These days, I always see planes flying through the sky. There is a sound during the day and at night

Whether the plane you see is a passenger or cargo plane or a helicopter.

There is a sound during the day and at night, is it unusually loud at close range? Or is it just a slight high-altitude roar from very high up?!

If it is a passenger plane, it may be due to the seasonality of the recent spring, often the weather is clear and cloudless, and the sight effect is naturally better than in winter, and the visibility.

It's higher. You can always see planes at high altitude.

In fact, it used to be common, but it was not easy to see, and the visibility was low.

If it's a helicopter, or a jet.

Could it be that the local spring needs spring rain in the near future, but there may be a change in the climate, and the local authorities, in order to keep this year's agriculture from being affected, have taken artificial interference to help apply rain, rainfall, and help local crops or plants to bloom or sprout and grow.

Probably, recently a new airport in some province or some city near your Hubei Province has been repaired and is being prepared for use, and recently it is testing each other's flight routes.

Conducting tests or rehearsals for passenger aircraft flights.

Maybe you've been more idle and free lately, and the living environment around you has suddenly become less noisy and you're not so busy lately, so you have the time and mind to notice the difference above the sky.

Maybe it's the plane on the mission, or you add the new route that the sky has recently planned, and now it is commonplace to see planes in the sky, after all, there are too many planes, and there are many planes traveling by plane every day, so there are many planes flying in the sky.

It could be that the state is conducting air exercises. It could be nearby. It is possible that the local ** is collecting the data.

I think it's normal. The sky over our house is day and night, and after a while, a number of planes come over, and the noise is very loud, and we are used to it.

Hello friends, look at the situation you described, don't associate anything with something in this situation.

It is also from Hubei, there are a lot of planes on a recent route from morning to night, there are others before, but the sound is very small and very high and invisible, on this route is flying very low, you can see it very clearly, the sound is very loud.

It's the same on our side, no one can solve my problem, I'm really helping you look forward to it,

I'm here too, it's a little close, and it's loud.

The loud bang of the plane is due to the fact that the plane is flying at high altitude and supersonic speed, and the sonic boom is instantaneously generated. It is understood that the sonic boom of the aircraft is the first sound produced by the critical point of the aircraft exceeding the speed of sound, and the strong wave will be generated during the flight of the aircraft, and the first sound will appear on the ground.

Under the route of supersonic aircraft, a ground roaring pollution area will be formed, which is about 80 kilometers to 160 kilometers wide, and can produce about 130 decibels of noise in this large area.

When the plane flies at a speed exceeding the speed of sound, the dense wave of sound emitted by the plane cannot run in front of the plane, so it is all stacked behind the fuselage, forming a cone-shaped cone.

When this detonation wave arrives, we hear all the sound that accumulates, and audibly, it's a sonic boom with a bang.

There could be several reasons why there is the roar of planes outside in the middle of the night:

1.It is surrounded by a high-incidence area of lightning, and when the positive and negative charges in the clouds collide, a loud sound will occur, commonly known as thunder. This natural phenomenon has nothing to do with airplanes, but it can be caused by thunderstorms that produce the roar of airplanes when flying.

2.The quality of the sky is better at night, and the aircraft chooses to conduct training flights at night, when the sound is clearer because of the open space and low signal interference.

3.Night flight training is carried out in formation, and at this time, the number of fighters is large and the noise generated by the engines is louder.

In short, the roar of planes outside in the middle of the night is likely to be caused by weather factors or flight training, as long as it is not too frequent and continuous, it generally does not affect people's rest and sleep.

Low altitude and high noise for a short time after takeoff. After the plane takes off, it is necessary to leave the site according to certain procedures and routes, and the route will generally be far away from the city and will try to go around.

It should be military aircraft that produce this effect.

Night flight training, general formation flight, fighter jets sometimes hit afterburner, and the noise generated by the engine is very loud.

Hello first, as we all know, there are more flights during the day than at night, and most of the flights at night are concentrated in the first half of the night, and there are basically no flights in the second half of the night (if any, most of them are international flights). There are more flights during the day than at night, so there is a higher chance of hearing a roar during the day. Second, the Civil Aviation Administration of China (CAAC) has a clear Qingsun judgment limit on the flight altitude of civil aircraft flying at night, and the low air flow at night is unstable and the flight resistance is large, so the flight altitude of aircraft at night is generally higher than that during the day.

The plane flies high, that is, it is far away from us, and the sound of Yukai becomes smaller, or cannot be heard. Third, it is affected by air temperature, humidity, and density. At night, the air temperature is low, the humidity is high, the cold air sinks, the air at high altitude is thin, and the air at low altitude is dense.

Whereas, sound attenuates less in air with high temperature and attenuates more in air with low temperature; Attenuation in air with low humidity and large attenuation in air with high humidity; decays less in thin air and more in dense air; So the sound attenuation at night is great, and the sound we hear is a little bend. Fourth, it may be that you fell asleep at night and then you couldn't hear.

Summary. This sound is usually caused by an airplane flying overhead. Aircraft often produce engine noise and aerodynamic noise, which can be more noticeable when flying at low altitudes or landing and taking off at nearby airports.

This sound is usually caused by an airplane flying overhead. Aircraft often produce engine noise and aerodynamic bucket force noise, especially when flying at low altitude or when the burning finger is landing and taking off near an airport in the attached airspace.

You've done a great job! Can you elaborate on that?

A: This situation may be due to the sound produced by the aircraft flying at low altitudes. The engines and aerodynamics of an aircraft produce a lot of noise.

Airplanes often reduce their flight altitude when taking off, landing, or approaching an airport, which causes the noise to be further amplified. In addition, the airflow and wing vibrations generated by the aircraft during flight can also produce a certain amount of noise. These airplane sounds are more pronounced in cities, which usually have more buildings and hard surfaces that reflect and play loud sounds.

In addition, weather conditions can also affect the propagation of sounds, such as wind direction and humidity. It is important to note that the flight trajectory and operating rules of the aircraft are usually adjusted according to the regulations of the Civil Aviation Authority to minimize noise disturbance to residents and the urban environment. However, due to the impact of flight volumes and urban development, these noises may still be unavoidable.

In order to reduce the impact of aircraft noise on residents, a number of measures have been taken. For example, building soundproof walls near airports, providing aircraft trajectory adjustment, using engine technology with lower noise balances, etc. At the same time, residents can use measures such as soundproofing equipment or closing windows to reduce the noise of aircraft.

In general, the roar of an airplane in the sky is a noise produced by the engines and aerodynamics of the aircraft. This noise is more pronounced in cities, but various measures can be taken to reduce the disturbance to residents.

Caused by an imbalance in the air pressure inside and outside the middle ear, the aircraft is generally silent.

Abnormal noise, discomfort or pain in the ears after flying is caused by an imbalance in the air pressure inside and outside the middle ear. Some pilots and flight attendants suffer from "aviation otitis media", which is caused by long-term flying. The middle ear and the external auditory canal are closed by the tympanic membrane, the middle ear chamber communicates with the pharynx through the eustachian tube, and the pressure of the air in the middle ear is balanced by the eustachian tube and atmospheric pressure.

The eustachian tube itself is not very smooth, usually it is only a potential tube, and when suffering from colds, pharyngitis and other diseases, or when there is inflammation and edema in the nasopharynx, the eustachian tube is even less smooth. When the plane rises, the ambient atmospheric pressure decreases with altitude, the pressure inside the middle ear is relatively high, and the tympanic membrane expands to the external auditory canal, so it will cause discomfort and pain, until the plane flies at a certain altitude, the gas in the middle ear is partially expelled through the eustachian tube, and the discomfort and pain will disappear after the pressure in the middle ear is balanced with the outside world. When the plane lands, the internal and external pressure is reversed imbalanced, the pressure outside is high, the pressure in the middle ear is low, the tympanic membrane is pressed to the middle ear, and the tympanic membrane is depressed, which will also cause discomfort and pain, until the air enters the middle ear through the eustachian tube a little, and the internal and external pressure reaches a balance, and the symptoms will disappear.

Some methods can be more effective in reducing ear discomfort during take-off and landing, such as swallowing, exercising the soft palate, moving the jaw, pinching the nose and inhaling (when the aircraft is ascending) and puffing (when descending), etc., to promote the opening and patency of the eustachian tube, so as to balance the air pressure inside and outside the middle ear as soon as possible. The cabin of the aircraft is a pressurized cabin, and the air pressure in the cabin is kept unchanged by various means.

Military fighters are fast and produce loud noises when the sound barrier is breached; What you can see now is generally civilian aircraft, which are not as fast so there is no such loud noise.

Here's an explanation of the sound barrier: Sound barrier is also known as sound barrier. When the flight speed is close to the speed of sound, the drag will increase sharply, the handling performance will deteriorate and the flight speed can not be increased, so people once thought that the speed of sound is an insurmountable obstacle to the speed of the aircraft, so it has this name.

When the flight speed is increased, it is now possible to break the sound barrier and produce loud noises.