Search results
Results from the WOW.Com Content Network
Long recoil operation is found primarily in shotguns, particularly ones based on John Browning's Auto-5 action. In 1885 a locked breech, long recoil action was patented by the Britons Schlund and Arthur. [9] In a long recoil action, the barrel and bolt remain locked together during recoil, compressing the recoil springs.
In a soft-recoil system, the spring (or air cylinder) that returns the barrel to the forward position starts out in a nearly fully compressed state, then the gun's barrel is released free to fly forward in the moment before firing; the charge is then ignited just as the barrel reaches the fully forward position. Since the barrel is still moving ...
If the shot mass is 10 kg and its velocity is 1000 m/s, the force generated by the shot on the side of the barrel, as it tries to follow this curvature, will be 10,000 N. Figure 10: Typical transverse forces on a shot front band. Thus, transverse forces generated between the shot and the barrel may be very large.
The recoil mechanism was contained in the gun cradle. Despite this effort, nothing followed from it, and it was only with the introduction of the French 75 mm in 1897, that recoil systems started to become normal. The gun's barrel slid back on rollers, pushing a piston into an oil-filled cylinder.
The energy conversion efficiency of a firearm strongly depends on its construction, especially on its caliber and barrel length. However, for illustration, here is the energy balance of a typical small firearm for .300 Hawk ammunition: [1] Barrel friction 2%; Projectile motion 32%; Hot gases 34%; Barrel heat 30%; Unburned propellant 1%.
The usual recoil system in modern quick-firing guns is the hydro-pneumatic recoil system. In this system, the barrel is mounted on rails on which it can recoil to the rear, and the recoil is taken up by a cylinder which is similar in operation to an automotive gas-charged shock absorber, and is commonly visible as a cylinder mounted parallel to ...
In long-recoil actions, such as the Browning Auto-5 shotgun, the barrel and breechblock remain locked for the full recoil travel, and separate on the return; in short-recoil actions, typical of most semiautomatic handguns (e.g. the Colt M1911), the barrel recoils only a short distance before decoupling from the breechblock.
This noise is often called a "ping" or "pop", rather than the expected "bang" of a standard shot. Lighter or nonexistent felt recoil force. Lower force on the projectile, insufficient to clear the barrel, translates to a lower recoil force, which may be completely absorbed by the firearm's recoil mechanisms.