초록

A ventilation system for a nacelle 14 is disclosed. The ventilation system includes pressure relief doors 50 and 52, and a holdback device 68 which blocks each open door from moving from the open position to the closed position.

대표청구항 ▼

A ventilation system for the nacelle of a gas turbine engine having a gas stream passing over the nacelle, which comprises: a nacelle wall member extending circumferentially about the engine and spaced from the engine leaving a nacelle compartment therebetween, the nacelle wall member having a press

A ventilation system for the nacelle of a gas turbine engine having a gas stream passing over the nacelle, which comprises: a nacelle wall member extending circumferentially about the engine and spaced from the engine leaving a nacelle compartment therebetween, the nacelle wall member having a pressure relief opening and adapted to engage a detent mechanism; a pressure relief door member disposed in said opening, the pressure relief door having an external surface adjacent said nacelle wall member bounding the gas stream, the door member being adapted to engage a detent mechanism; a hinged joint attached to the door member and the the nacelle wall member which is located upstream of the door member and substantially perpendicular to the flow such that the door member is movable from a closed position through an equilibrium position to an open position; a stop which engages the pressure relief door member and adjacent structure of the nacelle to prevent the door from moving past a predetermined point; a detent mechanism which includes a first element engaged by one of said member, the first element having interdental spaces, a second element engaged by the other of said members which is adapted to engage a detent, and, a detent, extending from the second element and disposed in the interdental spaces of the first element, the detent being adapted to slidably engage the first element as the pressure relief door is urged in the open direction from the closed position to the open position and being adapted to engage the first element as the door is urged in the closed direction from the open position to the closed position to block the pressure relief door from returning to the equilibrium position.