초록 ▼

A buffer system for cooling a buffer region 66 in the nacelle 14 of a gas turbine engine 12 after engine shutdown is disclosed. Various construction details are developed for positively providing cooling air after engine operation to the buffer region of the nacelle, such as with a blower means 74.

A buffer system for cooling a buffer region 66 in the nacelle 14 of a gas turbine engine 12 after engine shutdown is disclosed. Various construction details are developed for positively providing cooling air after engine operation to the buffer region of the nacelle, such as with a blower means 74. A coolable component 96, 98, 100, is disposed in the region. In one detailed embodiment, a shroud 72 extends about the buffer region and at least a portion of the coolable component is disposed in the shroud.

대표청구항 ▼

A buffer system for the nacelle of a turbofan gas turbine engine, which comprises: a nacelle wall extending circumferentially about the engine having an interior and an exterior, the nacelle wall having an opening in the nacelle wall for flowing air from the exterior of the nacelle to the interior;

A buffer system for the nacelle of a turbofan gas turbine engine, which comprises: a nacelle wall extending circumferentially about the engine having an interior and an exterior, the nacelle wall having an opening in the nacelle wall for flowing air from the exterior of the nacelle to the interior; a buffer region on the interior of the nacelle having a portion of at least one coolable component disposed therein; a passage for buffer air in flow communication with the opening in the nacelle wall and with the buffer region on the interior of the nacelle; and, means for positively moving air through said passage to the preselected buffer region after cessation of engine operation, said means including a source of energy which is not dependent on engine operation to supply energy after engine operation to enable operation of the means after the cessation of engine operation; wherein the buffer air region blocks air in the nacelle which is heated by the engine after engine operation from transferring heat by convection to said component.