Did Concorde break the sound barrier?

At their cruising speeds, the innovative Concordes flew well over the sound barrier at 1,350 miles an hour, cutting air travel time by more than half. The flights were the culmination of a 12-year effort that pitted English and French engineers against their counterparts in the USSR.



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People inside the plane didn't hear a thing. In fact, the transition to supersonic flight was so unimpressive that they decided to install a “mach meter” inside the passenger cabin so that people would know then they passed the speed of sound.

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Aircraft are put through extreme testing during their certification, but such limits are never intended to be actually faced. The 747 -100, for instance, was tested up to Mach 0.99, almost breaking the sound barrier. Other 747s, such as Air Force One, have approached the sound barrier but never crossed it.

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The Concorde's retirement was due to a number of factors. The supersonic aircraft was noisy and extremely expensive to operate, which restricted flight availability. The operating costs required fare pricing that was prohibitively high for many consumers.

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Concorde used the most powerful pure jet engines flying commercially. The Aircraft's four engines took advantage of what is known as 'reheat' technology, adding fuel to the final stage of the engine, which produced the extra power required for take-off and the transition to supersonic flight.

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Fifty years ago, the federal government banned all civilian supersonic flights over land. The rule prohibits non-military aircraft from flying faster than sound so their resulting sonic booms won't startle the public below or concern them about potential property damage.

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Fifty years ago, the federal government banned all civilian supersonic flights over land. The rule prohibits non-military aircraft from flying faster than sound so their resulting sonic booms won't startle the public below or concern them about potential property damage.

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Technical, financial, and regulatory hurdles make a return to the skies extremely unlikely. Concorde is an aircraft that captures the imagination and is instantly recognizable even to non-aviation fanatics.

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Such speed didn't come cheap, though: A transatlantic flight required the high-maintenance aircraft to gulp jet fuel at the rate of one ton per seat, and the average round-trip price was $12,000.

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Concorde is sadly no longer flying, but it is still possible to visit some of the remaining 18 airframes, there are others not open to the public but you can still see them.

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It was expensive to operate. It could Barely make it from Paris to Washington DC without having to declare an emergency due to running low on fuel. It was Not allowed to fly across the USA due to its sonic boom. Other than that, it was good.

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On 25 July 2000, Air France Flight 4590 crashed shortly after take-off with all 109 occupants and four on the ground killed. This was the only fatal incident involving Concorde; commercial service was suspended until November 2001.

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Flight faster than sound was thought to be impossible. In fact, the sound barrier was only an increase in the drag near sonic conditions because of compressibility effects. Because of the high drag associated with compressibility effects, aircraft do not cruise near Mach 1.

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Why does the Boeing 777 sound like a four engine aircraft when it flies over? No, it is not supersonic. The speed of sound (Mach 1) is approximately 767 mph or 661 knots, so the Boeing 777 flying at 660 knots would be subsonic. However, that's still a very impressive speed!

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However, upon the completion of the test, the aircraft entered a shallow dive and started picking up speed, before breaking the sound barrier at approximately 10,000 meters (33,000 feet).

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