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A blowgun (also called a blowpipe or blow tube) is a simple ranged weapon consisting of a long narrow tube for shooting light projectiles such as darts. It operates by having the projectile placed inside the pipe and using the force created by forced exhalation ("blow") to pneumatically propel the projectile.
Blowpipe saw use in the Cenepa War of 1995 between Ecuador and Peru, where it was deployed mainly against Peruvian Mil Mi-17 and Mil Mi-18 helicopters. [18] Although there are claims of some success, none of these have been verified. [2] From the side, the difference in tube diameter at the front and rear is obvious.
The term blowpipe is also used to refer to the pipe used to blow deliver air to the tuyeres of a forge or blast furnace. [3] The blowpipe of a forge may be considered to be a large bellows operated version of a mouth-blown blowpipe, directing air through a coal or charcoal flame.
For air with a heat capacity ratio =, then =; other gases have in the range 1.09 (e.g. butane) to 1.67 (monatomic gases), so the critical pressure ratio varies in the range < / <, which means that, depending on the gas, choked flow usually occurs when the downstream static pressure drops to below 0.487 to 0.587 times the absolute pressure in ...
Thermal barrier coating (colored white) on a turbine guide vane in a V2500 turbofan engine. Thermal barrier coatings (TBCs) are advanced materials systems usually applied to metallic surfaces on parts operating at elevated temperatures, such as gas turbine combustors and turbines, and in automotive exhaust heat management.
A tuyere or tuyère (French pronunciation:; English: / t w iː ˈ j ɛər /) [1] [2] is a tube, nozzle or pipe allowing the blowing of air into a furnace or hearth. [3] Air or oxygen is injected into a hearth under pressure from bellows or a blowing engine or other devices.
Blowpipe may refer to: Blowpipe (missile), a man-portable surface-to-air missile; Blowgun (also called a blowpipe or blow tube) is a simple weapon in which a missile, such as a dart, is blown through a pipe; Blowpipe (tool), used to direct streams of gases into any of several working media; Blowpipe (Transformers), several Transformers characters
A stage in the manufacture of a Bristol blue glass ship's decanter.The blowpipe is being held in the glassblower's left hand. The glass is glowing yellow. As a novel glass forming technique created in the middle of the 1st century BC, glassblowing exploited a working property of glass that was previously unknown to glassworkers; inflation, which is the expansion of a molten blob of glass by ...