Is Mach 1 possible underwater?

Water-tunnel tests have already proven that speed can be achieved: In 1997, the Navy tested a supercavitating projectile (illustration above) that reached 5,082 feet per second, becoming the first underwater projectile to exceed Mach 1.

Can a sonic boom occur underwater?

As an aircraft flying at a hypersonic speed over oceans, an underwater sonic boom is generated and potentially leads to the harmful influence on marine animal and environment.

How fast is Mach 1 in water?

It's around 343 m/s. Correspondingly, the speed of sound in water is around 1500 m/s.

Is it possible to break the sound barrier under water?

Answers and Replies. There is no sound barrier in space. In fresh water at 20 C, the speed of sound is ~1482 m/s; tough to beat in a medium that's about 1000 times as dense as air. Certainly a normal sized object can in principle pass through a body of water faster than the speed of sound in the water.

Why is it illegal to break the sound barrier?

Breaking the sound barrier leads to a sonic boom. And regulators have determined that people need to be protected from sonic booms. Planes produce sound waves when they travel. At under Mach 1, these waves propagate in front of a plane.

Sonic Boom in water

Has a human ever broken the sound barrier?

Traveling faster than the speed of sound seems impossible for a human to accomplish without the use of jet planes or machinery. But back in 2012, a skydiver broke the sound barrier by freefalling with a well-equipped pressure suit and a parachute from a height of 127,852 feet.

Is anything faster than Mach 1?

At this speed, the entire aircraft is experiencing supersonic airflow and traveling at speeds faster than Mach 1. Generally, supersonic speeds range from Mach 1.2 to Mach 5.

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 human go Mach 10?

That being said, is it possible for the human body to be able to withstand such acceleration? The most likely answer is a resounding no. Mach 10 speed has never been achieved by a manned aircraft, though, so it has never been tested.

Why is sonic boom illegal?

The sonic boom ban came after Americans filed tens of thousands of claims against the Air Force supersonic jets during the 1950s and 1960s. Then, the Federal Aviation Administration (FAA) prohibited overland supersonic commercial flights in 1973. The law, FAR 91.817, is still in effect to limit sonic booms.

Can a human withstand a sonic boom?

Tests, however, have shown that structures in good condition have been undamaged by overpressures of up to 11 pounds. 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.

Why is sonic boom not allowed?

Sonic booms due to large supersonic aircraft can be particularly loud and startling, tend to awaken people, and may cause minor damage to some structures. This led to prohibition of routine supersonic flight overland.

Can a human survive Mach 20?

Our bodies are surprisingly resilient in many situations, but rapid acceleration is not one of them. While the human body can withstand any constant speed—be it 20 miles per hour or 20 billion miles per hour—we can only change that rate of travel relatively slowly.

What Mach can a human survive?

That's what kills in a collision, for instance. Changes in speed are expressed in multiples of gravitational acceleration, or 'G'. Most of us can withstand up to 4-6G.

Can 747 break 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."

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.

What happens when Mach 1 is exceeded?

When an aircraft exceeds Mach 1 (i.e. the sound barrier), a large pressure difference is created just in front of the aircraft. This abrupt pressure difference, called a shock wave, spreads backward and outward from the aircraft in a cone shape (a so-called Mach cone).

Did Tom Cruise go Mach 10?

Top Gun: Maverick has achieved Mach 10. In fact, if you've seen the film, you know that Pete “Maverick” Mitchell (Tom Cruise, of course) does achieve the previously unthinkable when he hits Mach 10 in the opening sequence of the film, working as a test pilot for the Navy.

How fast is a bullet in Mach?

To put this into context, the average bullet travels about 1,700 miles per hour. Mach 1 is about 767 miles per hour. A railgun projectile will travel at Mach 6 – that's nearly three times faster than the typical bullet.

What broke Mach 1?

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). The experimental purpose-built aircraft reached 1,127 kilometers (700 miles) per hour (Mach 1.06).

How fast was the Red Bull jump from space?

The jump records Baumgartner attained: Exit altitude of 38.9694 kilometres (24.2145 mi) Maximum vertical speed (without drogue) of 1,357.6 kilometres per hour (843.6 mph)

Has any animal broken the sound barrier?

At least 150 million years before Mr. Yeager in 1947 became the first human to break the sound barrier in a rocket plane, the largest dinosaurs, a group known as sauropods, could have mustered the right stuff to send sonic booms resounding over the Mesozoic landscape. No, the 100-ton creatures never got off the ground.

Why can't you break the sound barrier over land?

Flying so close to the ground, the air is denser and creates more friction and drag – and, anyway, pilots are banned from breaking the sound barrier over land.

What does 10gs feel like?

Kirby often says, “At 10 G's, it's hard to breathe and feels like a house is sitting on your chest.” That's a ton of pressure, literally! When a person begins to lose consciousness due to positive G's, this is called G-lock.