One might notice that airplanes always take off and land when there is a headwind. Why?
When the wind is upwind, the front side of the plane will suffer a lot of resistance, so that the landing distance can be shortened when landing.
At the same time take off against the wind, from top to bottom two floors of the airflow the wing of the relative speed difference is bigger, the pressure difference is big, thus to produce more of the wing lift, at the same time shorten the take off lift is big also shorten the take-off distance from the plane of the main causes of the wind ups and downs, there are two: one, can shorten the take off or landing glide distance;
When a plane takes off, it can lift off the ground only if the lift generated by the wings is greater than the weight of the plane.
And the amount of lift is closely related to the speed of the air flow over the surface of an aircraft wing: the greater the speed of the air flow, the greater the pressure difference between the upper and lower surfaces of the wing, so the greater the lift.
If you take off against the wind, the speed of the airflow over the surface of the wing is equal to the speed of the skidding plus the wind speed.
Therefore, when taking off against the wind, the lift force generated by the aircraft is relatively large, and the sliding distance is correspondingly shortened.
Second, the safety is better;
When we land, we want the plane’s speed relative to the ground to decrease as quickly as possible.
Landing against the wind can reduce the speed of the aircraft with the help of resistance, which reduces the skidding distance during landing.
When the plane takes off or lands, the speed is relatively slow, the stability is poor, the take-off and landing against the wind is not easy to be affected by the crosswind, but also can make the plane to maintain a certain lift, so it is relatively safe.
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