X-15 | Wikipedia audio article
Channel: wikipedia tts
Date: 04/10/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/North_American_X-15


00:01:33 1 Design and development
00:03:35 1.1 Cockpit and pilot systems
00:07:08 1.2 Propulsion
00:09:15 1.3 Wedge tail and hypersonic stability
00:10:13 2 Operational history
00:16:51 3 Current static displays
00:17:48 3.1 Mockups
00:18:31 3.2 Stratofortress mother ships
00:19:17 4 Record flights
00:19:26 4.1 Highest flights
00:21:04 4.2 Fastest recorded flights
00:21:14 5 Pilots
00:21:34 6 Specifications
00:23:11 7 See also



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Voice name: en-US-Wavenet-E


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SUMMARY
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The North American X-15 was a hypersonic rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15's official world record for the highest speed ever recorded by a manned, powered aircraft, set in October 1967 when William J. Knight flew at Mach 6.70 at 102,100 feet (31,120 m), a speed of 4,520 miles per hour (7,274 km/h; 2,021 m/s), has remained unbroken as of 2019.During the X-15 program, 12 pilots flew a combined 199 flights. Of these, 8 pilots flew a combined 13 flights which met the Air Force spaceflight criterion by exceeding the altitude of 50 miles (80 km), thus qualifying these pilots as being astronauts. The Air Force pilots qualified for military astronaut wings immediately, while the civilian pilots were eventually awarded NASA astronaut wings in 2005, 35 years after the last X-15 flight.