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Christmas Quiz, December 16th (Part 2)


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Republic XF-84H

Some information:

Even in the mid-1950s the superiority of the jet powerplant for combat aircraft was questioned by some. A modern technology propeller driven by a turbine (a turboprop) offered high speeds, long endurance and low landing speeds. To test this concept the USAF commissioned two XF-84Hs from Republic. Powered by the troublesome T-40 turboprop, the noise the F-84H made has been described as an 'unholy shriek', leading to the nickname 'Thunderscreech'. Resonance off the ground made groundcrew physically sick. The two aircraft only made a dozen test flights, all but two of which resulted in emergency landings and the USAF refused to accept it for their own tests, cancelling the programme in 1956. (Source: aviastar.org)

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