F-84
Page 3
NATO received 1,305 F-84F fighter-bombers to replace the F-84Gs, beginning in June 1955 with 180 for six Dutch squadrons, 197 for Belgium’s two Wings, 328 for five French Escadres, and 150 for Italy’s three Aerbrigata. The Thunderstreak was the first combat type to go to the revived German Air Force which, beginning in November 1956, received 450 F-84Fs.
The French Thunderstreaks were the only ones to enter combat, during the Suez Crisis. Escadres based in Cyprus and Israel successfully attacked the Egyptian Air Force on the ground in November, 1956. Greece and Turkey each were supplied two wings from former German and Dutch aircraft. Republic Thunderjets served NATO until Belgium retired its last F-84F in May 1972.
Thunderflash
Republic proposed a reconnaissance version on August 15, 1949, a contract was made on June 12, 1951, and a YRF-84F flown in February 1952 had twin wing root intakes and a solid cover on the nose, resulting in a small thrust loss, but making space for cameras. While the old sliding canopy remained on that aircraft, production
RF-84Fs used standard hinged covers and J65-W-3 engines on the first 11, J65-W-7s on the rest.
The first RF-84F Thunderflash flew September 9, 1953. Up to 15 cameras could be placed in the nose, with four .50-caliber guns in the lower lips of each intake and two 450-gallon drop tanks or bombs. Dual fences on each wing were added later.
Many F-84F problems also delayed RF-84F squadron service until March 1954, and further production was halted until November 1955. Four USAF reconnaissance wings used the RF-84F. Of 715 Thunderflashes built by Republic by January 1958, 327 were built new for MDAP, plus 134 used USAF RF-84Fs also exported for MAP.
Nine NATO countries with RF-84 squadrons included Belgium, Denmark, France, Greece, the Netherlands, Norway, and Turkey. Germany had 108 RF-84Fs and Italy 78. Nationalist China also acquired 20 new RF-84Fs in February 1956, plus five used USAF examples in 1958, and flew them over the mainland.
The FICON (Fighter CONveyor) project was an effort to extend the range of fighter and reconnaissance jets by teaming F-84s with giant B-36s. Chapter 26 mentioned the 1953 tests of an F-84E and the YF-84F with the GRB-36F. Hoping to add 2,000 miles to the jet’s radius of action, 25 RF-84F-17s were redesignated RF-84K and completed with a retractable hook ahead of the cockpit and down turned horizontal tail fins. Equipping the 91st Strategic Reconnaissance Squadron in July 1955, they operated with SAC’s GRB-36Ds until the last launch on May 22, 1957.
Designed to explore the possibilities of a turbo-prop strike fighter, the XF-84H had an Allison XT-40-A-l with 5,332 hp for its three-bladed Aeroproducts propeller, plus added jet thrust, an anti-torque fin behind the cockpit, and a high Tee tail. Design armament included a single .60-caliber T-45 gun with 1,200 rounds and 4,000 pounds of bombs.
The mockup inspection was in May 1952 and a contract for two prototypes was approved December 18, 1952. Only eight flights with the first prototype, and four flights with the second, were made by company test pilots at Edwards AFB from July 22, 1955, to October 9, 1956; all but one flight ending in emergency landings after engine problems.
The project was a failure, and was never flown by an Air Force pilot. One of the noisiest aircraft ever heard, it never flew more than some 520 mph of the 670-mph design speed. Originally, the Navy had been interested in the project, but development of steam catapults, angled deck and air refueling made propeller-driven substitutes for
jet fighters unnecessary. As the Navy lost interest and mechanical difficulties persisted, the project was abandoned.
Two F-84F-25s were completed with the 8,920-pound General Electric YJ73-GE-7 in a deeper fuselage and designated YF-84J. First flown May 7, 1954, the type wasn’t accepted for production. The YF-84J reached Mach 1.09, but the Air Force rejected the expense involved in changing engines on the production line and canceled the second example in June and the whole F-84J program on August 31.
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