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Exposed to wind forces
- Loss of tail-rotor effectiveness (LTE) occurs when the tail rotor of a helicopter is exposed to wind forces that prevent it from carrying out its function—that of cancelling the torque of the engine and transmission. Any low-airspeed high-power environment provides an opportunity for it to occur.
en.wikipedia.org/wiki/Loss_of_tail-rotor_effectiveness
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Sep 28, 2015 · Yes, it is possible to make an emergency landing in a helicopter should a tail rotor failure occur. The procedure is that same as that of a engine failure and it's called an autorotative landing. Essentially a powerless helicopter becomes an autogyro (gyrocopter) in flight and can be flown as such.
Oct 29, 2020 · The tail rotor balances the forces generated from the main rotor and also allows the pilot to adjust the direction the nose is pointing when the chopper is hovering. Tail rotors are generally...
Oct 19, 2023 · This is why a helicopter is in serious trouble if its tail rotor is damaged. Furthermore, the tail rotor’s position and distance from the center of gravity of the chopper provides thrust in the same direction as the main rotor.
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Sep 26, 2022 · Tail rotor failures can be caused by a variety of malfunctions – complete stoppage of the working of the tail rotor for some reason, loss of a tail rotor blade, or separation of the tail rotor itself from the aircraft.
The tail rotor itself is a hazard to ground crews working near a running helicopter. For this reason, tail rotors are painted with stripes of alternating colors to increase their visibility to ground crews while the tail rotor is spinning.
Tail rotor thrust is mostly lost so that the helicopter starts spinning nose right. Adding left pedal doesn’t help; the turbulent air renders the tail rotor mostly ineffective. It’s worth noting that this flow condition around the tail rotor doesn’t have to be due to wind.
There are four main types of tail rotor or anti-torque systems on today’s helicopters. The most common is the multi-bladed rotor, the Fenestron from Airbus, the NOTAR from MD helicopters, then the helicopters with no tail rotor, like the chinook. Each counteracts the main rotor torque.
