FAST ENGINE RE-START FOR MULTI-ENGINE SYSTEM AND METHOD

ABSTRACTA method of operating a multi-engine system of an aircraft having first andsecondengines includes accumulating compressed air in a pressure vessel external totheengines, and operating the first and second engines asymmetrically, bycontrolling thefirst engine to operate in an active operating condition providing sufficientpower and/orrotor speed for demands of the aircraft, and controlling the second engine tooperate ina standby operating condition wherein the second engine produces less poweroutputthan the first engine. In response to a power demand request, the secondengine isaccelerated out of the standby operating condition by introducing thereincompressedair from the pressure vessel at a location upstream of a combustor of thesecondengine.Date Recue/Date Received 2022-07-14