Patent ID: 11905898
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC F  B  G | IPC B  F  G

Claim 8:
9. A system for starting a turbofan engine, the system comprising: a bus system; a storage device connected to the bus system, wherein the storage device stores program instructions; and a processor connected to the bus system, wherein the processor executes the program instructions to: receive first data inputs regarding factors influencing a time to departure for an aircraft; receive second data inputs regarding factors influencing time to start and set takeoff power for at least one turbofan engine on the aircraft, wherein the second data inputs include engine temperature, temperature and pressures at a compressor exit, and temperature and pressures at a compressor entrance; calculate an engine startup countdown, wherein the countdown is based on a comparison of a nominal time to departure with a nominal minimum time to start and set takeoff power for the turbofan engine, and wherein the nominal time to departure is based on the first data inputs and the nominal minimum time to start and set takeoff power is based on the second data inputs; upon completion of the engine startup countdown, send an engine start signal to an automated engine controller; initiate, by the automated engine controller, engine start of the turbofan engine in response to the start signal; and indicate a maximum allowed throttle position that can be set while the engines warm up to a temperature associated with set takeoff power.