If I remember correctly, SpaceX reserves 7% of the fuel load for the stage one return mission.
You must mean the (Y)F-23
The best fighter we never bought.
I can hardly wait for the Raptor engine to be ready for flight.
3 times the thrust of the Merlin and only slightly larger.
First test went well.
I wish someone had gone back and had a long look at the F-20 Tigershark, the best fighter we never bought.
It was an evolution of the F-5/T-38 with a single F404-GE-100 turbofan.
You say that Mars is decades away. Elon Musk disagrees.
SpaceX has already successfully tested it's Raptor engine which is the core of his proposed Interplanetary Transport System (ITS)....