公开(公告)号：US20200284192A1

公开(公告)日：2020-09-10

申请号：US16294266

申请日：2019-03-06

Applicant: Bell Helicopter Textron Inc.

Inventor： David HAYNES ,  Thomas Dewey PARSONS ,  Shahryar FOTOVATI

IPC: 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.

公开(公告)号：US20200231293A1

公开(公告)日：2020-07-23

申请号：US16251562

申请日：2019-01-18

Applicant: Bell Helicopter Textron Inc.

Inventor： Thomas Dewey PARSONS ,  Alan Hisashi STEINERT

IPC: B64D27/14 ,  B64C29/00 ,  B64D33/02

Abstract: An exemplary convertible engine includes an engine housing forming a fan duct extending from a fan inlet to an exhaust; a fan positioned in the fan duct proximate the fan inlet; an engine core located in the fan duct aft of the fan, the engine core coupled to the fan by a fan shaft; a drive shaft mechanically coupled to the engine core and extending exterior of the engine housing; and a dedicated core inflow duct coupled to the core and having a core inlet to capture and direct air into the engine core. An inlet barrier filter may be located in the dedicated core inflow duct. The core inlet may be located inside of the fan duct or exterior to the fan duct. A gearbox may be operationally connected to the fan shaft and may be located inside of the fan duct.