公开(公告)号：US11117677B2

公开(公告)日：2021-09-14

申请号：US15964774

申请日：2018-04-27

Applicant: DONALDSON COMPANY, INC.

Inventor： Mark E. Boyce ,  Matthew A. Brown

IPC: B64D33/02 ,  B01D46/00 ,  B64D45/00 ,  B64D27/02 ,  G01N15/08 ,  F02C7/052 ,  F02C7/05 ,  B64C27/04

Abstract: A system and method of compensating for airspeed when measuring pressure drop across a filter system on an aircraft may include a pressure compensator, an internal pressure sensor, and an external pressure sensor. A filter media may be located around a housing such that air flows through the filter media into a clean air space defined by the filter media and the housing. The pressure compensator may be located outside of the clean air space and within an airstream of the aircraft. The internal pressure sensor may be configured to measure an internal pressure that varies with airspeed and the external pressure sensor may be located on the pressure compensator to measure an external pressure. The external pressure sensor may be positioned such that the external pressure varies according to a known relationship relative to the internal pressure as the airspeed of the aircraft changes.

公开(公告)号：US20180312270A1

公开(公告)日：2018-11-01

申请号：US15964774

申请日：2018-04-27

Applicant: DONALDSON COMPANY, INC.

Inventor： Mark E. Boyce ,  Matthew A. Brown

IPC: B64D33/02 ,  B01D46/00 ,  B64D45/00 ,  B64D27/02 ,  G01N15/08

CPC classification number: B64D33/02 ,  B01D46/0068 ,  B64C27/04 ,  B64D2033/0246 ,  F02C7/05 ,  F02C7/052

Abstract: A system and method of compensating for airspeed when measuring pressure drop across a filter system on an aircraft may include a pressure compensator, an internal pressure sensor, and an external pressure sensor. A filter media may be located around a housing such that air flows through the filter media into a clean air space defined by the filter media and the housing. The pressure compensator may be located outside of the clean air space and within an airstream of the aircraft. The internal pressure sensor may be configured to measure an internal pressure that varies with airspeed and the external pressure sensor may be located on the pressure compensator to measure an external pressure. The external pressure sensor may be positioned such that the external pressure varies according to a known relationship relative to the internal pressure as the airspeed of the aircraft changes.