公开(公告)号：US11242798B2

公开(公告)日：2022-02-08

申请号：US16294266

申请日：2019-03-06

Applicant: Bell Textron Inc.

Inventor： David Haynes ,  Thomas Dewey Parsons ,  Shahryar Fotovati

IPC: F02C7/04 ,  F02C7/047 ,  B64C27/28 ,  B64D33/02 ,  B64C29/00

Abstract: An aircraft includes a fuselage and an engine housed in the fuselage. A ram-air engine inlet is formed on an exterior of the fuselage. The ram-air engine inlet is defined, at least in part, by a cowling door. The cowling door is moveable between a closed position and an open position. An intake duct fluidly couples the ram-air engine inlet to the engine. A filter is disposed across the intake duct. A bypass duct is formed in the ram-air engine inlet aft of the intake duct. The bypass duct is operable to be selectively opened and closed.