What Mach does the SR-71 Fly?


sr-71 has classified top speed, has been known going mach 3.5.

world's fastest manned (rocket) airplane x-15a-2. first flew on 28 june 1964, reaching 7,274 km/h (4,520 mph, or 2,021 m/s), establishing new speed record.

sr-71 still fastest jet, x-15a-2 fastest airplane (rocket airplane) launched b-52 @ 40000 ft.

facts x-15a-2:
joint program nasa, air force, navy, , north american operated remarkable of rocket research aircraft. composed of internal structure of titanium , skin surface of chrome-nickel alloy known inconel x, x-15 had first, unpowered glide flight on june 8, 1959, while first powered flight took place on september 17, 1959. because of large fuel consumption of rocket engine, x-15 air launched b-52 aircraft @ 45,000 ft , speeds upward of 500 mph. airplane first set speed records in mach 4-6 range mach 4.43 on march 7, 1961; mach 5.27 on june 23, 1961; mach 6.04 on november 9, 1961; , mach 6.7 on october 3, 1967. set altitude record of 354,200 feet (67 miles) on august 22, 1963, , provided enormous wealth of data on hypersonic air flow, aerodynamic heating, control , stability @ hypersonic speeds, reaction controls flight above atmosphere, piloting techniques reentry, human factors, , flight instrumentation. highly successful program contributed development of mercury, gemini, , apollo piloted spaceflight programs space shuttle program. program's final flight performed on october 24, 1968.

sorry mess :)

and there faster jet developed or in development?


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