Hermeus, Venus Aerospace and Space Transportation are all working on commercial aircraft that would carry passengers at more than 4,000 miles per hour.

https://www.hermeus.com/
https://www.venusaero.com/
http://spacetransportation.com.cn/

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00:00 - Introduction
1:04 - What is hypersonic flight?
1:25 - History of hypersonic flight
2:28 - Challenges of hypersonic flight
3:15 - Hypersonic Startup #1: Hermeus
4:58 - Hypersonic Startup #2 - Venus Aerospace
5:58 - Hypersonic Startup #3 - Space Transportation (China)
7:08 - Conclusion

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