The ME262 would go into a dive at the speed of sound. The Germans knew this and were developing a swept wing version to fix this.
Also, a successor to the ME262, which was in the early prototype stage, that the US space program people analyzed and determined would have been able to achieve it's designed speed of 1500 mph sometime in 1947.
Our space shuttle was developed from the X-20 Dyna-Soar program which referenced a German orbital bomber design (in early development) with the top stage based on that fighter plane design.
Also, a successor to the ME262, which was in the early prototype stage, that the US space program people analyzed and determined would have been able to achieve it's designed speed of 1500 mph sometime in 1947.
Our space shuttle was developed from the X-20 Dyna-Soar program which referenced a German orbital bomber design (in early development) with the top stage based on that fighter plane design.