The first F-35B short takeoff/vertical landing stealth fighter operates in vertical-landing mode on a special "hover pit" at Lockheed Martin in Fort Worth, Texas, during an April test.
4月，洛克希德·马丁公司沃斯堡工厂的“悬停坑”对首架短距/垂直起降F-35B隐形战斗机的垂直着陆方式进行测试试验。
It is found that the first vibration mode is vertical by the dynamic analysis and the structural response are in the al...
通过动力分析可以发现，结构的第一振型为竖向振动，动力分析结果也满足抗震要求，说明结构形式是合理可行的。
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