XP-68 Tornado

Vultee XP-68 Tornado was proposed American high-altitude interceptor aircraft. It was based on the XP-54 Swoose Goose powered by the Wright R-2160 Tornado 42-cylinder radial engine driving a set of contra-rotating propellers. When the engine was canceled, on 22 November 1941, the XP-68 was also canceled.

[edit] References

Andrade, John M. U.S. Military Aircraft Designations and Serials since 1909. Earl Shilton, Leicester, UK: Midland Counties Publications, 1979. ISBN 0-904597-21-0 (Hardcover) * ISBN 0-904597-22-9 (Softcover).
Angelucci, Enzo and Bowers, Peter. The American Fighter, the Definite Guide to American Fighter AIrcraft from 1917 to the Present. New York: Orion Books, 1987. ISBN 0-51756-588-9.
Thompson, Jonathan. Vultee Aircraft 1932-1947. Santa Ana, CA; Narkiewicz/Thompson, 1992. ISBN 0-913322-02-4.
Wagner, Ray. American Combat Planes of the 20th Century: A Comprehensive Reference. Jack Bacon & Co, 2004. ISBN 0-93008-317-2.

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v • d • e USAAS/USAAC/USAAF/USAF fighter designations 1924–1962

Pursuit (pre-1948) Fighter (post-1948)	P-1 • P-2 • P-3 • XP-4 • P-5 • P-6 • XP-7 • XP-8 • XP-9 • XP-10 • P-11 • P-12 • XP-13 • XP-14 • XP-15 • P-16 • XP-17 • XP-18 • XP-19 • YP-20 • XP-21 • XP-22 • XP-23 • YP-24 • Y1P-25 • P-26 • YP-27 • Y1P-28 • P-29 • P-30 • XP-31 • XP-32 • XP-33 • XP-34 • P-35 • P-36 • XP-37 • P-38 • P-39 • P-40 • XP-41 • XP-42 • P-43 • P-44 • XP-45 • XP-46 • P-47 • XP-48 • XP-49 • XP-50 • P-51 • XP-52 • XP-53 • XP-54 • XP-55 • XP-56 • XP-57 • XP-58 • P-59 • YP-60 • P-61 • XP-62 • P-63 • P-64 • XP-65 • P-66 • XP-67 • XP-68 • XP-69 • P-70 • XP-71 • XP-72 • XP-73 • (P-74 not assigned) • P-75 • XP-76 • XP-77 • XP-78 • XP-79 • P-80 • XP-81 • P-82 • XP-83 • P-84 • XP-85 • P-86 • XP-87 • XP-88 • P-89 • XF-90 • XF-91 • XF-92 • YF-93 • F-94 • YF-95 • YF-96 • F-97 • XF-98 • F-99 • F-100 • F-101 • F-102 • XF-103 • F-104 • F-105 • F-106 • F-107 • XF-108 • XF-109 • F-110 • F-111 see also: F-24 (redesignation of A-24 in 1948)

Pursuit, Biplace	PB-1 • PB-2 • XPB-3

Fighter, Multiplace	YFM-1 • XFM-2

See also	Post-1962 list