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What is the reason for a maximum rotor RPM with power on in a helicopter?
Wiki User
∙ 14y ago
Flying a helicopter is a delicate balance of Rotor RPM and Rotor Torque. Too little RPM and it would lose lift. Too much RPM, then the centrifugal forces could damage the rotor blades. When the pilot adds Collective input to climb, the Rotor Torque could be exceeded and result in failure of the mast. Each flight restriction was based upon the design of the helicopter's mast, blades and grip.
Also, if the RPMs are too high the tips of the blade will hit the sound barrier and vibrate out of control. A helicopter with a blade length of 30 ft (radius) will only have to be spinning at around 330 RPMs to reach the sound barrier.
Wiki User
∙ 14y ago
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What should be the maximum RPM of helicopter rotor?
That depends on type of helicopter
What is a helicopter with 2 propelers?
That is a twin rotor helicopter
What does the tail rotor of a helicopter do?
it stabilises and steers the helicopter.
What is on top of a helicopter?
Rotor blades are on top of a helicopter.
Where was the helicopter rotor made?
The helicopter was made in China.
Another name for helicopter propelers?
Main rotor and tail rotor. The main rotor is on top of the helicopter consisting of two or more blades, and the tail rotor is at the back of the helicopter, which also consists of two or more blades.
What are the major parts of a helicopter?
It's main rotor, tail rotor makes the helicopter to move which is powered by it's engine. These are the major parts of a helicopter
What is a blade from a helicopter in words?
The main blade on a helicopter is the 'rotor'
How is a helicopter different from an airplane?
A helicopter has rotor blades and an airplane does not.
How does a helicopters rotor blades make the helicopter turn left and right?
By adjusting the speed of tail rotor, which points to the side, the pilot can turn the helicopter in flight. The main upper rotor actually plays only a minor part in making helicopter turn. The part supplying most of the control is the tail rotor. Because the main rotor is spinning in one direction, without a tail rotor, the body of the helicopter would spin around in circles in the opposite direction. The reason for this is explained in the first part of Newton's third law of motion: for every action there is an equal and opposite action. The torque generated to make the rotor turn also exerts torque on the body of the helicopter "willing" it to spin the opposite direction. However, the tail rotor spins, pushing air to the side. This creates force in the opposite direction, keeping the helicopter stable. By simply adjusting the speed of the tail rotor, the helicopter can be turned in flight.
What is the second rotor on a helicopter for?
The small rotor on the tail is to counter-act the torque of the big rotor on top. So it is used for steering and to keep the helicopter stable.
How many wings does a helicopter have?
Helicopters do not have any wings. Airplanes have wings Helicopter has rotors. A helicopter has at least two sets of rotors. One rotor creates lift ( Main Rotor on the top ) & the other prevents the helicopter from spinning in circles( Tail Rotor).
