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The Helikite is a type of kite-balloon or kytoon designed by Sandy Allsopp in the UK in 1993. Allsopps UK Patent No.2280381 and US Patent No.6016998A. The Helikite comprises a combination of a helium balloon and a kite to form a single, aerodynamically sound tethered aircraft, that exploits both wind and helium for its lift. ==Design== The Helikite comprises a semi-rigid helium-filled balloon, having a rigid carbon-fibre spine, with the balloon shaped aerodynamically. The balloon is generally oblate-spheroid in shape although this is not essential. Solid spars provide attachment points for payload equipment. In most winds the aerodynamic lift is greater than the aerostatic lift from the helium. The Helikite design is intended for all-weather, high-altitude operation. The round, stubby shape allows it to be flown in any weather or for altitudes up to 7000 ft. In wind, both the main aerodynamic lift and the aerostatic lift are at the front, while the spar weight and keel are at the stern. Therefore a Helikite remains stable in relatively high winds For operation in extreme conditions, a ballonet may be fitted. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Allsopp Helikite」の詳細全文を読む スポンサード リンク
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