Sold by Colophon Book Shop, ABAA, Exeter, NH, U.S.A.
Association Member:
AbeBooks Seller since April 19, 2004
Seller rating 3 out of 5 stars
4 x 6 1/2 inches (approx.) unsealed envelope. The X-24B s design evolved from a family of potential re-entry shapes proposed by the Air Force Flight Dynamics Laboratory, each with higher lift-to-drag ratios. To reduce the costs of constructing a research vehicle, the Air Force returned the X-24A to Martin for modifications that converted its bulbous shape into one resembling a "flying flatiron" a rounded top, flat bottom, and a double-delta planform that ended in a pointed nose. Signed by Crossfield in turquoise ink. A very fine example. 4 x 6 1/2 inches (approx.) unsealed envelope.
Seller Inventory # 33560
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