Can a class 9 gale helicopter fly?

Can't fly. When the wind reaches level 4, the helicopter cannot take off.

Five winds that affect the flight of aircraft;

The wind blowing towards the plane. Most planes take off or land against the wind because the headwind will increase the lift.

Downwind, the wind blowing from the back of the plane. Downwind will reduce lift, and airplanes usually avoid taking off or landing with downwind.

A crosswind, a wind blowing from the side. If the plane encounters a sudden change in crosswind when landing, it may deviate from the center line of the runway.

Wind shear refers to the change of buoyancy caused by the change of headwind or tailwind that lasts for more than a few seconds. The decrease of buoyancy will cause the plane to deviate downward and fall below the predetermined flight path.

Turbulence is caused by the rapid and irregular flow of the atmosphere. It makes the plane bumpy, and in severe cases, the plane may temporarily lose control.

Extended data

Several take-off modes of helicopters;

vertical take-off

Vertical takeoff is a process in which a helicopter hovers from the vertical ground to a certain height and then climbs along a certain trajectory to increase its speed. The climbing height depends on the height of the surrounding obstacles. Generally speaking, the height above the ground during takeoff is about 20-30m, which is close to its economic speed. According to different specific conditions, helicopters can adopt two different vertical take-off modes.

Taxi takeoff

When the helicopter load is too large or the meteorological conditions such as airport elevation make it impossible for the helicopter to take off vertically, it can take off by taxiing like a fixed-wing aircraft.