The mechanical analysis and the trimming were performed for a novel near spaceaircraft which uses the variation in wind speed at high altitude to control its flight path.
对一种利用高空风的风速差控制飞行轨迹的新型低能耗临近空间飞行器，进行了力学分析与配平计算。
2
Even small aircraft occupy a lot of space.
即便小飞机也占很多空间。
《柯林斯英汉双解大词典》
3
Elon Musk's Space X aims to send an unmanned aircraft to Mars by 2018.