Republic XF-84H Thunderscreech - the Supersonic Plane that Made its Pilots Sick

Ground crews dubbed the XF-84H the "Thunderscreech" due to its extreme noise level

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Republic XF-84H Thunderscreech - the Supersonic Plane that Made its Pilots Sick
The experimental Republic XF-84H (s/n 51-17060) in flight in 1955/56. Two F-84Fs were converted into experimental aircraft. Each was fitted with a Allison XT40-A-1 turboprop engine of 5,850 shaft horsepower (4,365 kW) driving a supersonic propeller. Ground crews dubbed the XF-84H the "Thunderscreech" due to its extreme noise level.