您见过大型喷气式飞机起飞吗?引擎轰呜,机身颤动,从尾部喷出灼热强大的气流,速度越来越快,霎时间离开跑道,起落架迅速“收兵回营”,飞机腾空而起,冲入云端,转眼即逝。多么神奇的场景啊! 所谓大型喷气式飞机,不仅体积大而且载重量也大,例如美国的波音747客机,一次的载运量为360吨重;波音757、767和法国产的空中列车载重量比波音747还要大。现代飞机发展的趋势是向大型化、高速化发展。作为飞机的“脚”——起落架也越来越重要,为了保证飞机的绝对安全,起落架必须十分结实可靠,如果 Have you ever seen a large jet taking off? Engine roar, body flutter, powerful hot air from the tail spray, faster and faster, all of a sudden left the runway, the landing gear quickly “close back to the camp,” the aircraft , Rushed into the clouds, an instant fleeting. What a magical scene ah! The so-called large jets, not only bulky and heavy loads, such as the United States Boeing 747 passenger aircraft, a carrier capacity of 360 tons; Boeing 757,767 and French airborne train weight ratio Boeing 747 is bigger. The development trend of modern aircraft is to large-scale, high-speed development. As the aircraft’s “feet” - the landing gear is also more and more important, in order to ensure the absolute safety of the aircraft, landing gear must be very solid and reliable, if