https://blog.wongcw.com/2021/02/27/nasa%e5%85%a8%e9%9b%bb%e5%8b%95%e9%a3%9b%e6%a9%9fx-57-maxwell%e5%8d%b3%e5%b0%87%e5%b1%95%e9%96%8b%e4%b8%8b%e4%b8%80%e9%9a%8e%e6%ae%b5%e6%b8%ac%e8%a9%a6/
NASA全電動飛機X-57 Maxwell即將展開下一階段測試