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fire arrow
Fire arrows are an early form of gunpowder solid fuel rocket which were attached to a shaft of the arrow to provide a propulsive force. The Chinese are credited with both the invention of the fire arrow and also the first use of fire arrows in a military warfare. The Chinese developed fire arrows from their previous invention of fireworks and gunpowder.〔(''Rockets'' (Google eBook), Joseph A. Angelo. Infobase Publishing, 2006 P.1 )〕
== Design ==
The Fire Arrow was the first rocket in mechanism and design.〔(The History of Early Fireworks and Fire Arrows ) — About.com〕 It was made in a variety of forms and launched in diverse manners, but the first design consisted of a pouch of black powder with a stick attached; the arrows were launched from a stand of bamboo sticks. Like the fins on a modern rocket, the long stick on a fire arrow increases stability and therefore accuracy. (It works by causing the center of drag to be far behind the center of mass, so that atmospheric drag keeps the arrow oriented toward its direction of travel.)
Chinese and Korean fire arrows were usually launched in salvoes from launch platforms, such as arrays of cylinders or boxes which could hold as many as 1,000 fire arrows each. The fire arrows propelled by gunpowder may have had a range of up to 1,000 feet.
Fire arrows were tipped with flammable materials like pitch, bitumen, or resin.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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