Books of interest...
- The Curtiss X-Planes: Curtiss Wright's VTOL Effort, 1958-1965
Francis H. Dean
- VTOL: MILITARY RESEARCH AIRCRAFT by Mike Rogers
- UNCONVENTIONAL AIRCRAFT by Peter Bowers
- AIRCRAFT DESIGN: A CONCEPTUAL APPROACH by Daniel P.
Raymer, PhD.
- THE XV-15 TILT ROTOR RESEARCH AIRCRAFT by Martin D. Maisel,
Demo J. Giulianetti, Daniel C. Duga The NASA History Series
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