Fast engine re-start for multi-engine system and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11859554
APP PUB NO 20230036374A1
SERIAL NO

17388308

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of operating a multi-engine system of an aircraft having first and second engines includes accumulating compressed air in a pressure vessel external to the engines, and operating the first and second engines asymmetrically, by controlling the first engine to operate in an active operating condition providing sufficient power and/or rotor speed for demands of the aircraft, and controlling the second engine to operate in a standby operating condition wherein the second engine produces less power output than the first engine. In response to a power demand request, the second engine is accelerated out of the standby operating condition by introducing therein compressed air from the pressure vessel at a location upstream of a combustor of the second engine.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
PRATT & WHITNEY CANADA CORP1000 MARIE VICTORIN LONGUEUIL QUÉBEC J4G 1A1

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beauchesne-Martel, Philippe Brossard, CA 45 182
Coutu, Daniel Longueuil, CA 18 19

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jul 2, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 2, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 2, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00