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飞艇飞机——新一代空中飞行器
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《国际航空》 1997年第5期27-27,共1页
这种先进的空中飞行器(AAV)由两个飞艇加一个翼身体组成。它的两个艇身是由凯芙拉复合材料和涂覆雷达吸波材料的多层挤压薄板制成。每个艇身有至少10个独立的充气单元,可容纳3540~14160立方米的氦气。翼身体与常规固定翼飞机一样可做... 这种先进的空中飞行器(AAV)由两个飞艇加一个翼身体组成。它的两个艇身是由凯芙拉复合材料和涂覆雷达吸波材料的多层挤压薄板制成。每个艇身有至少10个独立的充气单元,可容纳3540~14160立方米的氦气。翼身体与常规固定翼飞机一样可做机动飞行,其艇身特有的翼型设计同样也可提供升力,加上氦气能产生浮力,所以它提供的额外升力使AAV能带更多的载重,能在空中悬停,并能以较低的运营费用在空中停留更久。 展开更多
关键词 飞艇飞机 空中飞行器
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To Understand Why Airships Lost the Sky to Airplanes Take a Look at the Network on the Ground
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作者 Helmut E. Braun 《History Research》 2013年第1期23-30,共8页
Zeppelins and airplanes went into a commercial competition during the 1920s and 1930s. The Zeppelin was a very costly and high-scale technology which operated with a number of devices less than fingers a hand has. Air... Zeppelins and airplanes went into a commercial competition during the 1920s and 1930s. The Zeppelin was a very costly and high-scale technology which operated with a number of devices less than fingers a hand has. Airplanes, however, were cheap both in investment and operation and improved their cost-effectiveness rapidly during the times. Therefore, it was clear from an economic point of view to develop a fast growing net of commercial airports serving an even fast growing number of passengers. This was self-energizing. Zeppelins, however, focused on one, later two point-to-point services only, justified by a lack of capital and permanent economic losses. 展开更多
关键词 airplanes innovation diffusion network Zeppelin
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