SYSTEM FOR SAFEGUARDING A MECHANICAL MULTIPLIER / REDUCER ASSEMBLY, PARTICULARLY OF THE 'TRANSMISSION BOX' TYPE OF HELICOPTER, IN CASE OF LUBRICATING OIL LOSS.

摘要

P The invention relates to a system for safeguarding a mechanical multiplier / gearbox assembly, in particular of the "gearbox" type of helicopter, in the event of loss of lubricating oil, which comprises an additional cooling system the enclosure of said mechanical assembly, with an inlet (1) and an outlet (2) disposed on the housing (3) of this mechanical assembly. The inlet (1) and the outlet (2) are closed during normal operation and they open under the action of a control device to a predetermined value of a parameter representative of the loss of lubricating oil this control device then simultaneously activating the additional cooling system, so that the coolant, having loaded the calories resulting from the heating caused by the loss of the lubricating oil, can evacuate them to the outside through the outlet (2) of the additional cooling system, which is of the air circulation type. BR/ Main application: Helicopters. / P