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There are a total of 5 record(s) matching your query.
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Optical techniques for determination of normal shock position in supersonic flows for aerospace applications
Author(s): Adamovsky, Grigory; Eustace, John G.
Abstract: Techniques for the quantitative determination of shock position in supersonic flows using direct and indirect methods is presented. A description of an experimental setup is also presented, different configurations of shock ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2007-05-31
Accession Number: 90N25323; Document ID: 19900016007; Report Number: E-5599, NAS 1.15:103201, NASA-TM-103201
RF modulated fiber optic sensing systems and their applications
Author(s): Adamovsky, Grigory; Eustace, John G.
Abstract: A fiber optic sensing system with an intensity sensor and a Radio Frequency (RF) modulated source was shown to have sensitivity and resolution much higher than a comparable system employing low modulating frequencies or DC ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 92N33896; Document ID: 19920024652; Report Number: E-7231, NAS 1.15:105801, NASA-TM-105801
Fiberoptic sensing technique employing RF modulated interferometry
Author(s): Eustace, John G.; Coghlan, Gregory A.; Yorka, Christian M.; Carome, Edward F.; Adamovsky, Grigory
Abstract: A detection technique for intensity type fiberoptic sensors is described. It employs a multimode fiber interferometer, with the sensor in one arm, excited by an LED modulated at RF frequencies f(o) and 2f(o). Sensor induced ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 93A53110; Document ID: 19930069113
Optical techniques for determination of normal shock position in supersonic flows for aerospace applications
Author(s): Adamovsky, Grigory; Eustace, John G.
Abstract: Techniques for the quantitative determination of shock position in supersonic flows using direct and indirect methods is presented. A description of an experimental setup is also presented, different configurations of shock ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2004-11-03
Accession Number: 91A55530; Document ID: 19910070907
Wavelength-multiplexed fiber-optic position encoder for aircraft control systems
Author(s): Beheim, Glenn; Krasowski, Michael J.; Sotomayor, Jorge L.; Fritsch, Klaus; Flatico, Joseph M.; Bathurst, Richard L.; Eustace, John G.; Anthan, Donald J.
Abstract: NASA-Lewis has developed wavelength-multiplexed digital position fiber-optics transducers for use in aircraft control systems. A prototype LED-powered rotary encoder for a commercial aircraft turbofan engine is under ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 92A42602; Document ID: 19920059978
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