Re:Centrifugal Machine Guns
by notduncansmith on Sunday December 08, 2019 @11:51PM
(#21740472)
It's true that the spin from a centrifugal gun is unlikely to make bullets fly straight, although ironically "impart a bunch of spin on them" is also one of the foremost techniques for making bullets fly straight: https://en.wikipedia.org/wiki/Rifling
> In firearms, rifling refers to the helical groovings that are machined into the internal (bore) surface of a gun's barrel, for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting. This spin serves to gyroscopically stabilize the projectile by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs.
Re:Centrifugal Machine Guns
by catalogia on Monday December 09, 2019 @12:21AM
(#21740561)
Relating to spinning spherical projectiles, some airsoft guns impart backspin on the spherical plastic pellets they fire to flatten their trajectory: https://en.wikipedia.org/wiki/Hop-up_(airsoft)
> In firearms, rifling refers to the helical groovings that are machined into the internal (bore) surface of a gun's barrel, for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting. This spin serves to gyroscopically stabilize the projectile by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs.