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Tail rotor thrust is simple the sidewards force provided by the tail rotor. This is required to offset the gyroscopic motion created by the main rotor.
When the main rotor spins it creates toque in the opposite direction. The result, without a tail rotor, would be the main body of the helicopter spinning around in the opposite direction uncontrollably.
The tail rotor simply provide thrust in the opposite direction to this toque and thus allows the main body of the helicopter to remain stationary. The blades of both the main rotor and the tail rotor spin at the same revs. The pilot adjusts the pedals at his feet to change the amount of sidewards thrust thrust allowing him to control his lateral movement.
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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".
The rotor blade on the side of the helicopter that moving in the opposite direction?
The tail rotor is moving "perpendicular" to the main rotor, not "opposite". The tail rotor creates thrust opposite to the thrust of the main rotor, to keep the fuselage from spinning. Most helicopters spin the main rotor counter-clockwise looking from above, which puts a clockwise rotation on the fuselage. You need a tail rotor pushing the tail counter-clockwise to keep the fuselage pointed in the direction the pilot chooses.
Where is the thrust of a helicopter?
The main thrust is from the rotor downwards.
Why does a helicopter have two propellers?
The main rotor produces lift by re-directing the flow of air downward. Due to the torque created from spinning the main rotor, with just the main rotor the helicopter's fuselage (body) would rotate the opposite way until it reached a speed which was equal and opposite the torque/resistance. The tail rotor counteracts the torque on the main rotor by creating a similar re-direction of air. Therefore torque turns the aircraft one way and the tail rotors thrust turns it the other. To turn the opposite way as the blades rotate you simpily remove the tail rotor thrust. All helicopters need some means of generating this counter-force. There is a "Notar" (No Tail Rotor) which uses the Coanda effect to produce the counter-force.
How does a helicopter achieve thrust?
by tilting the rotor
What is a helicopter blade called?
the blade is called rotor bladesThe rotor blades on top are called Main Rotor Blades, because they are the main source of lift for the helicopter. The smaller rotor blades on the tail are called Tail Rotor Blades.
Why do the CH-47 Chinook helicopters have counter rotating rotor blades?
Most helicopters have a tail boom and tail rotor. This tail rotor is present to counteract the torque produced by a helicopters main rotor. If there was no tail rotor, the helicopter would tend to rotate in a direction opposite to that which the main rotor blade spins which would make flying difficult or even impossible. The Chinook doesn't have a tail rotor, instead it has twin main rotors. If they both span in the same direction then this would act to cause the helicopter to twist. However as they rotate in opposite directions the two twisting forces cancel each other out. This has other advantages as it means that the full power of the engines goes towards generating lift and thrust as opposed to driving the vertical stabilising rotor on other helicopters.
Why don't helicopters spin in circles?
The back rotor of the helicopter counters the force applied to the body of the helicopter by the main rotor by applying thrust in the same direction as the main rotor. The force from the main rotor is applied in the opposite direction the main rotor is spinning. So say the force the main rotor was exerting on the body of the helicopter was causing the tail to move left then the back rotor would be designed to apply an equal force pushing the tail right to keep it from spinning. If the back rotor of a helicopter malfunctioned it would begin to spin.
Why does a typical small helicopter with a single rotor have a second small rotor on its tail?
All helicopters have a tail rotor to stabilise them.
How does the function of the propeller differ in airplanes as opposed to helicopters?
Fixed wing aircraft use propellers for thrust only. A helicopter uses it's rotors for lift, thrust, and directional control. The tail rotor uses blade pitch to control yaw.
What is the purpose of the thrust wear down or low thrust oil pressure trip?
To prevent excessive axial movement of the rotor.
When the rotor moving he lost his weight why?
When the rotor on what was rotating, causing thrust in what direction, who lost weight? You answer my questions, I'll answer yours.
