Dynamic flight command cross-feed for rotor speed droop reduction
First Claim
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1. A method of flying an aircraft, comprising:
- receiving a control input at a control system of the aircraft;
determining a flight command indicated by the control input;
computing a torque response at a motor of the aircraft to the flight command for a selected air density and altitude of the aircraft;
determining an amount of fuel required at the motor in order to reduce a rotor droop associated with the torque response when executing the flight command at the aircraft;
determining a fuel flow to the motor based on motor parameters,executing the determined flight command at the aircraft; and
supplying fuel to the motor of the aircraft to reduce the rotor droop while executing the flight command, wherein the fuel supplied to the motor is a sum of the fuel flow determined by the engine controller and the amount of fuel for reducing rotor speed droop determined by the processor.
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Abstract
An aircraft and method of flying an aircraft are disclosed. The aircraft includes a cross-feed unit that receives a flight command for the aircraft and determines an amount of fuel for a motor of the aircraft in order to reduce a droop in the aircraft when executing the flight command at the aircraft. A fuel injector or fuel supplier provides the determined amount of fuel to the motor when the flight command is executed at the aircraft.
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Citations
14 Claims
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1. A method of flying an aircraft, comprising:
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receiving a control input at a control system of the aircraft; determining a flight command indicated by the control input; computing a torque response at a motor of the aircraft to the flight command for a selected air density and altitude of the aircraft; determining an amount of fuel required at the motor in order to reduce a rotor droop associated with the torque response when executing the flight command at the aircraft; determining a fuel flow to the motor based on motor parameters, executing the determined flight command at the aircraft; and supplying fuel to the motor of the aircraft to reduce the rotor droop while executing the flight command, wherein the fuel supplied to the motor is a sum of the fuel flow determined by the engine controller and the amount of fuel for reducing rotor speed droop determined by the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An aircraft, comprising:
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a control system that provides a flight command to the aircraft for execution of the flight command in response to a command input; a processor of the control system that computes a torque response at a motor of the aircraft to the flight command for a selected air density and altitude of the aircraft and determines an amount of fuel for the motor for reducing rotor speed droop associated with the torque response when executing the flight command at the aircraft; an engine controller that determines a fuel flow to the motor based on motor parameters; and a fuel supplier that provides the determined amount of fuel to the motor when the flight command is executed at the aircraft, wherein the determined amount is a sum of the fuel flow determined by the engine controller and the amount of fuel for reducing rotor speed droop determined by the processor. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification