军事航空运输具有速度快、航程远、运量大、灵活机动、航线适应性强等特点,是现代高技术战争中最重要的运输方式。美军认为:“空运是美国战时机动性的第一大支柱”、“空运能够确保美国向世界上任何发生危机的地区迅速派出部队对付各种威胁”。军用运输机是实现战略空运的最主要的运输装备,也是实现部队快速机动的重要保障,直接影响着部队的战斗力,因此,外军十分重视发展军用运输机。目前,世界各国均装备有大量性能先进的运输机,并且积极 Military air transport has the characteristics of fast speed, long range, large capacity, flexible maneuverability and strong adaptability to air routes. It is the most important mode of transport in the modern high-tech war. The U.S. military believes that “air transport is the first pillar of wartime mobility in the United States.” “Air transport can ensure that the United States promptly sends troops to deal with all kinds of threats to any crisis-hit areas in the world.” Military transport aircraft are the most important transport equipment for strategic airlift. They are also an important guarantee for rapid troop mobility and directly affect the combat effectiveness of the troops. Therefore, the foreign military attaches great importance to the development of military transport aircraft. At present, all countries in the world are equipped with a large number of advanced transport aircraft and are active