All this talk of air-tearing speed and space-brushing altitude might leave you wondering how high or how fast we've already gone. As of November 2012, the X-15 rocket plane holds the world's unofficial speed record, 4,520 mph (7,274 kph, a hypersonic Mach 6.7), and unofficial altitud...
Subsonic wind tunnels test objects with airflows of less than 250mph (402 kph). Transonic tunnels cover tunnels cover a wind speed range of 250mph to 760mph (1,223 kph). Supersonic tunnels generate winds faster than the speed of sound (768mph or 1,235.9 kph). Hypersonic tunnels create ...
The short answer is that it depends on where you are. But in general, it is a speed that exceeds about 1200 km/h or 750 mph. If you’re capable of going this fast, you will be breaking the sound barrier, and people for miles around will be hearing about it! We have written many...
Engines that work this way are called ramjets, and since they need the air to be traveling fast, are really suitable only for supersonic and hypersonic (faster-than-sound) planes. Air moving faster than sound as it enters the engine is compressed and slowed down dramatically, to subsonic ...
Boeing was competing for a supersonic transport contract in 1965, at about the same time the 747 was conceived, and Pan Am founder and chairman Juan Trippe believed that the big subsonic jets would end up as freighters and that the SST would replace the 747 on passenger routes. Trippe was...
The top speed for a 747 is about 570 miles per hour (mph), and this flight topped out at 825 mph.A British Airways plane has broken the record for fastest subsonic flight—by going faster than the speed of sound. The flight from New York to London arrived almost two hours early after...
In 2016, a team of engineers and adventurers will travel to the South African desert and attempt to become the first people to drive a car at 1,000mph. The British-made vehicle, Bloodhound SSC, is designed to smash the current world land-speed record of
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When an aircraft is flying at subsonic speeds, sound waves can easily disperse forward, and everything's chill. Breaking the Sound Barrier Now, think about a boat zooming across the pond so fast that it outruns those water waves, creating a singular, larger wave — a wake. Similarly, ...