Why airplanes are easier to take off when there is a headwind

We know that flying a kite always involves pulling the kite into the wind for a certain distance, with the aim of increasing the speed of the kite relative to the air, so that it can get more lift and rise faster. Similarly, the airplane should also run a distance before takeoff, so that it can produce enough lift to leave the ground, if it takes off under the headwind, the plane has not yet taxied and has a certain speed relative to the air movement, and gets a part of the lift, at this time the aircraft only needs a relatively small speed to reach the lift required from the ground, so compared with no wind, the distance of the glide is shorter. On the other hand, when an airplane takes off downwind, the plane needs to reach a large speed to reach the lift required to get off the ground, so the glide distance is relatively longer.

When the aircraft lands, similar to the situation when the aircraft takes off, the headwind landing, because the headwind increases the head-on resistance of the aircraft, the aircraft slows down faster, so that the glide distance is shorter, and the greater the wind speed, the shorter the gliding distance; When landing downwind, the aircraft has little resistance, slow deceleration, and a long glide distance, and if the wind speed is too high, the aircraft may rush off the runway. It is estimated that when the wind speed is 10 meters per second and the landing speed is 180 kilometers per hour, the airplane will land headwind, and the aircraft will run 560 meters, while when landing downwind is 1260 meters, the difference is more than doubled. Therefore, usually the aircraft lands in the direction of the headwind, but the headwind is not easy to be too large, otherwise it will cause operational difficulties.

If there is no headwind, parachutes and other devices are usually used to shorten the running distance.

In addition, the direction of the runway is fixed, but the direction of the wind changes frequently. Therefore, the aircraft cannot be all headwinds in landing, and it is often carried out under crosswind conditions, if the crosswinds are very strong, it is easy to make the aircraft unable to maintain balance, and deflection occurs on the runway, which increases the complexity of the operation. Therefore, when the aircraft takes off and lands in crosswinds, special attention should be paid to the deviation, otherwise there will be a danger of sliding off the runway.

Knowing the above reasoning, you can see why airplanes like headwinds, but when the runway is long enough and there are tall buildings in the upwind direction, it may be the best take-off direction to take off downwind, and wait until the plane has climbed to a sufficient height before turning to fly against the wind, which will minimize the impact of adverse wind directions. Although this did not meet the performance of the aircraft, it had to be aggrieved.

It's an increased wind, it's an increased wind.

It makes scientific sense that headwind is more suitable for aircraft takeoff, and taking off against the wind can obtain the maximum relative speed of the air and wings to achieve the effect of taking off from the ground faster, but there is a premise that the maximum limit speed of the aircraft cannot be exceeded.

Because airplanes are fluids, there is a certain scientific reason why those will give the airplane a kind of lift in a headwind, allowing the airplane to rise into the air faster.

The plane should take off against the wind as much as possible, which is safer.

Because taking off and landing against the wind can increase the lift or drag and reduce the ground speed or landing speed of the aircraft, it can shorten the take-off and running distance or landing distance of the aircraft, and at the same time, the windward take-off and landing is also conducive to the directional stability and maneuverability of the aircraft in motion, which is relatively safe.

Due to the slow speed of the aircraft during take-off and landing, the stability is poor, and the aircraft will be tilted in the event of a strong crosswind, so generally speaking, it is only possible to land downwind if the headwind condition cannot be selected and the runway length is sufficient.

The plane does not have to take off against the wind.

The take-off of an airplane depends on the lift generated by the relative motion with the air, and the magnitude of the lift depends on the relative speed of the aircraft with the air, not the relative speed of the aircraft with the ground. If taking off against a headwind, the aircraft taxiing speed is opposite to the direction of the wind speed, and the relative velocity of the aircraft and the air is equal to the sum of the two.

At this point, the aircraft only needs a small glide speed to get the lift it needs to get off the ground. As a result, the distance required to take off against the wind will be shorter than if it were to take off without wind. Conversely, if taking off downwind, the aircraft needs to reach a higher taxiing speed to get the lift required from the ground, and the glide distance is relatively longer.

1. Taking off and landing against the wind can increase the lift or drag and reduce the ground clearance or landing speed of the aircraft, so as to shorten the glide distance of the aircraft taking off or landing.

2. There is a higher safety guarantee, and taking off and landing against the wind is conducive to the stability and maneuverability of the direction of the aircraft in motion.

3. In fact, the plane does not fly by itself, but is lifted, the plane will produce a kind of lift when taxiing, and the wing on the plane is arched, the wing can cut through the air so that the plane has a kind of pressure, and the top of the wing is convex and the bottom is flat, so that the plane has a little power, and the power plus lift and pressure will make the plane fly.

4. At the land base, the runway is long enough for the aircraft to accelerate to the maximum lift, and then it can take off!

However, on aircraft carriers, due to the limited distance between the deck runways of aircraft carriers, carrier-based aircraft take off with the help of external forces to achieve maximum take-off lift. For example, steam catapults, etc. However, carrier-based aircraft take off more than they like to take off against the wind, because the forces of nature are very powerful.

The carrier-based aircraft takes off against the wind "If the wind is strong enough" to achieve take-off and lift in a very short time and distance, which can not only save fuel and reduce equipment loss, but also take off faster and more directly!

5. TheoreticallyBoth headwinds and tailwinds are capable of taking off and landing, but headwinds are better than downwindsAnd if there is a tailwind, it is easy to cause the plane to lose control. At the same speed, weight, etc., the gliding distance of a headwind can be much shorter than that of a downwind.

The gliding distance when landing against the wind is shorter than when downwind. Don't think that you can't land and take off with a tailwind, in fact, you can, but it's too risky.

In addition, *** can not be considered headwind or tailwind.

There are two main reasons why the aircraft should take off and land against the wind as much as possible: one is to shorten the distance of the aircraft to take off and land, and the other is to obtain better stability and safety.

When an airplane takes off, if the wind blows head-on, it will gain more lift at the same speed than when there is no wind or a tailwind, so it can take off off from the ground faster.

When landing against the wind, you can use the wind resistance to reduce the speed of some aircraft, so that the glide distance of the aircraft after landing is reduced, and the situation of the aircraft rushing out of the runway can be avoided.

Aircraft are generally slower during take-off and landing, and have poor stability, and if they are hit by a strong crosswind, the aircraft may deviate from the runway; In order to avoid this danger, the direction of the runway at the airport should be selected according to the prevailing local wind direction. However, in recent years, due to the rapid improvement of aircraft stability, the impact of wind direction on aircraft take-off and landing has also been greatly reduced.

Precautions

When an airplane takes off, if the wind blows head-on, it will gain more lift at the same speed than when there is no wind or a tailwind, so it can take off from the ground faster. When landing in the wind, you can use the drag of the wind to reduce the speed of some aircraft, so that the distance of the aircraft after landing is reduced.

Aircraft are slow to take off and land, less stable, and if they are hit by strong crosswinds, they may deviate from the runway. In order to avoid this danger, the direction of the runway at the airport should be chosen according to the prevailing local wind direction. In recent years, due to the rapid improvement of aircraft stability, the impact of wind direction on aircraft take-off and landing has been greatly reduced.

Because the faster the air flows through the wings, the higher the lift of the aircraft, and the easier it is to take off, this statement has been tested by countless physicists and pilots, and has a very reliable scientific reason!

Because the headwind can make the aircraft suffer resistance very well, and can make the aircraft move forward well, this wind direction is exactly the same direction as the aircraft, which is scientifically reasonable.

There is still some scientific truth in this statement, because if you fly against the wind, the air flow in the air will play the maximum role and make the plane fly faster.

It is because if it is a headwind weather, at this time, because the wind speed is particularly fast, it is more suitable for take-off, and there is still a certain scientific truth in this sentence.

1. Headwind take-off and landing can increase the lift or resistance cavity force to reduce the ground clearance speed or landing speed of the aircraft, so as to shorten the gliding distance of the aircraft taking off or landing.

2. There is a higher safety guarantee, and taking off and landing against the wind is conducive to the stability and maneuverability of the direction of the aircraft in motion.

3. In fact, the plane does not fly by itself, but is lifted, the plane will produce a kind of lift when taxiing, and the wing on the plane is arched, the wing can cut the air so that the plane has a kind of pressure, and the upper and lower sides of the wing are flat, so that the aircraft has a little power, and the power plus lift and pressure will make the plane fly.