Whats the fastest plane?
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ANSWERS: 7
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Fastest plane with air breathing engines: SR-71 Blackbird.
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Only including air-breathing planes, the X-7 at 2,881 mph (the SR-71 went 2,242 mph). If you include rocket powered planes it's the X-15, which went 4,519 mph. Pictures: (1) X-7. (2) X-15
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Without a doubt interms of air-breathing jet engined planes it is the SR-71 "Blackbird". While techincally not a plane, its interesting to note that a NASA Space Shuttle (which obviously looks like a plane) is capable of speeds of 20,000km/h while in orbit without using its solid rocket engines!
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if you thinking about fastest commercial aircraft currently in service, it's B747 (but due to improve fuel economy current airliners operate below it's max operating speed).
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The fastest civilian aircraft currently in use is the Cessna Citation X, with a cruise speed of Mach 0.92.
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the one you haven't heard about, I've seen it, pulse jet
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Officially... the SR-71 Blackbird is the fastest production aircraft ever made, with a top speed so fast... it's classified. Unfortunately this aircraft is no longer in use by the U.S. Military (there are a couple still being used by NASA), which begs the question... "If they don't have the SR-71 anymore, what did they replace it with?" There's a chance that the US has a new "skunkworks" aircraft that replaced the Blackbird that is so fast, that if they told you about it they'd have to kill you. Hope this helps.
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