Stórkostlegar vélar, satt er það.
Eldsneytið er kallað JP-7 ef minnið svíkur ekki.
However, there are a few exceptions to the limitations described above. Probably the most notable of these was the SR-71 Blackbird high-speed reconnaissance plane. The SR-71, which was retired from military service in 1998, cruised at an astonishing Mach 3, or about 2,000 mph (3,220 km/h). On 1 September 1974, a Blackbird set a world speed record from New York to London by flying the 3,470 mile (5,585 km) distance in a remarkable 1 hour and 55 minutes. The return trip, covering over 5,460 miles (8,785 km) from London to Los Angeles, took a mere 3 hours and 48 minutes.
http://www.aerospaceweb.org/question/performance/q0152.shtmlOfficially, the world's fastest jet-powered aircraft remains the SR-71 Blackbird. Although the official record is about Mach 3.3 (or 3.3 times the speed of sound), many believe the aircraft could actually go much faster. However, it seems unlikely that the SR-71 could go much faster than about Mach 3.5, with a very slim chance of Mach 4, due to propulsion and structural limitations. For example, by Mach 3.6 or 3.8, shock waves generated by the nose of the aircraft are formed at an angle such that they impact the engine nacelles and cause the engines to unstart. In addition, heat generated by the aircraft's high speed increases to the point that certain portions of the plane's structure begin to fail by about Mach 3.5.
http://www.aerospaceweb.org/question/performance/q0023.shtml<br><br>Kv. svg
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