Gas-electric propulsion system for an aircraft
First Claim
1. A gas-electric propulsion system for an aircraft, the system comprising:
- a pair of jet engines suspended beneath a wing of the aircraft;
an electric powered boundary layer ingestion fan fixedly connected to a fuselage portion of the aircraft aft of a tail section; and
an electric generator coupled to at least one of the pair of jet engines and to the boundary layer ingestion fan, wherein the electric generator converts rotational energy from at least one jet engine of the pair of jet engines to electrical energy;
wherein the boundary layer ingestion fan is powered only by the electrical energy generated by the electric generator; and
wherein the boundary layer ingestion fan is configured to provide sufficient thrust to independently propel the aircraft.
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Abstract
In one aspect the present subject matter is directed to a gas-electric propulsion system for an aircraft. The system may include a turbofan jet engine, an electric powered boundary layer ingestion fan that is coupled to a fuselage portion of the aircraft aft of the turbofan jet engine, and an electric generator that is electronically coupled to the turbofan jet engine and to the boundary layer ingestion fan. The electric generator converts rotational energy from the turbofan jet engine to electrical energy and provides at least a portion of the electrical energy to the boundary layer ingestion fan. In another aspect of the present subject matter, a method for propelling an aircraft via the gas-electric propulsion system is disclosed.
152 Citations
24 Claims
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1. A gas-electric propulsion system for an aircraft, the system comprising:
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a pair of jet engines suspended beneath a wing of the aircraft; an electric powered boundary layer ingestion fan fixedly connected to a fuselage portion of the aircraft aft of a tail section; and an electric generator coupled to at least one of the pair of jet engines and to the boundary layer ingestion fan, wherein the electric generator converts rotational energy from at least one jet engine of the pair of jet engines to electrical energy; wherein the boundary layer ingestion fan is powered only by the electrical energy generated by the electric generator; and wherein the boundary layer ingestion fan is configured to provide sufficient thrust to independently propel the aircraft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 23)
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11. A gas-electric propulsion system for an aircraft, the system comprising:
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a turbofan jet engine; an electric powered boundary layer ingestion fan coupled to a fuselage portion of the aircraft, wherein the boundary layer ingestion fan is coupled to the fuselage downstream from a tail section of the aircraft; and an electric generator coupled to the turbofan jet engine and to the boundary layer ingestion fan, wherein the electric generator converts rotational energy from the turbofan jet engine to electrical energy; wherein the boundary layer ingestion fan is powered only by the electrical energy generated by the electric generator; and wherein the boundary layer ingestion fan is configured to provide sufficient thrust to independently propel the aircraft. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24)
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Specification