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by New Vihenia » Sat Mar 21, 2020 7:16 pm
by Gallia- » Sat Mar 21, 2020 7:18 pm
by United Muscovite Nations » Sat Mar 21, 2020 9:20 pm
by New Vihenia » Sun Mar 22, 2020 12:45 am
by Purpelia » Sun Mar 22, 2020 2:02 am
by Kassaran » Sun Mar 22, 2020 4:01 am
Zarkenis Ultima wrote:Tristan noticed footsteps behind him and looked there, only to see Eric approaching and then pointing his sword at the girl. He just blinked a few times at this before speaking.
"Put that down, Mr. Eric." He said. "She's obviously not a chicken."
by Purpelia » Sun Mar 22, 2020 4:47 am
by Danternoust » Sun Mar 22, 2020 11:17 am
by Scott Bakula From Quantum Leap » Sun Mar 22, 2020 11:54 am
by The Manticoran Empire » Sun Mar 22, 2020 12:22 pm
by Austrasien » Sun Mar 22, 2020 1:26 pm
New Vihenia wrote:I guess even at this time and technology, a Vertical gun that exclusively fire guided munitions are still not wanted ?
by Purpelia » Sun Mar 22, 2020 1:51 pm
Austrasien wrote:Long-range guided gun projectiles don't have any significant advantage over guided missiles except you can fire them from existing cannons.
But a brand new cannon that cannot fire anything else? Why bother? A box of VLS cells is much cheaper.
by Gallia- » Sun Mar 22, 2020 2:27 pm
by Austrasien » Sun Mar 22, 2020 10:15 pm
Purpelia wrote:Don't they have a much smaller initial signature than proper missiles? I mean, theoretically a GLM could turn its engine on many meters away from the launch platform. And presumably the gun flash of a tank, giant as it is is still less than a missile isn't it?
by New Vihenia » Sun Mar 22, 2020 10:32 pm
Austrasien wrote:Long-range guided gun projectiles don't have any significant advantage over guided missiles except you can fire them from existing cannons.
But a brand new cannon that cannot fire anything else? Why bother? A box of VLS cells is much cheaper.
by Gallia- » Sun Mar 22, 2020 11:14 pm
by Shanghai industrial complex » Mon Mar 23, 2020 12:00 am
by New Vihenia » Mon Mar 23, 2020 12:10 am
by Gallia- » Mon Mar 23, 2020 12:14 am
by Shanghai industrial complex » Mon Mar 23, 2020 12:18 am
New Vihenia wrote:Nukes, many of them for deterrence.
by New Vihenia » Mon Mar 23, 2020 12:25 am
Shanghai industrial complex wrote:You'll never press that button unless you find a nuclear bomb heading for you
by Shanghai industrial complex » Mon Mar 23, 2020 12:48 am
by New Vihenia » Mon Mar 23, 2020 7:00 pm
by The Manticoran Empire » Mon Mar 23, 2020 7:15 pm
New Vihenia wrote:So, to justify the cost and reduction of payload of precision munitions like guided shell. There is accuracy argument where the amount of the munitions expended per targets can be reduced. The issue is to put it into some quantities one can see.
One way to address it is by using the SSKP (Single Shot Kill Probability). The equation is basically developed for nuclear exchange but hey.. despite the difference in how it generate explosion, the blast principles remains the same. So in order to calculate the "benefit" of precision munition's accuracy vs how many rounds to be expended.
So here is the bit of a result, could be suitable for well anyone advertising munitions.
So we have long range M549 RAP (Rocket Assisted Projectile) shell, lobbed to 30 Km.. will have CEP of 267 m. It has like 15 Kg of explosive filler. Assuming 5 PSI target hardness which is a typical house and 15 Kg of filler which in turn equivalent to about 19.5 Kg of TNT.
The conventional artillery with that shell have like 0.054% of Single shot kill probability against that target. and to get the amount of rounds required to be expended i divided 100% or 1 with that percentage. So it would be like :
R=1/0.00054
R=1846
So 1846 rounds have to be expended to kill that target.
In the other hand we have precision munition, which half of it are seeker and GPS, the fillings are reduced to mere 3 Kg, of same composition which would mean it would yield about the same as 3.9 Kg of TNT. With 3 m CEP which should be what it's like when it has laser illuminating the target. The SSKP would be 76 %. So at most only 2 rounds need to be expended for every target.
But i wonder if there is a better method.
by Gallia- » Mon Mar 23, 2020 8:15 pm
New Vihenia wrote:So, to justify the cost and reduction of payload of precision munitions like guided shell. There is accuracy argument where the amount of the munitions expended per targets can be reduced. The issue is to put it into some quantities one can see.
One way to address it is by using the SSKP (Single Shot Kill Probability). The equation is basically developed for nuclear exchange but hey.. despite the difference in how it generate explosion, the blast principles remains the same. So in order to calculate the "benefit" of precision munition's accuracy vs how many rounds to be expended.
So here is the bit of a result, could be suitable for well anyone advertising munitions.
So we have long range M549 RAP (Rocket Assisted Projectile) shell, lobbed to 30 Km.. will have CEP of 267 m. It has like 15 Kg of explosive filler. Assuming 5 PSI target hardness which is a typical house and 15 Kg of filler which in turn equivalent to about 19.5 Kg of TNT.
The conventional artillery with that shell have like 0.054% of Single shot kill probability against that target. and to get the amount of rounds required to be expended i divided 100% or 1 with that percentage. So it would be like :
R=1/0.00054
R=1846
So 1846 rounds have to be expended to kill that target.
In the other hand we have precision munition, which half of it are seeker and GPS, the fillings are reduced to mere 3 Kg, of same composition which would mean it would yield about the same as 3.9 Kg of TNT. With 3 m CEP which should be what it's like when it has laser illuminating the target. The SSKP would be 76 %. So at most only 2 rounds need to be expended for every target.
But i wonder if there is a better method.
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