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Are you aware that Huntsville Alabama had a huge population of German scientists and engineers producing the equipment that would put an American on the Moon. Goddard did not envision a turbo-pump to force fuel into the rocket motor nor did he ever design a true inertial guidance system for delivering a vehicle to a pre-destined location. The Germans certainly did it many times over. Although the jet engine was ostensibly invented by Whittle in England, Ohaim (sic) in Germany developed the axial turbine at about the same time and because of it made for the practical application of jet propulsion. Whittle's centrifugal design, although functional, was never practical beyond minimal requirements. Although Germans may not have invented the telephone a man from Italy did transmit a radio message. Although a German did not invent the electric lamp, without a vacuum pump obtained from Germany such a lamp could never have been built. One must consider, it is not about national origin, it is about determination and intelligence that forms outcomes.

Whittle's centrifugal design, although functional, was never practical beyond minimal requirements.

The Whittle design was made by General Electric and used in the F-86 in Korea. It was also copied by the Russians and used in the Mig-15 and 19. The axial flow turbojet engine is superior to the centrifugal design, however the metals did not yet exist to accomplish enough shaft RPM to satisfy reliable compressor ratio differentials. The Whittle was more reliable until the little detail of "Flame-out" was resolved by superior US metallurgical technology.