| 摘要 |
The invention relates to a retractable landing gear, especially for a helicopter, including an elastic leg consisting of a damping chamber and of a sliding rod equipped with a stub axle, as well as an operating jack. In accordance with the invention, an additional energy-absorption device (150), with force threshold, is built into the operating jack (108), in such a way that the said jack applies a predetermined torque tending to keep the leg of the gear in a substantially vertical position, while allowing the retraction of the said gear with a controlled force in the event of an emergency landing; moreover, the stub axle (106) is offset with respect to the axis of the elastic leg in such a way that a vertical force exerted on the gear leg (101) generates a torque tending to retract the said gear, the latter torque, however, remaining less than the said predetermined holding torque in the normal landing situation. <IMAGE>
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