When post-war budget cuts ended many combat aircraft programs, the overriding importance of one of the most promising of these, known as Secret Project Number MX-809 (MX meaning Material, Experimental) kept it alive.
The MX-809 project was created with hope of fielding a very high speed, high altitude daytime interceptor pursuit airplane capable of "meeting and defeating any strategic bomber aircraft that any potential adversary might produce." In other words, it was to be used for the sole purpose of defending U.S. airspace.
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Anbieter: HPB Inc., Dallas, TX, USA
paperback. Zustand: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! Bestandsnummer des Verkäufers S_480135314
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Booklet. Zustand: Very Good+. First Edition. A crisp clean copy from a maticulous collector. May show price sticker to cover or previous owners name or address stamp to first pages. Otherwise in beautiful condition!rwise in beautiful condition!; Air Force Legends, 210; 8.5 X 0.0625 X 11 inches. Bestandsnummer des Verkäufers 37633
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Stapled wraps. Zustand: Very Good. 1st Edition; 1st Printing. B&W Illustrations; This is an oversized paperback book. The book is in Very Good condition and was issued without a dust jacket. The spine ends and corners of the book covers have some light bumping and wear. Both front and rear covers have some light generalized handling wear. The text pages are clean and bright. "The Republic XF-91 Thunderceptor (originally designated XP-91) is a mixed-propulsion prototype interceptor aircraft, developed by Republic Aviation. The aircraft would use a jet engine for most flight, and a cluster of four small rocket engines for added thrust during climb and interception. The design was largely obsolete by the time it was completed due to the rapidly increasing performance of contemporary jet engines, and only two prototypes were built. One of these was the first American fighter to exceed Mach 1 in level flight. " (from Wikipedia). Bestandsnummer des Verkäufers A52677
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