Patent ID: 11919654
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 16:
17. A method of feeding air to a compressor of an aircraft engine, the method comprising:
receiving a flow of ambient air within an annular inlet duct via a duct inlet;
flowing a first portion of the flow within a first section of the annular inlet duct and flowing a second portion of the flow within a second section of the annular inlet duct;
exposing a first face of a flow restrictor contained within the annular inlet duct to a first air pressure of the first portion and exposing a second face of the flow restrictor opposed to the first face to a second air pressure of the second portion;
moving the flow restrictor in one of a first circumferential direction and a second circumferential direction as a result of a pressure difference between the first air pressure and the second air pressure; and
flowing the first portion and the second portion towards the compressor of the aircraft engine.