Honestly though. I've been keeping silent waiting for some clarity on the nature of this TSTO flight. It's still not clear what kind of TSTO is used.
1. A Rocket 1st stage + Spaceplane 2nd ( China has sent a secret RV earlier)
2. A Rocket with wings piggybacked by a Spaceplane ( Rocket glides down, Spaceplane glides down after doing space/near space things).
[This seems to have happened on July 2021? ]
3. A CC Engine Aircraft piggybacked by a Spaceplane.
4. An aircraft with CC Engines SSTO (The pinnacle).
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