Re: Smoke Gun in Panther
Posted: Wed Feb 06, 2013 8:38 pm
Hi Colin,
Do you think that the lack of a projectile significantly reduced the recoil forces? I recall the JP had special clearence to us a black powder charge, rather than cordite. More smoke and less energy.
Peirluigi,
I completely accept that Newton's Laws apply, and that the recoil energy starts to develop from the moment of ignition. However due to the massive imbalance between the weight of the projectile, accelerated by the expanding gases, and the inertia of the gun tube and moving parts of the recoil mechanism, it appears that the recoil has barely begun before the projectile leaves the barrel and the muzzle blast expands (the muzzle brake further slowing the the recoil in the Panther). The greatest part of the recoil travel occurs after the projectile has left the barrel.
This clip is very informative in comparing the inertia between different barrel sizes. The lighter BMP cannon barrel, not surprisingly, demonstrates far greater recoil travel before the projectile exits, compared to the T90.
http://www.liveleak.com/view?i=217_1359726425
All very arcane stuff! Good to know that these settings can be adjusted to please everyone. We are just creating an illusion after all!
Looking forward to seein some pics of prototype of this exciting development.
cheers, Fabrice
Do you think that the lack of a projectile significantly reduced the recoil forces? I recall the JP had special clearence to us a black powder charge, rather than cordite. More smoke and less energy.
Peirluigi,
I completely accept that Newton's Laws apply, and that the recoil energy starts to develop from the moment of ignition. However due to the massive imbalance between the weight of the projectile, accelerated by the expanding gases, and the inertia of the gun tube and moving parts of the recoil mechanism, it appears that the recoil has barely begun before the projectile leaves the barrel and the muzzle blast expands (the muzzle brake further slowing the the recoil in the Panther). The greatest part of the recoil travel occurs after the projectile has left the barrel.
This clip is very informative in comparing the inertia between different barrel sizes. The lighter BMP cannon barrel, not surprisingly, demonstrates far greater recoil travel before the projectile exits, compared to the T90.
http://www.liveleak.com/view?i=217_1359726425
All very arcane stuff! Good to know that these settings can be adjusted to please everyone. We are just creating an illusion after all!
Looking forward to seein some pics of prototype of this exciting development.
cheers, Fabrice