Questions tagged [tail-rotor]
The tail rotor is a smaller rotor mounted at the end of a helicopter's tail.
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What is the main rotor speed (RPM) of Sikorsky CH-53E Super Stallion?
In order to calculate the tip speed ($V_{tip} = ω×R$) of Sikorsky CH-53E Super Stallion, I need to find the rotation speed of the main rotor for the forward flight case. Can someone provide an answer ...
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How does a Delta-3 hinge on a helicopter tail rotor work?
I am trying to understand how adding offset hinges would provide a self-feathering force. Does anyone have more information on Delta hinges on helicopters? I am a bit confused with the information I ...
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Why do helicopters need two pedals? Why is one not enough?
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Why do helicopters have two pedals (as shown in the picture); why is one not enough? As we know, the pedals provide directional control through the tail rotor, to yaw left or right. As ...
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What is the main and tail rotor speed (RPM) for a Sikorsky S52?
I need the RPMs for the main and tail rotor of a Sikorsky S52 for the research I am doing for my degree. I tried checking flight manuals and other websites, but I don't find concrete numbers, only ...
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Why can the rear rotors of helicopters move freely in this direction?
As you can see in the video in the imgur link below i recorded a video of the Alouette 2 rear tail rotor and as you can see it moves freely in that direction. Why does it freely move in that ...
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Helicopter mast bumping in low g condition
The helicopter shown in the concrete pouring video seems to taking off from a hill and descending down in a way which can be classified as low G with low rotor loading. Although, the helicopter is ...
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For a coaxial rotorcraft, Do horizontal and vertical stabilizers in the tail really make much of a difference?
Can we design a coaxial rotorcraft without tail and tail boom completely? What might be the consequences?
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Why is the UH-60 tail rotor canted?
The Sikorsky UH-60 (S-70) has a tail rotor that is canted 20 degrees upwards. Why is that?
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What factors govern the placement of a helicopter's tail rotor (left or right)?
An image search for 'helicopter' indicates that there isn't a consensus on whether to place the tail rotor to the left or the right of the tail boom, although I'm believe there may be a bias for left.
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How much force does a helicopter's tail rotor counteract?
How much force does a helicopters tail rotor counteract?
What are the formulas for determining this? How much rotational torque is produced by spinning the blades?
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What are the benefits of a non-orthogonal (scissor) tail-rotor?
Why is the tail-rotor of some helicopters (e.g., Boeing AH-64 Apache) made of non-orthogonal (scissor) blades?
What are the aerodynamic benefits (or any other benefits) compared to the orthogonal ...
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Does shutting down the engine affect the rate of rotation during autorotation?
If a helicopter's tail rotor shears off while flying then the helicopter's fuselage will start rotating in the direction opposite to the main rotor's rotation direction. During autorotation, if I ...
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Why do No Tail Rotor (NOTAR) helicopters use an enclosed variable pitch fan?
Aerotécnica AC-14 was an early no tail rotor prototype which used the ducted exhaust from the turboshaft to counter the torque of the main rotor. The concept seems simple with few moving parts.
It ...
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Can a helicopter fly without a tail rotor? [duplicate]
Just wondering if a helicopter can fly without a tail rotor?
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