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Why is that helicopter has an inverted airfoil in the tail section?
Wiki User
∙ 11y ago
An inverted airfoil on the the horizontal stabilizer of an airplane will stabilize the aircraft along the horizontal axis in forward flight.
Wiki User
∙ 11y ago
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What does the tail rotor of a helicopter do?
it stabilises and steers the helicopter.
What is the revolving aerofoil used to provide lift or to control a plane in flight called?
I'm not entirely sure what you are trying to ask, but because of your usage of the term "revolving aerofoil," I will explain a simplified theory of operation of a standard helicopter to answer your question.The revolving Airfoil used to provide lift and most control of an aircraft would apply only to a Helicopter, because the revolving Main Rotor is the "wing" of this type of aircraft (as opposed to a non-rotary airfoil on a fixed-wing aircraft). Without getting into detail on the cyclic and collective controls that the pilot uses, let us just understand that the Airfoil rotates on the helicopter and when the pitch (the angle of the blade in respect to the flow of air) of the blades are increased, the main rotor will provide upward lift for the helicopter. Through the use of the pilot's controls, the blade pitch can be manipulated in such a way that the helicopter can be pitched forward or backward, and banked (rolled) to the left or the right, as well as providing upward lift. However, because of the torque generated by the rotation of the Main Rotor, the Tail Rotor is designed to counteract the tendency of the entire fuselage to spin opposite of the Main Rotor direction of rotation.In summation, the Main Rotor is a revolving airfoil that generates lift while also giving pitch and bank control to the helicopter. The Tail Rotorprovides yaw control. -APTech
When a helicopter tends to drift in the direction of tail rotor thrust it is called?
The tendency for a helicopter to drift in the direction of tail rotor thrust is called "Tail Rotor Drift" of "Translating Tendency".
How helicopter flies?
First you need to understand lift and how it is generated. If you do a google image search for "airfoil" you can see what it looks like. The top has a curve to it and the bottem is flat. As the airfoil passes through the air, lets say at a speed of 1, the air going over the top of the airfoil must travel at a higher rate of speed, maybe 1.5, that the air giong under the flat bottem. This is known as Bernoulli's Principle or lift. Now, if you take 2 or more long thin airfoils or blades and attach them to a center mast and provide a means for them to tilt and twist you have a basic rotor head of a helicopter. As the blades are spun through the air they create lift, much like if you have your hand out the car window. If you incrase the pitch of the blades by twisting them so the front edge goes up you get more lift and the helicopter goes up. If you tilt the blades to the left, fore example the helicopter will go left. Everything has an equal and opposite reaction. In this case if you turn the rotor blades to the left or counter clockwise the body of the helicopter (fusealage) will want to turn to the right. This is where the tail rotor comes into play. It pushes air to the left to keep the fusealage from turning. If you want to turn the helicopter to the left then you would incrase the pitch of the tail rotor blades to over come the twisting force of the helicopter. To turn to the right you would reduce the pitch of the tail rotor blades and let the helicopter twist agians the main rotor.
What makes a helicopter tailspin?
What do you mean by tail spin? How the blades turn? How the back of the helicopter turns?
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.
Why doesn't the body of the helicopter rotate in the opposite direction as A helicopter flies off its propeller rotating?
The tail propeller keeps the helicopter straight.
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
How does a helicopter turn?
By increasing or decreasing the speed of the tail rotors. This unbalances the torques acting on the helicopter and causes it to spin.
What helps a helicopter turn?
The tail propellor helps it turn
Why is it necessary to have the tail rotor on the helicopter that spins perpendicular to the spin of the main rotor?
"For every action there is an opposite and equal reaction." For the helicopter to make the blade move in one direction, the blade will try to make the helicopter move in the opposite direction. Since the blade tries to make the helicopter spin, something is needed to keep the helicopter from spinning. So the manufacturer puts a tail rotor on the helicopter.
What do pedals in a helicopter do?
The anti-torque pedals in a helicopter are used to keep the heli from rotating from the spin of the rotors (it controls the tail rotor)
