What are the weather factors that affect civil aviation flight? What is the main reason?

What are the main factors affecting flight safety? 1, pressure, temperature, atmospheric density.

These factors will affect the drift distance, aircraft speed and fuel load when taking off and landing. Experts pointed out that the accuracy of aircraft and high-altitude flight is closely related to the on-site air pressure and standard atmosphere, and the temperature has a great influence on the aircraft load, take-off temperature and taxiing distance when landing. With the increase of temperature, the air density becomes smaller, the obtained lift becomes smaller, the aircraft load decreases and the taxiing distance becomes longer.

2. Wind.

The wind will affect the distance and time for the plane to take off and land. Experts say that the general aircraft is a kind of change, and the crosswind will not be too strong, otherwise it will not take off and land. When flying on this route, the wind will reduce fuel consumption and shorten the flight time, but the headwind is the opposite. But it is easy to cause aviation accidents, accounting for 20% of aviation accidents. This is caused by the discontinuity of the wind, which is short-term, small-scale and high-intensity.

3. Cloud.

The advanced cloud at the airport will make the pilot unable to see the runway, which will directly affect the take-off and landing of the aircraft. Among them, the largest cloud is a flowing cloud. It is easy to vibrate after entering the plane, which will cause instrument failure, fuel tank explosion, or lead to strong bulging, icing, checks and balances and flight accidents.

4. visibility

In weather conditions, the professional popular concept is a normal vision, and you can see or identify the maximum horizontal distance between the target and the sky background. Its most direct relationship with the plane, the so-called "airport closed, airport open, pure weather flight", refers to the conditions of clouds and visibility.

5. bump.

The sudden vibration, shaking and vibration in the flight of an airplane are called bumps. When the bump is severe, it is thrown dozens of times a minute, the height changes by tens of meters, and the speed changes by 20 kilometers per hour. Usually related to air turbulence or temporary out of control or temporary.

6. freeze.

Aircraft icing refers to the phenomenon of ice accumulation in some parts of the aircraft body. It is mainly formed by supercooled rain in the cloud, which forms freezing behind the aircraft body, or it can be directly formed on the surface of the aircraft body through water vapor. Aircraft icing will reduce the aerodynamic performance of aircraft, increase the speed and drag of aircraft, and affect the safety and decisiveness of aircraft. Ice on the rotor and propeller will cause the aircraft to tremble; The engine air intake freezes, which may damage the aircraft; The windshield freezes, which hinders visual flight; The antenna freezes, affecting communication or causing communication interruption.