X-33 VentureStar SSTO

The X33 test aircraft is one of the bidding options proposed by NASA for a new generation of transportation system after the Space Shuttle was retired. The original design was hydrogen-oxygen, but in order to adapt it to Titan's login mission, I changed its original hydrogen to liquid oxygen-methane fuel. And the main mission of this spacecraft is manned exploration missions, so there is no huge cargo warehouse. The back of the ship has a retractable docking port that can be docked with the larger spacecraft I released earlier. Note: The RCS engine cannot be used to keep the ship in fixed attitude mode, otherwise the ship RCS will lose control. You must quickly use RCS in time slow mode to point the ship's motion in the direction you want, and then time fast to eliminate the ship's attitude movement. Turn off the RCS engine when you want to correct the ship's attitude. After launching the ship for the first time, the RCS engine must be turned on when saving the game