HELICOPTER ENGINE COMPARTMENT VENTILATING SYSTEM

摘要

A helicopter engine compartment ventilating system includes an ejector nozzle,four airscoops, two air plenums and two air slots. The ejector nozzle encompasses theengine exhaustpipe mouth and downstream flow of exhaust gas for drawing air into, throughand out of theengine compartment. Two air scoops are affixed to the helicopter fuselage atthe forwardperimeter of the engine compartment for supplying air to the two air plenumsthat direct theair through the engine and transmission oil heat exchangers into the enginecompartment.Two additional air scoops are attached to the upper forward perimeter of theenginecompartment for supplying air to the upper area of the engine compartment. Theair slots arelocated at the forward edge of each engine compartment door for allowing airto be drawninto the midsection of the engine compartment.