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Powder in the magazine could be reloaded through a hatch on the underside of the powder carrier if the powder magazine was located under the lock. [ 23 ] [ 1 ] On Kalthoff guns with the magazine in the stock, the magazine was refilled through a hole covered by a sliding lid in the butt-plate, or through a hole uncovered by removing a screw on ...
A black powder substitute is a replacement for black powder (gunpowder), primarily used in muzzleloading firearms. Substitutes may have slightly different properties ...
Even if the barrel was badly fouled, the flintlock user still had to properly seat the round all the way to the breech of the barrel. Leaving an air gap in between the powder and the round (known as "short starting") was very dangerous, and could cause the barrel to explode. Handling loose black powder was also dangerous, for obvious reasons.
In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this ...
Abradable powder coatings provide an economical and environmentally friendly way to improve the efficiency of engines, compressors and pumps by fine-tuning the operational fit of internal components such as pistons, rotors and cases. In typical turbo machinery, the clearance between blade tips and the casing must account for thermal and ...
Delay compositions are used to introduce a delay into the firing train, e.g. to properly sequence firing of fireworks, to delay firing of ejection charges in e.g. model rockets, or to introduce a few seconds of time between triggering a hand grenade and its explosion. Typical delay times range between several milliseconds and several seconds.
This is the main reason why vacuum impregnation is used on any material-die cast, powder metal, plastic, wire harnesses. Vacuum impregnation prevents fluids or gases from leaking by sealing the porosity and leak paths. If the leak paths are not sealed, then fluids or gases may leak from the part.
The 715 shp TPE331-6 used in the Beech King Air B100 have a 400-hr. fuel nozzle cleaning interval, 1,800-hr. hot section inspection interval and a 5,400-hr. time between overhaul; approval is possible for 3,000-hr. HSIs and 6,000-hr. overhauls and engine reserves are cheaper than for the PT6A.