Has a 747 ever broken the sound barrier?

High-speed 747s
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.


Has an airliner ever broke the sound barrier?

Seventy-five years ago, on October 14, 1947, the Bell X-1 Glamorous Glennis, piloted by U.S. Air Force Captain Charles E. “Chuck” Yeager, became the first airplane to fly faster than the speed of sound (Mach 1).

Can a 747 fly faster than the speed of sound?

Answer: The Boeing 747 can cruise at 92% of the speed of sound, Mach . 92. It is very rarely flown at this speed due to the increased fuel burn required. Most modern jets fly around 80% of the speed of sound, Mach .


Can a Boeing 787 break the sound barrier?

“Fair winds and following seas” ‒ a Virgin Atlantic's Boeing 787-9 Dreamliner reached a thrilling speed of 801 mph while flying over the United States. While this ground speed seemingly leaves behind the speed of sound (767 mph), the jetliner did not, in fact, magically turn supersonic.

Can a Boeing 777 break the sound barrier?

The journey is thought to be the quickest since supersonic jet Concorde stopped flying. The Boeing 777-200 reportedly reached ground speeds of 745mph, almost breaking the sound barrier, 761mph, during its transatlantic journey.


Has a 747 ever broken the sound barrier?



Why is there no sonic booms anymore?

Why don't we ever hear sonic booms any more? Noise abatement regulations halted supersonic flight (by civil aircraft) over U.S. land. The Concorde could still take off and land here because it broke the sound barrier over the ocean, but it's no longer in service.

Is it illegal to break the sound barrier?

Within the United States, it is illegal to break the sound barrier. The Federal Aviation Administration regulations are quite clear: "No person may operate a civil aircraft in the United States at a true flight Mach number greater than 1" except in certain, very limited conditions.

Do jet pilots hear the sonic boom?

This path is known as the “boom carpet." If you're WONDERing about how pilots handle sonic booms, they actually don't hear them. They can see the pressure waves around the plane, but people on board the airplane can't hear the sonic boom. Like the wake of a ship, the boom carpet unrolls behind the airplane.


How many mph would you have to go to break the sound barrier?

At what speed do you 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.

What goes 800 mph?

Bloodhound LSR rides the highway to the danger zone. Bloodhound in afterburner. “I treat Bloodhound as a very low-flying airplane,” says Ron Ayers, the chief aerodynamicist for the Bloodhound Land Speed Record project—a Mach-busting car designed to exceed 800 mph.

Can a 747 hit Mach 1?

"Original flight tests of 747s conducted in 1969 and 1970 took 747-100 models to speeds of Mach 0.99. In addition, Boeing knows one case in which a 747 operated by Evergreen International made an emergency descent at speeds that exceeded Mach 1."


At what speed does a 747 lift off?

A Boeing 747 under standard conditions must be going 296kph (184 mph) to take off. Additionally, weather factors can affect the ground speed need for takeoff. For example, a headwind will reduce the ground speed needed.

How fast is a 747 going when it takes off?

A typical takeoff speed for a Boeing 747 is around 160 knots (184 mph), depending on the jet's wing flap configuration, the number of passengers aboard, and the weight of their luggage, fuel load, current weather conditions, and other factors.

How loud is a sonic boom?

Sonic booms generate enormous amounts of sound energy, about 110 decibels, like the sound of an explosion or a thunderclap.


Do pilots hear the boom when breaking the sound barrier?

When a pilot flies the plane at a speed greater than the velocity of sound then shock waves are generated behind the plane , therefore for a pilot it is not possible to hear sonic boom (explosion of noise caused by shock waves) , as he is moving forward ahead of sonic boom . Was this answer helpful?

Do commercial planes hit Mach 1?

No aircraft company would build a jet designed to cruise right at Mach 1. In the transonic speed range (from roughly the high Mach 0.8s to around 1.1), there are many areas of mixed subsonic and supersonic air flow over the airframe, and following the localized supersonic flow there are shock waves.

What Mach is the speed of light?

Answer and Explanation: The speed of light is Mach 874,030. This is because the speed of light in air is 874,030 times faster than the speed of sound in air. Sound travels are a speed of 1234 km/hr while light travels at 1,078,553,020 km/hr.


How many Machs is 770 mph?

Mach 8 is approximately 6138 mph. However, 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 kilometers per hour at sea level.

Has any car broken the sound barrier?

ThrustSSC is a British-designed and built World Land Speed Record car. ThrustSSC holds the current World Land Speed Record which was set on October 15, 1997, by accomplishing a speed of 763 mph. By doing so, the supersonic car became the first land vehicle to officially break the sound barrier.

Can a sonic boom hurt you?

Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury. Damage to eardrums can be expected when overpres- sures reach 720 pounds.


How fast is a sonic boom in mph?

Sonic boom is an impulsive noise similar to thunder. It is caused by an object moving faster than sound -- about 750 miles per hour at sea level.

When were sonic booms banned?

In the 1950s and '60s, Americans filed some 40,000 claims against the Air Force, whose supersonic jets were making a ruckus over land. Then in 1973, the FAA banned overland supersonic commercial flights because of sonic booms—a prohibition that remains in effect today.

What is the max Mach speed?

An airplane flying less than Mach 1 is traveling at subsonic speeds, faster than Mach 1 would be supersonic speeds and Mach 2 would be twice the speed of sound. Guinness World Records recognized NASA's X-43A scramjet with a new world speed record for a jet-powered aircraft - Mach 9.6, or nearly 7,000 mph.


Is it illegal to fly Mach 1?

Currently, U.S. law prohibits flight in excess of Mach 1 over land unless specifically authorized by the FAA for purposes stated in the regulations. The two supersonic rulemaking activities would not rescind the prohibition of flight in excess of Mach 1 over land.

How fast is Mach 10?

As the final X-43A flew, blistering temperatures created by the nearly Mach 10 (7000 mph) speed were in the neighborhood of 3600 degrees, the hotspot this time being the nose of the vehicle.