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FISHER P-75

Posted 11/2/2009 Printable Fact Sheet
 
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Fisher XP-75
Fisher XP-75 3/4 front view (S/N 43-46950). (U.S. Air Force photo)
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The Fisher P-75 Eagle was intended to fill the Army Air Forces' 1942 need for an interceptor. Its unique design featured two coaxial contra-rotating propellers connected by dual drive shafts running under the cockpit to a 24-cylinder, liquid-cooled engine located amidships. The original concept called for use of proven airframe components such as P-40 wing panels, A-24 tail, and F4U landing gear--to reduce the design and testing period.

The first of two XP-75s using component parts made its initial flight on Nov. 17, 1943. Flight tests revealed unsatisfactory performance. This, combined with a mission change from interceptor to long-range escort, caused major changes in the original design. Ultimately, the idea of using proven airframe components had to be abandoned. The AAF ordered six XP-75s of the revised configuration along with 2,500 P-75As. The improved version was still unsatisfactory and after three Eagles had crashed, the entire program was canceled on Nov. 8, 1944. Only eight XP-75s and six P-75As were built. 

The museum has a P-75A on display in its Research & Development/Flight Test Gallery.


Type Number built/
converted
Remarks
XP-75-GM 2 Composite design
XP-75-GC 6 Production prototype
P-75A 6 Long-range escort; 2,494 canceled


TECHNICAL NOTES (P-75A):
Armament: 10 .50 cal. machine guns and two 500-lb. bombs
Engine: Allison V-3420 of 2,885 hp
Maximum speed: 404 mph
Cruising speed: 250 mph
Range: 2,600 mi.
Service ceiling: 36,400 ft.
Span: 49 ft. 4 in.
Length: 40 ft. 5 in.
Height: 15 ft. 6 in.
Weight: 19,420 lbs. loaded
Crew: One

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