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English: DAYTON, Ohio -- Republic XF-84H in the Research & Development Gallery at the National Museum of the U.S. Air Force. (U.S. Air Force photo)

The sign pictured in the image reads:

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 July 22, 1955 and October 9, 1956, two XF-84H prototypes (S/N 54-17059 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.
Date Taken on 1 July 2011 20:05 (UTC)
Source Source
Author USAF
Permission
(Reusing this file)		 Public domain

Licensing

Public domain
This image or file is a work of a U.S. Air Force Airman or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image or file is in the public domain in the United States.

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  • 2011-07-01 20:05 Bzuk 2802×1868× (363520 bytes) {{Information |Description = DAYTON, Ohio -- Republic XF-84H in the Research & Development Gallery at the National Museum of the U.S. Air Force. (U.S. Air Force photo) |Source = [http://www.nationalmuseum.af.mil/shared/media/photodb/photos/09

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current01:06, 1 January 2012Thumbnail for version as of 01:06, 1 January 20122,802 × 1,868 (355 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|DAYTON, Ohio -- Republic XF-84H in the Research & Development Gallery at the National Museum of the U.S

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