公开(公告)号：US11077957B2

公开(公告)日：2021-08-03

申请号：US15878075

申请日：2018-01-23

Applicant: Bell Helicopter Textron Inc.

Inventor： Thomas Dewey Parsons ,  David Haynes ,  David L. Miller ,  Bradley Robert Henson

IPC: B64D33/02 ,  F02C7/055

Abstract: An air intake system (AIS) has a plenum and an inlet barrier filter associated with the plenum, through which air can selectively enter the plenum. The AIS also has an inlet duct associated with the plenum, through which air can selectively enter the plenum. The AIS also has a bypass door associated with the inlet duct, the bypass door being configured to selectively change an amount of air allowed to pass through the inlet duct. The AIS also has a filter airflow change device configured to change an amount of airflow allowed through the inlet barrier filter.

公开(公告)号：US20180208323A1

公开(公告)日：2018-07-26

申请号：US15878075

申请日：2018-01-23

Applicant: Bell Helicopter Textron Inc.

Inventor： Thomas Dewey Parsons ,  David Haynes ,  David L. Miller ,  Bradley Robert Henson

IPC: B64D33/02

CPC classification number: B64D33/02 ,  B64D2033/0246 ,  F02C7/055 ,  F05D2220/323 ,  F05D2220/90 ,  F05D2260/606

Abstract: An air intake system (AIS) has a plenum and an inlet barrier filter associated with the plenum, through which air can selectively enter the plenum. The AIS also has an inlet duct associated with the plenum, through which air can selectively enter the plenum. The AIS also has a bypass door associated with the inlet duct, the bypass door being configured to selectively change an amount of air allowed to pass through the inlet duct. The AIS also has a filter airflow change device configured to change an amount of airflow allowed through the inlet barrier filter.