Electric-based secondary power system architectures for aircraft

On an aircraft having a fuselage and a jet engine configured to provide propulsive thrust, a system for providing conditioned air to the fuselage, the system comprising:

• means for providing outside air to a compressor fan in flow communication with the fuselage;
• means for extracting electric power from the jet engine;
• and
• means for providing at least a portion of the electric power to the compressor fan to flow the outside air from the compressor fan into the fuselage of the aircraft in the absence of bleed air from the jet engine.

An aircraft comprising:

• a fuselage having a passenger cabin;
• a jet engine configured to provide propulsive thrust to the aircraft;
• an electric generator operably coupled to the jet engine and configured to receive shaft power from the jet engine;
• an environmental control system including at least one compressor motor configured to receive electric power from the electric generator to provide outside air to the passenger cabin in the absence of bleed air from the jet engine;
• and
• a motor controller operably coupled to the electric generator to vary the electric power provided by the electric generator to the compressor motor based on the power demands of the environmental control system.