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I will assume by "sets" you mean "pairs". The truth is, some helicopters only have one set. Some have two. Put very simply, the more blades you have, the more lift you can generate, and so the more hauling capacity you have. Eg the Chinook has TWO rotors, each with four blades. It's used to lift some very heavy objects (humvees, many personnel etc). Whereas a small R22 only has two blades, since it's not designed to be a cargo lifter. The Main rotor is generally the one that is the most forward and creates most of the lift and general directional control (forward, back, left and right banks) Where as the tail rotor provides for a counter force to the torque created by the main rotor and also give you the ability to do what is called a balanced turn (means you won't feel like you're sliding through the air)
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∙ 14y ago
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Why do helicopters always have a set of two blades?
Helicopters have 2 sets of blades to keep the helicopter balanced. This is due to the unique shape of the helicopter.
What is a helicopter with two sets of blades called?
That is a twin rotoe helicopter
What do you call a helicopter with 2 big blades?
A Helicopter - the number of blades is irrelevant. On a side note - what keeps a helicopter in the air? It's so ugly the earth repels it!
How many blades does fastest helicopter have?
Helicopters created nowadays generally have 2 or 3 blades. The fastest recorded helicopter has 3 blades. as it revolves more pressure is put forth and therefore the helicopter travels faster
How many rotors does the helicopter have?
Helicopter can have 2 blade, 4 Blade, 6 Blade, 8 Blades. Selection of this Blades depends up on the Power Rating. For a small 2 Ton H/C, it can have 2 Blades. 5 Ton H/C can have 4 Blades etc..
What is on top of a helicopter?
Rotor blades are on top of a helicopter.
What is the blades on a helicoptor called?
The blades on a helicopter are called rotor blades. They are attached to the rotor mast and rotate to provide lift and control for the helicopter.
How is a helicopter different from an airplane?
A helicopter has rotor blades and an airplane does not.
Can helicopter blades be called wings?
No, they are correctly called 'rotor blades'
how do helicopter flie?
the big blades
What is the rolor on a helicopter?
The rotor is the hub and main blades on top of every helicopter.
What is a helicopter blade held on with?
Helicopter Blades are bolted onto the main rotor
