MAKE A MEME View Large Image F9F-7s VF-21 NAN1-54.jpg Four Grumman F9F-7 Cougars of U S Navy fighter squadron VF-21 Mach Busters in 1953 The F9F-7 was identical to the F9F-6 only that Allison J33-A-16 turbojet replaced he Pratt Whitney J48 Contracts were placed for 168 ...
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Keywords: F9F-7s VF-21 NAN1-54.jpg Four Grumman F9F-7 Cougars of U S Navy fighter squadron VF-21 Mach Busters in 1953 The F9F-7 was identical to the F9F-6 only that Allison J33-A-16 turbojet replaced he Pratt Whitney J48 Contracts were placed for 168 F9F-7s However the J33 was less powerful and reliable than the J48 and the last fifty F9F-7s were delivered with J48-engines In service most F9F-7s were re-engined with the J48 U S Navy Naval Aviation News January 1954 http //www history navy mil/nan/backissues/1950s/1954/Jan54 pdf 1953 USN PD-USGov-Military-Navy Grumman F9F Cougar
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