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随着空间技术的发展,近年来,出现了一种将航空航天技术有机地结合在一起的飞行方案,即航空航天飞机,简称空天飞机。它是一种比航天飞机更先进的航天运载工具。 1981年美国首次发射航天飞机成功,从此外辟了太空航线。航天飞机是现代航空、火箭、空间技术三者的综合产物,是具有火箭性能的运载工具,又兼具航空飞机、宇宙飞船、人造卫星主要特点的飞行器。但它的费用高,起飞准备时间长,使用次数有限(可重复使用100—150次),因此限制了它的广泛用途。 与航大飞机相比,空天飞机具有更多的优点。空天飞机不仅推动效率高、耗
With the development of space technology, in recent years, there has been a kind of flight plan that organically combines aeronautical and astronautic technologies, namely the space shuttle, or the space shuttle for short. It is a more advanced space shuttle than a space shuttle. In 1981, the United States successfully launched its space shuttle for the first time. In addition, it opened space flights. The space shuttle is a comprehensive product of modern aviation, rockets and space technology. It is a rocket-capable vehicle that combines the main characteristics of airplanes, spaceships and satellites. However, its high cost, long take-off preparation time and limited number of uses (100-150 reusable applications) limit its wide range of uses. Compared with large aircraft, the space shuttle has more advantages. Space-day aircraft not only promote high efficiency, consumption