本世纪初,在欧欧美大陆上空曾游戈着不少体积庞大的充氢飞船,但是1937年“兴登堡”飞船失事以后,这样的飞船转瞬间就从天空销声匿迹了。近十年来,采用氦气作升浮气体,避免了氢气易爆易燃的致命缺点。这种飞行器的研制又活跃起来了。现代的充氦飞船用坚固的材料制作,舱内装备有各种导航、控制仪器,有的还装备有电子计算 At the beginning of this century, many bulky hydrogen-filled spacecraft were swamped over the European, European and American continents. But after the 1933 “Hindenburg” spacecraft crashed, such a spacecraft suddenly disappeared from the sky. In the past decade, the use of helium as a flotation gas, to avoid the fatal flammable hydrogen flaws. The development of this aircraft was revitalized again. The modern helium-filled spacecraft is made of sturdy materials, equipped with a variety of navigation, control equipment, and some are equipped with electronic computing