Hamilton Sundstrand Corporation

Rtx Corporation

Jung Muk Choe

Xin Wu

Thomas E Clark

Michael C Harke

Lei Xing

Bryan Kupferman

A fan is disposed at an intake of a nacelle, and a gas turbine is contained within a first portion of the nacelle. The gas turbine includes compressor, combustor, and turbine stages through which a core stream of gas passes past the fan and past the compressor, combustor, and turbine stages. A first heat exchanger is disposed in a second portion of the nacelle, where a fan stream passes through the second portion of the nacelle. A first switching valve receives gas from the fan stream and directs the received gas to a second switching valve or the turbine stage. The second switching valve directs gas to a boost compressor and receives gas from the first switching valve or a high pressure bleed from the compressor stage. A third switching valve receives gas from the boost compressor and directs compressed gas to the first heat exchanger or the turbine stage.

Boost compressor augmentation for hybrid electric thermal management systems

A method can include perturbing an electric motor of a hybrid powerplant having the electric motor and a fuel powered engine. The method can include measuring a frequency response of the powerplant due to the perturbing of the electric motor to determine a health of the powerplant and/or one or more components thereof.

Health diagnosis of hybrid powerplant

A motor drive system including a motor including two three-phase winding sets, wherein each three-phase winding set is connected a respective three-phase three-level inverter.

Growing community of inventors

Vernon, CT, United States of America

Jung Muk Choe