In general, will showers affect flights? On May 2, Beijing flew to Shenzhen with showers.

Let me introduce what weather affects flights:

Every stage of aircraft take-off, landing and air flight will be affected by meteorological conditions. Wind, temperature and air pressure are all important meteorological factors affecting flight. The wind on the ground will directly affect the operation of the aircraft, and the wind at high altitude will affect the flight speed and fuel consumption of the aircraft on the route. Temperature can change the thrust of the engine, affect the airspeed indicator, take-off and landing distance and so on. When the temperature is higher than the standard atmospheric temperature, it will increase the take-off distance and climb time and reduce the aircraft load. Air pressure will affect the flying height of the plane. Due to the frequent changes of air pressure in various places, the indication error of air pressure altimeter is often caused. In addition, weather phenomena such as thunderstorms, low clouds, low visibility, low-level wind shear, atmospheric turbulence, air jet, bumps and icing directly threaten flight safety.

Thunderstorm is one of the main weather affecting flight in summer. Lightning and strong thunderstorm electric field will seriously interfere with medium and short wave radio communication, and even temporarily interrupt communication. When there is a thunderstorm over the airport, heavy precipitation, poor visibility, sudden change of wind direction and gust have great influence on flight activities and ground equipment. Heavy precipitation, turbulence (including ascending and descending airflow), icing, thunder and lightning, hail and squall caused by thunderstorms have caused great difficulties in flight, which seriously led to the loss of control, damage and horsepower of the aircraft, directly endangering flight safety. )z！ K( u" K j) ]

Low cloud is one of the dangerous weather that endangers flight safety, and it will affect the landing of aircraft. When the airport is covered with low clouds, if the altitude of the plane from the ground is very low after the clouds leave and it is not aimed at the runway, it is often too late to correct it, which is easy to cause a go-around. Sometimes due to improper command or operation, it may also cause an accident in which the plane collides with an obstacle on the ground and stalls.

Low visibility has a considerable impact on the take-off and landing of aircraft. Rain, clouds, fog, sandstorm, floating dust, smoke and haze will reduce visibility and affect aviation safety. Poor visibility on the ground will easily lead to yaw and disorientation, which will affect the safe landing when landing, and it will endanger flight safety if it is not handled properly; When the route is foggy, it will affect the navigation of landmarks; When there is fog in the target area, it will have a serious impact on activities such as visual landmark flight, airdrop, photography and inspection.

Low-level wind shear is a serious threat to the take-off and landing of aircraft. Wind shear is a sudden and obvious change of wind direction and wind speed in a short distance. Strong wind shear will make the plane go around prematurely or be forced to go around. Under certain conditions, it will also lead to aircraft stall and uncontrollable danger, and even lead to flight accidents. 8 i5 V" X" ^- G7 K: f

Turbulence in the atmosphere and rapids in the air will both cause the plane to bump. Due to the irregular vertical movement of the air, the plane rises and sinks. Severe turbulence will increase the wing load, make the wing deform or even break, or make the plane sink or rise hundreds of meters. - h- I( Z P，I # C； t8 p

Ice is very dangerous for flying. Due to the accumulation of frost, the weight of the plane has increased. More importantly, it can be imagined that the plane crash is caused by the change of wing streamline, the imbalance of propeller blade weight, or the closure of carburetor intake pipe, the difficulty of retracting landing gear, the failure of radio antenna, the reduction of carburetor intake, the reduction of aircraft horsepower, the freezing of throttle, the cut-off of fuel source, the freezing of cockpit windows and doors, and so on. There are three forms of icing: clear ice, coarse ice and rime. Ming ice and Mao ice are the most dangerous. Because it is firm, hard to eliminate and grows extremely fast, it has become the most dangerous kind of ice accumulation. . c $ g & amp^: z(o .)% d

When adverse weather conditions occur, in order to ensure the safety of passengers and aircraft, airlines and air traffic control departments will regulate the take-off and landing of flights to varying degrees according to the weather changes, which will inevitably lead to flight delays and passengers stranded in and out of Hong Kong.

Strong convective weather mostly occurs in the cloud system formed by cumulonimbus clouds, and the rainfall range can be large or small. Sometimes it rains in the east and west, and sometimes it goes down from Hedong to Hexi. When strong convective weather (commonly known as thunderstorm) occurs, short-term heavy precipitation is often accompanied by severe weather such as thunderstorm, tornado and hail. It will cause great flight difficulties, which will seriously cause dangerous situations such as loss of control, damage and reduced horsepower. Strong electron current can cause lightning strike and damage radome, antenna, windshield and wing, while light electron current can cause aircraft body ablation. Strong bumps will cause structural deformation of the plane, of course, passengers in the plane are more dangerous; If there is a thunderstorm in flight, the aircraft strays into the cumulonimbus cloud or enters the heavy precipitation area, which will easily induce the engine to stop, make the wing and fuselage surface rough, increase the resistance, reduce the favorable angle of attack, reduce the lift and resistance, increase the stall speed, and seriously reduce the aerodynamic performance of the aircraft; If you enter a thunderstorm area during take-off and landing, you may encounter low-altitude wind shear under the influence of downdraft, and the aircraft will be difficult to control, easily lose its direction and even stall and fall.

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