How fast do you have to go to break the sound barrier?
How fast do you have to go to break the sound barrier? The speed at which you break the sound barrier depends on many conditions, including weather and altitude. It's approximately 770 mph or 1,239 kmh at sea level.
Can a 777 go supersonic?
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!
What is fastest thing on earth?
It is light however, at approximately 670 million mph, which takes first place as the fastest thing in the world. Responsible for our sense of sight, light allows us to fully appreciate the world around us – whether we are experiencing life at super speeds or not.
Has a 747 ever broken the sound barrier?
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.
Why is sonic boom illegal?
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.
Can anything fly at Mach 1?
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.
Can a pilot feel a sonic boom?
And the jet pilots don't feel a sonic boom from the cockpit, just as passengers on a boat don't feel the effects of the wake behind them, she added.