Device for folding/unfolding a tail boom of a rotorcraft, an associated rotorcraft, and a corresponding folding/unfolding method
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United States of America Patent
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Apr 3, 2018
Issued Date -
N/A
app pub date -
Mar 29, 2016
filing date -
Mar 31, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A folding/unfolding device for folding/unfolding a tail boom, the device being arranged in association with a rear power transmission shaft of a tail rotor of the rotorcraft, the folding/unfolding device comprising pivot means enabling a movable portion of the tail boom to move in pivoting relative to a stationary portion of the tail boom, the relative pivoting movement being performed between two distinct extreme positions, namely an unfolded, working position enabling the rear power transmission shaft to transmit driving torque to the tail rotor, and a folded, rest position enabling the overall length of the rotorcraft to be reduced. According to the invention, the folding/unfolding device includes motor-driven decoupling/coupling means for mechanically decoupling/coupling together two portions of a single rear power transmission shaft before/after the relative pivoting movement of the movable portion of the tail boom relative to the stationary portion.
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