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Cast bullets as cast (left), with gas check (center) and lubricated (right). A gas check is a gasket type component of firearms ammunition. Gas checks are used when non-jacketed bullets are used in high pressure cartridges. The use of a gas check inhibits the buildup of lead in the barrel and improves accuracy. [1]
For hoses and piping, a quick connect fitting, also called a push fitting, is a coupling used to provide a fast, make-or-break connection of gas or liquid transfer lines. Operated by hand, quick connect fittings replace threaded or flanged connections , which require wrenches.
Gas-checks [1] were attachments to ammunition that revolutionised the performance of RML heavy guns. [2] The first generation of RML heavy guns began entering service in about 1865. They all had Woolwich rifling [3] and relied on studs on the projectiles for rotation. Gas-checks were first introduced in 1878 or soon after.
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An attached gas-check was a copper plate that was physically attached to the base of a studded projectile of rifled muzzle-loading ("RML") artillery, ...
Drafting or slipstreaming is an aerodynamic technique where two moving objects are aligning in a close group to exploit the lead object's slipstream and thus reduce the overall effect of drag. Especially when high speeds are involved, as in motor racing and cycling, drafting can significantly reduce the paceline 's average energy expenditure ...
Turbine gas meters infer gas volume by determining the speed of the gas moving through the meter. Because the volume of gas is inferred from the flow, it is important that flow conditions are good. A small internal turbine measures the speed of the gas, which is transmitted mechanically to a mechanical or electronic counter.
The AMC "cruise command" unit was actuated through a push-button on the dashboard once the car's desired speed was reached. The throttle position was automatically adjusted by a vacuum control that opened and closed the throttle based on input from the speedometer cable rather than through an adjustable control on the dashboard.