Diode laser sensors for aeropropulsion monitoring and control

Mark G. Allen; William J. Kessler; Daniel A. Palombo; David M. Sonnenfroh

doi:10.1117/12.210505

30 May 1995 Diode laser sensors for aeropropulsion monitoring and control

Mark G. Allen, William J. Kessler, Daniel A. Palombo, David M. Sonnenfroh

Author Affiliations +

Proceedings Volume 2494, Sensing, Actuation, and Control in Aeropropulsion; (1995) https://doi.org/10.1117/12.210505
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

Recent advances in room-temperature tunable diode lasers, fiberoptic beam transport, and sensitive detection strategies now permit in-stream sensing of numerous parameters relevant to aeropropulsion monitoring and control. These include density measurements of important flow constituents such as O₂, H₂O, CO₂, and NO_x. Based on path-averaged absorption measurements, the basic density measurements can be expanded to include other gasdynamic properties such as temperature and velocity. Simultaneous, multiparameter measurements allow determination of high order system parameters such as mass flux and thrust continuously and in real-time. This paper describes several sensor development efforts, exhaust mass flux, and emissions monitoring. Example measurements from laboratory configurations are presented along with performance projections for test-stand and flight systems. Integration issues with full-scale hardware and control opportunities are also discussed.

Citation Download Citation

Mark G. Allen, William J. Kessler, Daniel A. Palombo, and David M. Sonnenfroh "Diode laser sensors for aeropropulsion monitoring and control", Proc. SPIE 2494, Sensing, Actuation, and Control in Aeropropulsion, (30 May 1995); https://doi.org/10.1117/12.210505

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