What is the fastest a 747 has ever flown?
What is the fastest a 747 has ever flown? 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.
What is the 747 max top speed?
1. Boeing 747-400 – Mach 0.92 (705.89656 mph) A Boeing 747-400 taxiing on a runway. The fastest commercial airliner in the world in regards to maximum speed is the wide-bodied, four-engine Boeing 747-400.
Is it illegal to fly supersonic?
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.
How many hours can a 747 fly?
This depends on the size of the plane, its efficiency, and how fast it's flying. A modern Boeing 747 can fly about 15,000 km (9,500 miles) when it's flying at 900 kmh (550 mph). This means it can fly non stop for almost 16 hours!
Do pilots need permission to go supersonic?
A sonic boom is a loud noise that people on the ground can hear when an aircraft, for example, breaks the sound barrier by traveling faster than the speed of sound. Supersonic flight is banned over land in the US without special government authorization because of the inconvenient noises and tremors it can produce.
What is the 1100 mph plane?
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.
Why does 747 fly so fast?
Its wings have a high sweep angle of 37.5° for a fast, efficient cruise speed of Mach 0.84 to 0.88, depending on the variant. The sweep also reduces the wingspan, allowing the 747 to use existing hangars.
Was 747 underpowered?
Underpowered and heavy The increased MTOW also led to problems for engine supplier Pratt& Whitney (P&W). Its innovative JT9D engine was designed to produce 41,000lb of thrust but would now need to generate an additional 1,000lb to propel the heavier 747 into the air.
Can any jet go Mach 9?
No airplane has ever gone this fast. The speediest airplane ever built is Lockheed's SR-71 Blackbird, which traveled at Mach 3.2. Anything above Mach 9 and you lose communications with the ground, as plasma starts enveloping the vehicle, as if it were a spacecraft returning to Earth through the upper atmosphere.
Why don t we hear sonic booms anymore?
The power, or volume, of the shock wave depends on the quantity of air that is being accelerated, and thus the size and shape of the aircraft. As the aircraft increases speed the shock cone gets tighter around the craft and becomes weaker to the point that at very high speeds and altitudes no boom is heard.
Why is supersonic flight 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.
Will air travel ever get faster?
Aerospace start-ups are working on making this a reality with supersonic and hypersonic planes. Supersonic means faster than the speed of sound (Mach 1), while hypersonic means travelling at five times faster than the speed of sound (Mach 5).