一种替代 C-130军用运输机的新型运输机已列入五角大楼计划人员希望开发的项目单上。计划人员希望有一种能在较短跑道上起落的飞机。麦克唐纳尔·道格拉斯为使该愿望成现实,设计了一种重量为125吨的飞机,该机机翼能向上翘起45度,这样飞机只需750英尺长的跑道,即 C-130飞机所需跑道长度的四分之一就能起飞或降落。麦克唐纳尔·道格拉斯设计的机型有四个涡轮螺旋桨发动机,每台涡轮发动机带动一个六叶片的螺旋桨。螺旋桨形成的滑流流过机翼,使飞 A new type of transport aircraft to replace the C-130 military transport aircraft has been included in the list of projects Pentagon plans to develop. Planners want a plane that will take off and land on shorter runways. To make the wish come true, McDonnell Douglas designed a 125-ton aircraft that could be tilted up to 45 degrees so that the aircraft needed only a 750-foot runway, the C-130 One-fourth of the required runway length will take off or land. McDonnell Douglas models are designed with four turboprop engines, each with a six-bladed propeller turbine engine. The slipstream formed by the propeller flows through the wing to make it fly