How fast was "Glamorous Glennis"?

gonnzo

‘Glamorous Glennis’, the first plane to break the sound barrier, was named after Chuck Yeager's wife. "The rocket-powered aircraft was launched from the bomb bay of a specially modified B-29 and glided to a landing on a runway. XS-1 flight number 50 is the first one where the X-1 recorded supersonic flight, at Mach 1.06 (361 m/s, 1,299 km/h, 807.2 mph) peak speed; however, Yeager and many other personnel believe Flight #49 (also with Yeager piloting), which reached a top recorded speed of Mach 0.997 (339 m/s, 1,221 km/h), may have, in fact, exceeded Mach 1. (The measurements were not accurate to three significant figures and no sonic boom was recorded for that flight.)... Aircraft #46-062 is currently on display in the Milestones of Flight gallery of the National Air and Space Museum in Washington, DC, alongside the Spirit of St. Louis and SpaceShipOne." http://en.wikipedia.org/wiki/Bell_X-1#X-1A Dec 30 09, 9:36 PM

JaneofGaunt

On 14 October 1947, just under a month after the United States Air Force had been created as a separate service, the tests culminated in the first manned supersonic flight, piloted by Air Force Captain Charles "Chuck" Yeager in aircraft #46-062, which he had christened ‘Glamorous Glennis’, after his wife. The rocket-powered aircraft was launched from the bomb bay of a specially modified B-29 and glided to a landing on a runway. XS-1 flight number 50 is the first one where the X-1 recorded supersonic flight, at Mach 1.06 (361 m/s, 1,299 km/h, 807.2 mph) peak speed; however, Yeager and many other personnel believe Flight #49 (also with Yeager piloting), which reached a top recorded speed of Mach 0.997 (339 m/s, 1,221 km/h), may have, in fact, exceeded Mach 1. (The measurements were not accurate to three significant figures and no sonic boom was recorded for that flight.) http://en.wikipedia.org/wiki/Bell_X-1 Dec 30 09, 9:37 PM

skypilot024

Just before it's last flight in the summer of 1950, Yeager took "Glennis" to Mach 1.45 (957 mph). Source_____"Yeager" an autobiography by General Chuck Yeager and Leo Janos, pg 155. ISBN 0-553-05093-1 Dec 30 09, 9:57 PM