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Grumman F11F-1F Super Tiger
The Grumman F11F-1F Super Tiger (company designation G-98J) was a single-seat fighter aircraft originally developed for the United States Navy (USN). Based on the USN's F-11 Tiger, the F11F-1F did not proceed beyond the two F11F-1F prototypes.
==Design and development==
In addition to the F-11A (F11F-1) fighter, Grumman also proposed a more advanced version of the airframe known as the F11F-1F Super Tiger. This was the result of a 1955 study to fit the new General Electric J79 engine into the F-11 airframe. The Navy was sufficiently interested to authorize modification of two production F11F-1s with enlarged air intakes and YJ79-GE-3 turbojets, with the result being designated the F11F-1F, indicating a production F11F-1 with a special engine fit.
The aircraft first flew on 25 May 1956, reaching Mach 1.44 in one of the flights. After the addition of 60° wing root fillets, a 13.5 in (35 cm) fuselage extension, and an uprated J79 engine, the F11F-1F reached an impressive Mach 2.04 in 1957, thus becoming the first naval aircraft in the world to exceed Mach 2 (one year before the F4H, the F8U-3 and the A3J). This was a surprise even to Grumman, which had expected a top speed of only Mach 1.4 at altitude.〔Buttler 2008, pp. 114–115.〕 By comparison, the F11F-1 with the Wright J65 had had difficulty exceeding Mach 1.1. However, the U.S. Navy did not order the Super Tiger into production. Although the service ceiling of the aircraft was nominally 59,000 feet, a test flight on 18 April 1958 at Edwards AFB set a world altitude record of 76,938 feet.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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