https://blog.wongcw.com/2022/12/08/slingshot-aerospace%e7%99%bc%e5%b1%95%e7%a9%ba%e9%96%93%e6%85%8b%e5%8b%a2%e6%84%9f%e7%9f%a5%e5%b9%b3%e5%8f%b0%e8%b7%9f%e8%b8%aa%e5%a4%aa%e7%a9%ba%e4%b8%ad%e7%9a%84%e4%ba%ba%e9%80%a0%e5%a4%a9%e9%ab%94/