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A flare, also sometimes called a fusée, fusee, or bengala, [1] [2] bengalo [3] in several European countries, is a type of pyrotechnic that produces a bright light or intense heat without an explosion. Flares are used for distress signaling, illumination, or defensive countermeasures in civilian and military applications. Flares may be ground ...
Blue light. Blue light is an archaic signal, the progenitor of modern pyrotechnic flares.Blue light consists of a loose, chemical composition burned in an open, hand-held hemispherical wooden cup, and so is more akin to the flashpan signals of the Admiral Nelson era than the modern, encased signal flares, which are often launched by mortar or rifle and suspended by parachute.
To achieve the red-light emission from the flare, the authors report a formulation mixture of powdered magnesium and hexamine as fuels, nitrocellulose, an epoxy binder system, and lithium-based nitrogen salts as the oxidizer and color agent. When burned, users could observe a cool burning flame emitting a deep red color.
The Gyrojet principle was also examined for use in survival flare guns, and a similar idea was explored for a grenade launcher. The emergency-survival flare version (A/P25S-5A) was used for many years as a standard USAF issue item in survival kits, vests, and for forward operations signaling, with flares available in white, green, blue, and red.
The SAE International Emergency Warning Lights and Devices committee oversees the SAE emergency vehicle lighting practices and the siren practice, J1849. [a] This practice was updated through cooperation between the SAE and the National Institute of Standards and Technology. Though this version remains quite similar to the California Title 13 ...
A flare or decoy flare is an aerial infrared countermeasure used by an aircraft to counter an infrared homing ("heat-seeking") surface-to-air missile or air-to-air missile. Flares are commonly composed of a pyrotechnic composition based on magnesium or another hot-burning metal, with burning temperature equal to or hotter than engine exhaust.
New details about a study that warned against black plastic spatulas and other kitchen tools have come out. (Getty Creative) (Анатолий Тушенцов via Getty Images)
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