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Electro-optic architecture (EOA) for sensors and actuators in aircraft propulsion systemsResults of a study to design an optimal architecture for electro-optical sensing and control in advanced aircraft and space systems are described. The propulsion full authority digital Electronic Engine Control (EEC) was the focus for the study. The recommended architecture is an on-engine EEC which contains electro-optic interface circuits for fiber-optic sensors on the engine. Size and weight are reduced by multiplexing arrays of functionally similar sensors on a pair of optical fibers to common electro-optical interfaces. The architecture contains common, multiplex interfaces to seven sensor groups: (1) self luminous sensors; (2) high temperatures; (3) low temperatures; (4) speeds and flows; (5) vibration; (6) pressures; and (7) mechanical positions. Nine distinct fiber-optic sensor types were found to provide these sensing functions: (1) continuous wave (CW) intensity modulators; (2) time division multiplexing (TDM) digital optic codeplates; (3) time division multiplexing (TDM) analog self-referenced sensors; (4) wavelength division multiplexing (WDM) digital optic code plates; (5) wavelength division multiplexing (WDM) analog self-referenced intensity modulators; (6) analog optical spectral shifters; (7) self-luminous bodies; (8) coherent optical interferometers; and (9) remote electrical sensors. The report includes the results of a trade study including engine sensor requirements, environment, the basic sensor types, and relevant evaluation criteria. These figures of merit for the candidate interface types were calculated from the data supplied by leading manufacturers of fiber-optic sensors.
Document ID
19930005927
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Glomb, W. L., Jr.
(United Technologies Research Center East Hartford, CT, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1989
Subject Category
Optics
Report/Patent Number
NAS 1.26:182270
UTRC-R89-927889
NASA-CR-182270
Accession Number
93N15116
Funding Number(s)
CONTRACT_GRANT: NAS3-25343
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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