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The X-15 set speed and altitude records in ... The X-15 had an ejection seat designed to operate at speeds up to Mach 4 (4,500 km/h; 2,800 mph) and/or ...
The external tanks were jettisoned 67.4 seconds after launch at a speed of Mach 2.0 and 70,000 feet. The total engine burn time during the flight was 141.4 seconds. After Flight 188, 11 more X-15 flights were made before the program was retired. The X-15 program data was used in the planning of future aircraft and spacecraft designs.
X-15-1 – 56-6670, X-15-2 ... Highest Mach and speed records of program. The X-15A-2's last free flight. Craft retired after setting records. 317 189 3 63 94 3 4 ...
On October 3, 1967, Knight piloted X-15 Flight 188, the program's fastest flight. Flying at a maximum Mach of 6.7 and a maximum speed of 4,520 mph (7,274 km/h), he set a speed record for flight in a winged, powered aircraft. [1] The flight was made in the X-15A-2, the second of three planes in the X-15 fleet.
Land speed records by surface Category Speed (km/h) Speed (mph) Vehicle Operator Date Certifier Refs On ice: 335.7: 208.6: Audi RS 6: Janne Laitinen 9 Mar 2013 FIA [19] On the Moon: 18.0: 11.2: Apollo 17 Lunar Roving Vehicle (LRV‑003) Eugene Cernan: 11 Dec 1972 (unofficial) [20] On Mars: 0.18: 0.11: Mars Exploration Rovers Spirit and Opportunity
In February 1961, White unofficially set a new air speed record when he flew the X-15 at a speed of 2,275 mph (3,661 km/h), following the installation of a 57,000 lbf (250 kN) thrust XLR-99 engine. White was the first human to fly an aircraft at Mach 4 and later Mach 5 over the next eight months.
A new Mach-speed passenger jet would be too expensive and time-intensive. ... Tie said with full capital, meaning billions more dollars, it could take 10-15 years to build, certify, and deliver a ...
The retirement of the X-15 (due to funding cutbacks) after its record-setting Mach 6.70 (4,520 mph) [12] [13] flight prompted pilot Pete Knight to remark that he would have pushed it to even faster speeds if he knew it was the last flight. In his remarks to a number of aviation groups, Crossfield cited the X-15 as one of few aircraft that ...