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Republic XF-84H

Republic XF-84H

The XF-84H, a joint Air Force-Navy project based on the Republic F-84F, was originally designed to combine the speed of jet aircraft with the long range, low fuel consumption and low landing speed of propeller-driven aircraft. The XF-84H used an Allison XF-40-A-1 turboprop engine in a modified F-84 fuselage. Additional changes included a T-type tail and a triangular fin on the top of the fuselage to reduce the high torque produced by the propeller.

Between 22 July 1955 and 9 October 1956, two XF-84H prototypes (S/N 51-17059 and 51-17060) made twelve test flights. Eleven of the twelve flights ended in emergency landings. Sounds produced by the aircraft's turboprop engine caused nausea and headaches among ground crews, earning the XF-84H the unofficial nickname "Thunderscreech." Though the XF-84H was the fastest single-engine propeller driven aircraft ever built, it never approached supersonic speed. Due to poor performance and high maintenance requirements, the XF-84H never became operational.

The aircraft on display (S/N 51-17059) was the first of the two prototypes produced by Republic. it flew eight of the twelve test flights. The museum obtained the aircraft from Kern County, California, in February 1999.

SPECIFICATIONS
Span: 33 ft. 5 in.
Length: 51 ft. 5 in.
Height: 15 ft. 4 in.
Weight: 17,892 lbs.
Armament: None
Engine: Allison XF-40-A-1 turboprop of 5,850 shaft horsepower
Crew: One

PERFORMANCE
Max. speed: 520 mph
Range: beyond 2,000 miles
Service ceiling: above 40,000 ft.

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