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!



People Also Ask

Aircraft such as the SR-71 Blackbird are designed to cruise at supersonic speed with afterburners enabled. One of the best known examples of an aircraft capable of supercruise was Concorde.

MORE DETAILS

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.

MORE DETAILS

Current rules prohibit commercial airplanes from flying at supersonic speeds over land because of the noise levels associated with sonic booms and the negative impacts to humans and animals.

MORE DETAILS

Haven't flown those on BA, but the A350 is much quieter than the B777 and would be my choice for that reason alone. You're also likely to have a newer cabin, unless BA refurbished the 777s. Our flight between Denver and Heathrow is on an A350.

MORE DETAILS

Take a look at the size of the engine and the huge bypass fan. It will by size alone subject to more noise than smaller engines. The procedure used on the B-777 engine start that adds to the noise perception is that we start them both simultaneously. The APU is strong enough to easily make the dual start.

MORE DETAILS

The Airbus A380 can reach speeds of more than 1,000 kilometres per hour! Now the Boeing 787 Dreamliner (907 km/h) and Boeing 777 (905 km/h) aren't that fast, but still three times faster than a Formula 1 racing car. See below the speeds of the most common aircraft on Schiphol.

MORE DETAILS

The 777-300 carries 388 passengers with a range up to 5,845 nautical miles (10,820 km). The 777-200ER (Extended Range) carries 314 passengers with a range up to 7,510 nautical miles (13,900 km). To offer airlines additional flexibility in serving nonstop routes, Boeing introduced two new longer range 777 airplanes.

MORE DETAILS

The Boeing 777 is the best-selling long-haul carrier in the history of aviation. It has an exceptional life-span of 30 years, but what's the secret behind this record-breaking longevity? In this film, a 777 is taken apart, inspected, and entirely refurbished.

MORE DETAILS

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.

MORE DETAILS

Aided by a more powerful jet stream than usual, this rapid journey saw the 747 reach a top speed of 825 mph. Photo: Markus Mainka I Shutterstock. Popular Mechanics reports that the reason for it being so powerful on this occasion was a 'bomb cyclone' near Greenland.

MORE DETAILS

However, the 777's primary competitors are the common fuselage A330-A340 series.

MORE DETAILS

The Boeing 777X will also be using the worlds most advanced jet engine, namely the General Electric GE9X. This engine is expected to deliver a 5 per cent increase in efficiency, which will contribute to the lower operating cost.

MORE DETAILS

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.

MORE DETAILS

The fastest fighter jet ever created was the NASA/USAF X-15. It was an experimental aircraft that resembled more of a rocket with wings but managed to reach a record 4,520mph. The fastest fighter jet in the world today is the MiG-25 Foxbat, with a top speed of 2,190mph, half the speed of the X-15.

MORE DETAILS

Spike Aerospace, founded in 2013 Max Kachoria of NASA, built an 18-passenger supersonic jet with low-sonic boom, fuel efficiency, speeds up to 1,100 mph, and flight times slashed in half. Their current model is the S-512 which can get passengers to cities in a moment's notice: NYC to London: 3 hours.

MORE DETAILS