What does a sonic boom look like and how does it affect people?

The propagation of sound in the air is like the water waves created by throwing stones into water, and it travels outward through the form of waves, which is called sound waves. The sound we usually hear is caused by sound waves entering the ear and causing the eardrum to vibrate. When an airplane flies at supersonic speed in the air, a wedge-shaped or cone-shaped wave will appear in the nose or protrusion like a speedboat moving forward in the water, which is the shock wave.

The dense sound waves emitted by the airplane cannot reach the front of the airplane, so they are all stacked on top of the fuselage to form a cone-shaped sound cone. As they propagate outward, they interfere and influence each other, and then merge into a sonic boom pre-shock wave that encompasses the nose and a post-shock wave with a random tail. Although this wave can be compared to the wedge-shaped water wave described above, it has very different properties.

The thickness of the shock wave is very small, and the pressure, density, and temperature of the air suddenly increase after passing through the wave, and the velocity decreases immediately. When these two shock waves affect any space and object, they will feel this strong change, which will be reflected in the human ear, so that the eardrum will be affected by many factors such as flight speed, altitude and course, which can be controlled, and other factors such as meteorological conditions and turbulence close to the ground cannot be changed. Standard sonic booms are often represented by an n-shaped wave, which means that the head and wake waves of the aircraft are essentially the same intensity and expand uniformly over the duration.

The strong pressure wave of the aircraft causes a pressure change on the ground of about 78 Pa (8 kgf m2) and lasts about seconds. The pressure decreases with the increase of flight altitude, but the range of influence increases. Due to the short time, the sonic boom generally has little impact on the ground outdoors, and although the change in indoor pressure is small, it resonates after many reflections, lasts for a long time, and has a great impact.

Therefore, supersonic flights are often prohibited at altitudes below 10,000 meters above cities. The energy of the sonic boom is enormous, and the sonic boom produced by a low-altitude supersonic fighter jet is enough to shatter the glass of doors and windows. A Sonic boom produced by a Concorde flying at twice the speed of sound at an altitude of 16,000 meters exerts a pressure of up to 100 Pa on the ground, which is equivalent to exerting 10 kilograms of force on a piece of glass of about one square meter.

Let's convert the pressure into a more intuitive sound intensity, 100 bar is equivalent to about 133 decibels, which is equivalent to being in a heavy metal rock.

**Will be next to the big speaker. As a result, Concorde was banned from flying at supersonic speeds on land, which, along with high operating costs, directly cost the life of this elegant aircraft, and in 2003, all Concorde withdrew from the market, and there were no more supersonic airliners in the sky.

figure. "Sonic boom.

The strength of the aircraft as well as the magnitude of the impact on the ground, and the flight altitude of the aircraft.

There is a direct relationship. Because, like water waves, shock waves are farther away, the weaker the strength of the waves. When the aircraft flies at low altitude and supersonic speed, not only can people and animals on the ground hear a deafening loud noise, affecting people's lives and work, but also shattering glass and even damaging unstable buildings, causing direct losses.

As the flight altitude increases, this effect becomes weaker and weaker, and when it exceeds a certain altitude, the ground is basically not affected <>

When an airplane flies at supersonic speed in the sky, it will produce a cone wave like a speedboat, and when two cone waves touch a space or object, it will produce a strong resistance, which will cause a very strong reaction, and this reaction will spread to the human ear and hear two loud noises, which is a sonic boom. Sonic booms occur only when airplanes are flying, and at supersonic speeds. Sonic booms have an impact on people's work and life because of excessive sound, and in serious cases, they will also cause glass to be shattered, including the collapse of many unstable buildings.

Why is there a sonic boom? It can be said with a layman's example. When we throw a stone into the water, there will be ripples on the surface of the water, spreading out in all directions, and then the whole surface of the water will be this ripple.

If a boat is placed on the surface of the water, the water waves become cone-shaped, and the generation of water waves is dispersed from the direction of the boat, and this water wave is wedge-shaped and propagates outward. The sound waves generated when the airplane is moving are dispersed like these water waves.

The sonic boom is only produced when the plane is flying at supersonic speed in the sky, and when the plane reaches a certain altitude, it will fly at supersonic speed, but because the shock wave will cause a strong change in pressure, so that we can hear the sonic boom. And this kind of sonic boom can only be heard outside the plane, and the pilot in the plane will not have such a feeling, and he will not hear this kind of sound.

The strength of the sonic boom is directly related to the altitude at which the aircraft flies, and the higher the altitude the aircraft flies, the lower the impact on the ground when the sonic boom is generated. On the other hand, when the aircraft flies at supersonic speed relatively close to the ground, the impact of the sonic boom on the ground is very huge. The milder effect is only for people to hear loud noises, and the larger effect is for the glass to shatter with a sonic boom.

Many people have heard of sonic booms at present, but almost no one has seen the effects of sonic booms on things, and at this time, airplanes can fly at supersonic speeds because they have reached a certain altitude.

A "sonic boom" is a loud sound caused by a shock wave when an object moves through the air at a speed that breaks through the speed of sound. The human ear cannot withstand the "sonic boom", and in severe cases even the nose will bleed.

When breaking through the sound barrier, a huge amount of energy is generated, and when it reaches the human ear, the person will feel a short and violent ** sound, which is a sonic boom, which will cause some damage to the human body and buildings.

A sonic boom is when the speed of an object is close to the speed of sound, and the energy is transmitted to the human ear, producing a short and strong ** sound, which may damage the hearing of the ear.

Sonic boom refers to the gradual accumulation of shock wave surface on the windward side of the object due to the compression of air by the object itself that cannot propagate rapidly when the sound barrier is broken, and the acoustic energy is highly concentrated on the shock surface. When this energy reaches people's ears, it will make people feel a short and extremely strong ** sound.

When the speed of the object is close to the speed of sound, there will be a strong resistance, causing the object to produce strong oscillations and the speed decays. This phenomenon is commonly known as the sound barrier.

A "sonic boom" occurs when the relative velocity of an object in the air breaks upwards to reach the Mach 1 tipping point. Under normal circumstances, it is mostly a strong pressure wave generated by the aircraft when flying at supersonic speed, which is transmitted to the ground to form a thunderous sound. A peculiar phenomenon that accompanies the breaking of the sound barrier is the "sonic boom cloud", which is caused by the compression of the surrounding air behind the shock wave surface due to the increase in air pressure, causing the water vapor to condense into tiny water droplets that look like clouds.

This cloud usually lasts only a few seconds, and the shock wave appears, which is fleeting. Sonic boom cloud is a common name for this phenomenon in China, and the more serious description is the Plante-Grauge decondensation cloud).

If you have visited the flight of a supersonic military aircraft, there is a risk of encountering a sonic boom. A sonic boom is a strong pressure wave generated by an aircraft when flying at supersonic speed, which is transmitted to the ground to form a thunderous sound. With a loud bang, the glass of the house may be shattered.

There are many factors that affect the sonic boom, but there are also rules to be found, and the aerospace aircraft must try to prevent the generation of the sonic boom in order to complete take-off and landing, otherwise the harm to the environment will affect its use.

When the hand is holding the A end, the kinetic energy is constantly driven to the other end. This will make the AC longer and shorter, the BC will be smaller and smaller, and the whip tip will be thinner, which will cause the B-end to be faster and faster, thus exceeding the speed of sound and producing a sonic boom.

What is a sonic boom? When the speed of the aircraft exceeds the speed of sound, an interesting scientific phenomenon occurs.