silicon Carbide is excellent for producing this effect.

More Ti-6Al-4V is used as the bulk of the armor after the encased SiC, which has a superior mass efficiency relative to RHA, while its thickness efficiency is a bit lower (about 0.9:1).

The chassis is located behind this, with Dyneema being used as a spall liner. In Anago-Yohannesian main battle tanks, the chassis would likely consist of RHA, to replicate that of the Anago-Yohannesian allied main battle tanks, the Lamonian Free Republic's main battle tanks. As Adversus will also be exported on a case-by-case basis, the chassis composition will undoubtedly change for export customers.

Most of the armour is concentrated on the frontal arc, with the sides also being covered, but to a lesser degree. The rear of the tank (like all tanks) is protected by RHA. Where logically applicable, the Anago-Yohannesian monarchy followed the Lyran designed Hauberk ERA in order to increase the protection levels of the tank. This includes use of Hauberk on the tank’s roof, which helps to protect the A2 against top attack munitions.

---

([url=http://img402.imageshack.us/img402/5267/ay1imagesmall1.jpg]Image)[/url]

---

'Hauberk' shaped-charged explosive reactive armor is fitted as standard (though can be removed), designed to destroy (or at the very least severely degrade) hostile munitions, be they HE-based or kinetic penetrators. 'Hauberk' is available from the Lyran Protectorate, at no extra cost, and has been designed specifically to take advantage of research into explosive reactive armor carried out at the Lughenti Testing Range, of which the Anago-Yohannesian government has noted most thankfully.

Owing considerably to its 'Rainmaker' ancestor, 'Hauberk' differs from 'Rainmaker' in two ways. The first change is a shift in the formation of the explosively formed penetrators of the defensive system, from directly opposing the projectile (firing along the same axis as the most likely threat at any given armor location) to a slanted system, angling (approximately) 45degrees up. The new system not only leaves 'Hauberk' considerably more compact, but dramatically improves its effectiveness against kinetic munitions of all forms.

The 'Hauberk' HERA system is composed of “bricks” making each “brick” easily replaceable once used and allowing the system to be fitted to AFVs already in service. The “bricks” are lightweight (at around 3kg) and this allows them to be positioned on as many areas of the tank as needs require.

An Aermet 100 Mine Protection Plate has been incorporated onto the underside of the A2, which offers protection from mines, and IEDs. This protection is in addition to the crew seating, and other protection measures. The turret front and sides are fitted with wedge-shaped add-on armor in sections, which can easily be replaced by field workshops if hit or, at a later stage, be replaced by more advanced armour. Aermet 100 alloy provides the outer casing, with a layer of Resilin to work against CE threats. U-3Ti alloy DU spheres encased in an Aermet 100 matrix cause KE rounds to yaw, reducing their penetration. The “wedge” armour is backed by more Aermet 100 alloy plating.


-------

p sure human loader + 140mm = rly bad mojo

because 140mm is so gigantic you practically have to use an autoloader unless you want to go M103 and use two loaders

no reason not to use an autoloader, just no reason not to use bullpups, nowadays

Ah, what a silly idea indeed. Never thought of the unfeasibility and near impossibility of handling a 140 mm within the confined space of main battle tank's turrent.

Will update and expand the write-up as so good sir, which in itself is not half finished.
Cheers for the assistance mate.

[Senestrum]

It's not impossible, just a pain in the ass. IRL 140mm guns all used two-piece ammo; one part contained the projectile and propellant and was a bit longer than NATO 120mm ammo, with a second somewhat smaller section with even more propellant, the primer, and the case stub. Here's the ammo from the Swiss 140mm gun:



My guess is it's two-part to make it easier to load the autoloader and make in-hull ammo storage easier (the rounds are something like 1.5 meters long when assembled, so it would be rather impossible to move them around in the tank otherwise).

[The Soviet Technocracy]

p sure human loader + 140mm = rly bad mojo

because 140mm is so gigantic you practically have to use an autoloader unless you want to go M103 and use two loaders

no reason not to use an autoloader, just no reason not to use bullpups, nowadays

Ah, what a silly idea indeed. Never thought of the unfeasibility and near impossibility of handling a 140 mm within the confined space of main battle tank's turrent.

Will update and expand the write-up as so good sir, which in itself is not half finished.
Cheers for the assistance mate.

its not near impossible

tis possible

jsut rly fucking hard and you'd be better off going with two loaders if you're going to do it because one is going to get SUPER TIRED after like 10 rounds

[Ioannes Paulus II]

We use the German made Leopard2 tank.

[Scocialist Provinces]

We use two tanks, the T-863(NOT the T-80) and the MA121 AA tank. Th MA121 has a turret that spins 30 per minute with a 3 inch AA gun that is also useful against infantry, light vehicles and other tanks. It has upgraded armor so a one on one with a heavy tank would most likely be a good outcome for us. Speaking of heavy tanks, our T-863 is a heavy tank with a 9 inch battle cannon that has 400 yards of range. With a 80 cal mounted on the top, infantry dont have time to run. It looks close to this:

[Australien]

We use two tanks, the T-863(NOT the T-80) and the MA121 AA tank. Th MA121 has a turret that spins 30 per minute with a 3 inch AA gun that is also useful against infantry, light vehicles and other tanks. It has upgraded armor so a one on one with a heavy tank would most likely be a good outcome for us. Speaking of heavy tanks, our T-863 is a heavy tank with a 9 inch battle cannon that has 400 yards of range. With a 80 cal mounted on the top, infantry dont have time to run. It looks close to this:
(Image)

Why T-XXX and MA-XXX?
Wouldn't they both be designated with either the T or MA?

[Samozaryadnyastan]

We use two tanks, the T-863(NOT the T-80) and the MA121 AA tank. Th MA121 has a turret that spins 30 per minute with a 3 inch AA gun that is also useful against infantry, light vehicles and other tanks. It has upgraded armor so a one on one with a heavy tank would most likely be a good outcome for us. Speaking of heavy tanks, our T-863 is a heavy tank with a 9 inch battle cannon that has 400 yards of range. With a 80 cal mounted on the top, infantry dont have time to run. It looks close to this:
(Image)

Your armoured vehicles make no sense. You have a 9-inch cannon on a tank with a 400yds range and call it an MBT. Your supposed AA tank fires an anti-tank gun.

Call your AA tank your MBT and mount a bigger gun (the T-90 you linked has a 125mm) and give your current MBT a self-propelled artillery platform and give it a realistic range. AAA guns like a 3-inch gun are useless against aircraft - AA cannons are almost exclusively in the 12.7-40mm bracket and all are automatic fire. One of the most ubiquitous is the ZSU-23-4 Shilka Russian AA tank - 4 guns of 23mm calibre firing at 1000rpm each.

[- Cuba -]

The Main Battle Tank of Cuba's Revolutionary Armed Forces is the T-55AM.

[Inutoland]

We use two tanks, the T-863(NOT the T-80) and the MA121 AA tank. Th MA121 has a turret that spins 30 per minute with a 3 inch AA gun that is also useful against infantry, light vehicles and other tanks. It has upgraded armor so a one on one with a heavy tank would most likely be a good outcome for us. Speaking of heavy tanks, our T-863 is a heavy tank with a 9 inch battle cannon that has 400 yards of range. With a 80 cal mounted on the top, infantry dont have time to run. It looks close to this:
(Image)

Why T-XXX and MA-XXX?
Wouldn't they both be designated with either the T or MA?

Unless he bought them from two different sources. In which case his logistics is going to be a pain in the ass.

[Australien]

Why T-XXX and MA-XXX?
Wouldn't they both be designated with either the T or MA?

Unless he bought them from two different sources. In which case his logistics is going to be a pain in the ass.

I doubt his supplier would forbid him from changing its designation!

[Inutoland]

Unless he bought them from two different sources. In which case his logistics is going to be a pain in the ass.

I doubt his supplier would forbid him from changing its designation!

True. But why bother renaming them?

[Australien]

I doubt his supplier would forbid him from changing its designation!

True. But why bother renaming them?

Because in reality, you wouldn't really have to change anything if you're bringing in a new tank, and it'd just be a little easier for administration.

[Lowell Leber]

We use two tanks, the T-863(NOT the T-80) and the MA121 AA tank. Th MA121 has a turret that spins 30 per minute with a 3 inch AA gun that is also useful against infantry, light vehicles and other tanks. It has upgraded armor so a one on one with a heavy tank would most likely be a good outcome for us. Speaking of heavy tanks, our T-863 is a heavy tank with a 9 inch battle cannon that has 400 yards of range. With a 80 cal mounted on the top, infantry dont have time to run. It looks close to this:
(Image)

Your armoured vehicles make no sense. You have a 9-inch cannon on a tank with a 400yds range and call it an MBT. Your supposed AA tank fires an anti-tank gun.

Call your AA tank your MBT and mount a bigger gun (the T-90 you linked has a 125mm) and give your current MBT a self-propelled artillery platform and give it a realistic range. AAA guns like a 3-inch gun are useless against aircraft - AA cannons are almost exclusively in the 12.7-40mm bracket and all are automatic fire. One of the most ubiquitous is the ZSU-23-4 Shilka Russian AA tank - 4 guns of 23mm calibre firing at 1000rpm each.

Not to mention on that a 9 inch cannon on an MBT is highly impractical. Most RL tanks mount 120mm (4.7inch) guns and NS tanks up to 140-152mm guns (about 5- 6 inches). A 9 inch gun is larger than most fielded self-propelled artillery, and fitting in a practically sized tank turret would be well nigh impossible.

[Samozaryadnyastan]

Your armoured vehicles make no sense. You have a 9-inch cannon on a tank with a 400yds range and call it an MBT. Your supposed AA tank fires an anti-tank gun.

Call your AA tank your MBT and mount a bigger gun (the T-90 you linked has a 125mm) and give your current MBT a self-propelled artillery platform and give it a realistic range. AAA guns like a 3-inch gun are useless against aircraft - AA cannons are almost exclusively in the 12.7-40mm bracket and all are automatic fire. One of the most ubiquitous is the ZSU-23-4 Shilka Russian AA tank - 4 guns of 23mm calibre firing at 1000rpm each.

Not to mention on that a 9 inch cannon on an MBT is highly impractical. Most RL tanks mount 120mm (4.7inch) guns and NS tanks up to 140-152mm guns (about 5- 6 inches). A 9 inch gun is larger than most fielded self-propelled artillery, and fitting in a practically sized tank turret would be well nigh impossible.

That's why I suggested he called it Self-Propelled Artillery.
However - a 9 inch cannon is a 228.6mm gun. I doubt a tank turret even has the room to hold a round of that size.
MBT guns are 55 calibres long, usually. A 55 calibre 9-inch gun would be 12.5m long, probably double the length of the tank.

[Lowell Leber]

Not to mention on that a 9 inch cannon on an MBT is highly impractical. Most RL tanks mount 120mm (4.7inch) guns and NS tanks up to 140-152mm guns (about 5- 6 inches). A 9 inch gun is larger than most fielded self-propelled artillery, and fitting in a practically sized tank turret would be well nigh impossible.

That's why I suggested he called it Self-Propelled Artillery.
However - a 9 inch cannon is a 228.6mm gun. I doubt a tank turret even has the room to hold a round of that size.