公开(公告)号：US10352189B2

公开(公告)日：2019-07-16

申请号：US15591696

申请日：2017-05-10

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain Lamarre ,  Pierre Alexandre

IPC: F02C7/26 ,  F02C9/28 ,  B64D27/16 ,  F01D19/00

Abstract: Herein provided are methods and systems for setting an acceleration schedule for engine start of a gas turbine engine. A rotational acceleration measurement of the engine after the engine is energized in response to a start request is obtained. The rotational acceleration measurement of the engine is compared to an acceleration band having a maximum threshold and a minimum threshold. An acceleration schedule is determined based on a position of the rotational acceleration measurement of the engine in the acceleration band.

公开(公告)号：US11131211B2

公开(公告)日：2021-09-28

申请号：US16433280

申请日：2019-06-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain Lamarre ,  Pierre Alexandre

IPC: F01D19/00 ,  F02C7/26 ,  F02C9/28 ,  B64D27/16

Abstract: Herein provided are methods and systems for setting an acceleration schedule for engine start of a gas turbine engine. A rotational acceleration measurement of the engine is obtained after the engine is energized in response to a start request. The rotational acceleration measurement of the engine is compared to a threshold value within an acceleration band having a maximum threshold and a minimum threshold. An acceleration schedule is determined based on a position of the rotational acceleration measurement of the engine in the acceleration band relative to the threshold value.

公开(公告)号：US20190284953A1

公开(公告)日：2019-09-19

申请号：US16433280

申请日：2019-06-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain LAMARRE ,  Pierre Alexandre

IPC: F01D19/00 ,  F02C9/28 ,  F02C7/26 ,  B64D27/16

Abstract: Herein provided are methods and systems for setting an acceleration schedule for engine start of a gas turbine engine. A rotational acceleration measurement of the engine is obtained after the engine is energized in response to a start request. The rotational acceleration measurement of the engine is compared to a threshold value within an acceleration band having a maximum threshold and a minimum threshold. An acceleration schedule is determined based on a position of the rotational acceleration measurement of the engine in the acceleration band relative to the threshold value.

公开(公告)号：US10801416B2

公开(公告)日：2020-10-13

申请号：US15585847

申请日：2017-05-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain Lamarre ,  Jeremie Hebert ,  Pierre Alexandre

IPC: F02C9/28 ,  F02C7/26 ,  F02C9/44 ,  B64D31/06

Abstract: Herein provided are methods and systems for setting a fuel flow schedule for starting a gas turbine engine of an aircraft. Aircraft speed and engine rotational speed are obtained. A compressor inlet recovered pressure is estimated by combining a first component influenced by the aircraft speed and a second component influenced by the engine rotational speed, and a fuel flow schedule is selected for engine start in accordance with the estimated compressor inlet recovered pressure.

公开(公告)号：US20180328220A1

公开(公告)日：2018-11-15

申请号：US15591696

申请日：2017-05-10

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain LAMARRE ,  Pierre Alexandre

IPC: F01D19/00 ,  F02C7/26 ,  B64D27/16

CPC classification number: F01D19/00 ,  B64D27/16 ,  F02C7/26 ,  F02C9/28 ,  F05D2220/323 ,  F05D2260/85 ,  F05D2270/04

Abstract: Herein provided are methods and systems for setting an acceleration schedule for engine start of a gas turbine engine. A rotational acceleration measurement of the engine after the engine is energized in response to a start request is obtained. The rotational acceleration measurement of the engine is compared to an acceleration band having a maximum threshold and a minimum threshold. An acceleration schedule is determined based on a position of the rotational acceleration measurement of the engine in the acceleration band.

公开(公告)号：US20180320600A1

公开(公告)日：2018-11-08

申请号：US15585847

申请日：2017-05-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sylvain LAMARRE ,  Jeremie HEBERT ,  Pierre Alexandre

IPC: F02C9/28 ,  F02C7/26 ,  B64D31/06

Abstract: Herein provided are methods and systems for setting a fuel flow schedule for starting a gas turbine engine of an aircraft. Aircraft speed and engine rotational speed are obtained. A compressor inlet recovered pressure is estimated by combining a first component influenced by the aircraft speed and a second component influenced by the engine rotational speed, and a fuel flow schedule is selected for engine start in accordance with the estimated compressor inlet recovered pressure.