What does Werner J, A. Dahm say about the Hyper-X test flight?A.It was unsuccessful becaus
What does Werner J, A. Dahm say about the Hyper-X test flight?
A.It was unsuccessful because it lasted only 11 seconds.
B.It is a very important event in developing very fast airplanes.
C.It allows people to fly at an altitude of 100,000 feet.
D.It can transport cargo quickly and cheaply to outer space.