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The Stratolaunch made its second flight on April 29, 2021. [30] Its third flight took place on January 16, 2022, from Mojave Air and Space Port; the flight lasted 4 hours 23 minutes and reached altitude of over 23,490 feet (7,160 m) and top speed of 330 km/h (180 kn). [31] It made its fourth flight on February 24, 2022.
The initial flight occurred on 21 December 2008, after an initial low speed taxi test was carried out at Mojave [12] followed by a high speed taxi on 16 December. [13] By September 2009 the flight envelope was extended to 50000 feet. [14] As of 19 September 2014 the total flight time for WhiteKnightTwo was 333.96 hours.
The Apollo 10 crew (Thomas Stafford, John W. Young and Eugene Cernan) achieved the highest speed relative to Earth ever attained by humans: 39,897 kilometers per hour (11,082 meters per second or 24,791 miles per hour, about 32 times the speed of sound and 0.0037% of the speed of light). [14]
Aircraft cruisers, also known as aviation cruisers, cruiser-carriers, flight deck cruisers, and hybrid battleship-carriers, which combine the characteristics of aircraft carriers and surface warfare ships, because they primarily operated helicopters or floatplanes and did not act as a floating airbase.
While the SS2 achieved a speed of Mach 1.2 (920 mph), [41] this was less than half the 2,000 mph speed predicted by Richard Branson. SpaceShipTwo's second supersonic flight achieved a speed of 1,100 mph for 20 seconds; while this was an improvement, it fell far short of the 2,500 mph for 70 seconds required to carry six passengers into space.
A second United States aircraft carrier, the USS Abraham Lincoln, arrived in the Middle East on Wednesday escorted by guided missile destroyers, the U.S. Central Command said.
Propelled by a General Electric F414 engine, it should reach a maximum speed of Mach 1.5 or 990 mph (1,590 km/h), and cruise at Mach 1.42 or 940 mph (1,510 km/h) at 55,000 ft (16,800 m). [27] The cockpit , ejection seat and canopy come from a Northrop T-38 and the landing gear from an F-16 . [ 6 ]
The second SpaceShipTwo spacecraft, VSS Unity, was unveiled on 19 February 2016. [ 18 ] [ 19 ] The vehicle underwent flight testing 2016–2023. [ 20 ] [ 21 ] [ 22 ] Its first flight to space (above 50 miles altitude) , VSS Unity VP03 , took place on 13 December 2018.