Beschreibung : FDC postage stamp X-1 Bell.
The first manned supersonic flight occurred on October 14, 1947, less than a month after the U.S. Air Force had been created as a separate service. Air Force Captain Charles "Chuck" Yeager piloted aircraft #46-062 that he had nicknamed Glamorous Glennis for his wife. The airplane was drop launched from the bomb bay of a modified B-29 Superfortress bomber and reached Mach 1.06 (700 miles per hour (1,100 km/h; 610 kn)). Following burnout of the engine, the plane glided to a landing on the dry lake bed. This was XS-1 flight number 50.

Edwards special post stamp.

USA 2495 - image retouchée ?

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X 1 (XS 1) (ROCKETPLANE) · FIRST SUPERSONIC FLIGHT · 50TH ANNIVERSARY