What angle are helicopter blades set at?

Question

What angle are helicpoter propeller blades set at so that it lifts of the ground?

Answer 1

It's variable, depending on the total weight of the helicopter, which includes fuel, crew, cargo, and passengers, as well as a lot of atmospheric variables.

Answer 2

A helicopter blade's profile is actually the shape of a long thin wing, and it produces lift in the same way. The higher the angle of attack, the more lift that is produced. A turbine helicopter's rotor always turns at the same rpm once it's at flight idle (100%). As the pilot raises the collective, the blade's angle increases and the rotor disk produces more lift. The engine fuel control will automatically increase fuel flow to maintain the rotor speed at 100%. When the lift exceeds the weight of the helicopter, it will begin to rise up.

Answer 3

The angle of the rotor blades is known as pitch. The amount of pitch required to take off has many variables. Surface area of the blade, wieght of the aircraft, and alttitude of take off point to name a few. When the collective stick is raised or lowered it changes the pitch of the blades to raise or lower the aircraft.

Answer 4

The pitch is not fixed, the rotor's speed is set at a specific RPM and stays constant and as you pull up on the collective handle the pitch angle will increase giving you lift.

Answer 5

helicopter blades can change their angle of attack all at the same way (collective), and everyone change indipendently its angle of attack during each turn (cyclic)

Answer 6

they are not set solid but the pitch is altered to cope with cargo, direction, wind etc

Answer 7

3 Deg' to the horizontall.

Answer 8

.......... they are variable ..................... depends on the requirement of the phase of flight .....................