Why do you need to run a distance when the plane takes off?

Introduction: Airplanes are currently the fastest means of transportation in the world.

We all need to fly long distances. Passengers who have been on a plane should know that the plane needs to run a certain distance before taking off before it can sail normally. And is the run-up of the plane really necessary? How does it work? <>

The reason for the run-up is not difficult to understand, if you want to make a car with hundreds of tons take off, the difficulty can be imagined, which requires the upward air flow around the body, with the help of external force to lift the body. This is the case when an aircraft takes off, because the wings of the aircraft are fixed, and the weight of the aircraft is too heavy, it is difficult to directly obtain upward force, which affects the long-term take-off work of the aircraft, resulting in the inability of the airport to operate.

Therefore, if you want the plane to take off normally, you need to have a certain relative speed.

to force the air to move downwards to obtain lift-off momentum, and when our plane takes off, the surrounding air will flow backwards, so the plane has to change the direction of the air flow when it takes off. Therefore, in order to change the direction of the airflow, the designers added wings to the aircraft, so that the aircraft gained a lifting force to help the aircraft fly. <>

For example, birds are common birds that rely on constant flapping of their wings to fly. And because the wings of the airplane are fixed, I don't want to be able to change the direction of the air flow by flapping the wings like birds. Therefore, the running work before the aircraft takes off is to let the aircraft obtain upward force, and only when it reaches a certain speed when moving forward, so that the pressure above the wing is less than that below, and then the upward lift is obtained, and the lift force obtained can support the aircraft to take off, and the aircraft can fly normally.

Tips for taking a planeFinally, I would like to share a few tips when taking a plane to you: first of all, you must know at least an hour in advance to wait at the airport; If you have large baggage, you can check it in in advance. To get to the security lane, you need to take the passenger coupon of the ticket and the boarding pass.

The ID card is handed over to the security officer; There is a round button under the seat on the plane, which can be pressed firmly when you want to lie on your back, and the backrest must be straightened when the plane takes off and lands. Finally, it is mandatory to turn off your phone during the flight, and you can choose to listen to it** or bring a book that interests you.

Because it takes a certain speed for an airplane to take off to ensure that the air is enough to lift the aircraft, it is necessary to accelerate a certain distance before the aircraft reaches take-off speed.

Because this is equivalent to a run-up, the plane can have a buffer time, so that the plane can take off smoothly.

This is to prepare for takeoff, and this section of slow travel is called taxiway, which is also a kind of help, so that it can take off better.

Because the size of the plane is very large, the plane needs to use a force to fly when it is running.

Because this can increase the speed of the aircraft, and it can also have a very good pull and thrust, so that it can take off well.

Because the power unit of the engine needs to have traction, the speed of the aircraft will have a relationship with the power, which can increase the speed of the aircraft.

The reason why airplanes can fly is because of the pressure difference between the upper and lower surfaces of the wings, which is used to overcome gravity. The taxi run before take-off is to reach a sufficient speed, and only when a certain speed is reached, the air will lift the plane up, so that it is ...... to take offThe principle of take-off of an airplane is the lift generated when air passes through the wings at high speed. Therefore, it is not impossible to take off on the spot, take a super big fan to blow the plane, you can also fly, but when the fan can't blow, it will fall.

The lower side of the wing of the aircraft is flat and the upper side is convex, when the aircraft is running, the air flows along the wing, due to the different shapes of the upper and lower sides of the wing, in the same time, the air flow on the upper side of the wing is longer than the air flow on the lower side, and the air flow on the upper side is faster than that on the lower side, so that the pressure on the upper side is less than that on the lower side, so that the aircraft produces upward buoyancy, so that the aircraft takes off when it reaches a certain speed. Thank you!

It can take off directly, that's rockets, F35 and ***. Airliners don't have that powerful engines yet. If it could, the plane would become a rocket......Of course, some fighters can take off and land vertically and fly directly, the reason is that fighters are lighter than passenger aircraft.

The airliner is too heavy for two engines to take off and land vertically, so it needs to run, and when the runway reaches a certain speed, the lift generated by the wings can lift the plane off the ground. The airplane is accelerated by the thrust of the engine, generating lift, and the lift overcomes gravity, and the plane can take off.

After the aircraft leaves the ground, due to inertia, it will continue to move forward at high speed, and then the thrust of the engine can play a great role, and only a small throttle is needed to maintain the high-speed flight of the aircraft. In addition to airplanes, some birds, such as swans, are too heavy to run a certain distance before taking off before they can fly. Of course, one thing to say is that if the elevation angle of the airliner is too large when flying, it suddenly changes to rocket mode and climbs vertically, and it is very likely to fall.

The one that takes off directly is called ***, and the lift required for the plane to take off is much greater than ***.

Because the engine power of civil aircraft is not very good, the starting speed is relatively slow, and it naturally requires a long run-up time.

Because the passenger flow of civil aircraft is relatively large, and the number of people on the plane is relatively large, it needs to run for a long time when taking off.

Because then you can have a good impulse, and you can also increase your speed, and you can also have enough speed to rise into the air.

Because only in this way can civilian aircraft gain acceleration and have enough speed to fly into the sky.

Introduction: Many people don't know why airplanes help them run when they take off.

Many people will have the experience of taking a plane, I don't know why the plane has such a phenomenon, when taking the plane, the plane will have some running before takeoff, this time is because you want the plane to fly better, if there is no run, the plane is very difficult to fly, there must be this process. When taking the plane, you must pay attention to some precautions, you must not let yourself have bad behavior, when taking the plane, you must strictly follow the rules and regulations on the plane, many people do not know why this phenomenon occurs in the process of flying, you must observe carefully, take a look at what kind of things will happen when the plane takes off, you must pay attention to it, you must adjust your state on the plane, do not let yourself appear in this situation, you must adjust yourself appropriately.

Many people must choose a way that suits them to help themselves when they are flying. When you are on the plane, you must not open the windows, and you must make proper adjustments. Some people want to open the window because they see the beautiful scenery outside the plane, this time is very comfortable, we must properly control our behavior, if you feel very bored on the plane, you can also take a break, don't let yourself have this situation, usually you must adjust your behavior appropriately, so that your behavior can be better adjusted.

If you usually feel uncomfortable, you should also inform some people on the plane appropriately to help you relieve yourself, if you are always uncomfortable, the whole person is also very uncomfortable when taking the plane. Many people always feel bored when they are flying, and this is a good time to chat with the people around them.

Because the run-up can take off more smoothly and reduce the pressure of the airflow, it is very difficult for the plane to fly without the run-up.

Airplanes fly better, that's why there are such situations, and airplanes have strict rules during the flight.

In fact, this is to increase the power, but also to increase the buoyancy of the points, which causes the plane to fly.

Doing so allows the aircraft to fly higher. Doing so allows the aircraft to have an inertial effect.

The speed of a civil airliner is generally 900 km/h.

The Boeing 737 can cruise at Mach Mach, which is nearly 918 km h, and the Boeing 747 can cruise at Mach 1,120 km h, which is the fastest.

Others, such as 320 330 340 or 767, are also in between. The fastest record in civil aviation is that Concord can reach Mach 2, which is about 2600km h, but it is no longer allowed to fly.

In addition, at the time of landing, it is 140 knots, 160 knots, which translates to 260 km h and 297 km h, and the take-off speed is about the same.

American Boeing series: Boeing 737-300: 785 kmh Boeing 747: 940 kmh.

Boeing 7E7: 980-1050 kmh.

Boeing 767: 850 kmh.

Boeing 777: 870 kmh.

European Airbus family: A-300 639 km-h, A-320 900 km-h.

A-340 1050 km h.

A-380 920 km h.

Concorde 2250 km.

Aeroflot: 134 900 km h.

The slow section is called a taxiway. The section where the plane accelerates to take off is called the runway. After the aircraft is rolled out of the terminal, it needs to be moved from the taxiway to one end of the runway in preparation for takeoff.

Sometimes the exit of the taxiway is not in a section of the runway, so you need to move to the end of the runway before making a U-turn and taking off.

This is an acceleration process, some in order to move the aircraft to the designated place, just like a car can not be started at full power, a process is required to accelerate, and in order to meet the take-off conditions, the aircraft must also go to a specific position to taxi at full power.