Originally posted by jazz_psyker
Oh what a goody too shoes.....
I agree somewhat, but ummmm chain-guns are cool : )
Anyway, about the weight problem as rounds get fired (due to the fast rate of fire) less will have to be carryed. So one problem solves the
Just to be exact, the term "chaingun" indicates that the weapon is externally driven. It still can have only one barrel. The thread however is about
multibarrel cannons/MGs, which do not necessarily need an external motor.
Of course the more rounds are fired, the lighter the load will be. This is however absolutely theoretical since on a majority of patrols not a single
shot is fired, and even on deployments with enemy contact 99% of the whole time there wont be any shooting. The gunner still has to carry the ammo
Originally posted by Dyno25000
...There are so many eminently intelligent folks in this forum, and I have a lot of respect, but it seems every time I open my mouth around here what
I get is, "that's one dumb idea".
Well, as long as you try to add to the discussion respectfully and with a somewhat backed opinion, noone is justified to attack you. You can however
be disproven, and sadly thats what I´m gonna do
1) The rate of fire of a weapon of this type compared to the weight of ammunition needed for any practical area-suppression mission would
necessarily dictate a cartridge smaller and lighter than 5.56mm, logistics notwithstanding. If this is accepted as a "given", the concept is still
very much viable. I suggest the .22 WMR (magnum rimfire). As a one-shot knockdown cartridge, probably not; as an area suppression round at 3000 rpms,
you bet. Spray at a rate of 3000 rounds per minute of even this small cartridge downrange in a ten-second burst, ...
Problem is: even when we solely look at the issue of area suppression, ROF is not the only important factor. Lets say you we build your .22 WMR
minigun. Trouble is: those small, low-energy bullets have horrible ballistics on larger distances, and even IF you hit, they might not retain enough
energy to even penetrate the target effectively. .22WMR for example has lost half of its velocity on less than 150m. So you cant engage any enemy
farther away, and a disciplined enemy wont be impressed for too long once he realizes that you are basically trying to snipe him with an automatic
Next situation: The enemy is within a reasonable effective range of the .22 minigun. Problem is: he sees you and hides behind some cover, lets say a
hut of sheet steel. How long would you have to shoot at that cover to penetrate? Is it even possible to penetrate normal 4mm steel with a .22WMR, even
at 3000 RPM (eventually, of course)? In that situation you would be more effective with a single, reliable 7.62mm Nato, even a 5.56mm might do the
Two essential situations of infantry combat, and in both situations the .22WMR minigun would fail - all the fancy equipment and compromises to have
the man-portable mingun with 3000RPM would basically turn into an useless letter weight. You cannot replace the effect of one large caliber with 10
small caliber round.
2)...Now, if the weapon could be made blowback- or gas-operated, that's a whole 'nother can of beans. On the other hand, a rotary-barreled
weapon of this smaller caliber would require less battery power, and smaller batteries, than the full-sized 5.56mm. It may be feasible to design a
half-blowback-or-gas, half-electrical drive system to reduce battery power need even further.
Even if we assume that a half electrical - half blowback/gas system would be technically sound and added no weight penalty, it would solve nothing.
The idea behind the electric drive is to have the full energy of the cartridge reliably on target, but increases weight a lot. The idea behind the
gas/blowback operated rotary gun is to get rid of unnecessary secondary systems (the battery and/or motor), to simplify the system and reduce weight -
yet it comes at the penalty of possible failures and that a certain amount of cartridge energy is lost to cycle the system.
So a combination would still leave you with the penaly from the electric motor and
with the reduction of bullet energy. In any case I dont even
know wether a .22WMR could offer enough working pressure to cycle the system.
[edit on 30/3/2006 by Lonestar24]