Innoveering, LLC

General Electric Company

Jiaji Lin

George Papadopoulos

Daniel Bivolaru

Robert Bakos

Adelbert Francis

Stephen A Beckel

A shock wave detection system includes an optical sensor configured to generate a sensor signal based on the received laser light, a processor, and a memory. The memory includes instructions stored thereon, which when executed by the processor cause the system to: generate a sensor signal based on the laser light; perform a digital fast Fourier transform on the sensor signal; determine a power spectral density of the sensor signal based on the digital fast Fourier transform; determine a difference in a frequency content before, during, and after a shock wave transition event based on the power spectral density; and determine a passing of the shock wave based on the difference in the frequency content.

Shock wave detection systems and methods

A fluid properties sensing system includes an optical sensor which generates a sensor signal based on received laser light, a light source which transmits laser light through a transmitting fiber to a sensor head, a receiver that detects a portion of the laser light from a receiving fiber through an evanescent field of the transmitting fiber when the laser light radiates through a transmitting fiber wall of the transmitting fiber and interacts with a fluid medium at an interface of the sensor and the fluid medium, and a processor. The fibers are coupled at one end through the evanescent field to form the sensor head disposed in a flow field and to interact with the fluid medium. The processor identifies a change in the sensor signal based on a detected portion of the laser light resulting from an interaction of the sensor head with the fluid medium.

Evanescent field coupled shock wave detection systems and methods

This disclosure relates to systems and methods element identification and quantification. The method includes generating pulsed plasma based on an input voltage and a current so that the pulsed plasma interacts with a particle and atomizes the particle when the pulsed plasma is disposed in a flow field, identifying an atomic emission of the pulsed plasma with an optical sensor, determining element identification and quantification based on the identified emission of pulsed plasma, generating DC plasma having an electrical field based on an input DC voltage and a DC current, positioning the DC plasma in a flow field, detecting a change in the electrical field of the DC plasma, and determining a size of the particle based on the change in electrical field.

Plasma-based electro-optical sensing and methods

This disclosure relates to a system for actively controlling shock train in a high speed, air-breathing propulsion engine. The system includes an isolator, a sensor associated with the isolator, and a shock train fuel injector in electrical communication with the sensor. The sensor is configured to sense changes in pressure generated by a shock train in the isolator. The shock train fuel injector is in electrical communication with the sensor. The shock train fuel injector is configured to modulate fuel flow to the engine to control back pressure produced by the engine in response to predetermined pressure changes in the shock train.

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Flushing, NY, United States of America

Jiaji Lin