how does a helicoptor go higher?

Question

does this mean the propeler go faster if it want to go higher?

Answer 1

No they don't. To go higher, they have something called "collective control" a part called a swash plate assembly change the angle of both blades so it will increases or decreases lift thus allowing the helicopter lose or gain altitude.

Answer 2

Simply put, the rotors on a helicopter are basically the wings of an aircraft but they move to lift the aircraft instead of having a propeller to do the work. A wing of an aircraft needs to be moving to create lift. Once the right speed has been reached to create the lift, the rotor is a constant speed, to go higher, the rotor blades are tilted just like the elevator on an aircraft is tilted to either go up or down. The rotor blades are attached to a swash plate that does the tilting. To go faster, the blades are tilted at different angles. The blade that faces the front of the helicopter has a slight down pitch and the blade to the rear of the helicopter also has a pitch up attitude. to slow down the angles are reversed. Just like an aircraft that has a variable pitch propeller. Set the engine rpm to a constant, move the blue lever back and the plane will slow down, push the blue lever forward the plane goes faster. By pushing the lever forward, more lift is created on the propeller pulling the aircraft throug the air, pulling the lever decreases the lift.

Answer 3

No, increasing the pitch of the rotor blades produces more lift. Using the COLLECTIVE stick adjusts all the blades at the same time allowing the helicopter to rise or fall. The CYCLIC stick control the blades in sequence, changing the direction the helicopter flies in. And the rudder pedals adjust the tail rotor, turning the helicopter.

Answer 4

To gain altitude, the pilot would increase the pitch (angle) of the rotor blades. That would cause them to "bite into" the air more. The speed of the rotation is more or less constant. A helicopter works on the same principal as a screw being driven into a piece of wood. The rotors are the screw and the air is the wood. The rotors pull the helicopter into the air.

Answer 5

propellers generally and especially helicopter rotors have quite strict efficiency / RPM optimum. this means that they are best working at one specific RPM value, and with change in this cvalue the efficiency quickly decreases. more than that the helicopter rotor because of its mass has large rotary momentum that prevents the pilot from increasing the RPM rapidly - due to the engine torque limitations.

to climb you have to provide more lift. the lift still provided by the main rotor, by raising the collective control and increasing the pitch of rotor blades.
another chance for a dynamic climb with exchanging speed for altitude is the pulling of cyclics.when you do this proper way /proper speed of movement/ the helicopter raises its nose and starts to climb, too. You pay by your speed for the altitude and when zou want to climb constantly you have to eventually return to the raising of collective.
this cyclics maneuver is dangerous for some helicopters, like Mi 24 hind, because of its aerodynamic features. too rapid movement of the cyclics may cause the main rotor to cut away the tail boom while recovering the steep divce by the cyclics movement.

Answer 6

No. By raising the cyclic you increase the lift of the rotor (not propeller) by increasing the angle of attack. Same as with an aircraft wing. Pulling back on the stick increases the angle of attack and causes upward movement with a resulting lower forward speed.

Answer 7

they increase the collective pitch...(changes the angle of the rotor blades)