Diode laser sensors for aeropropulsion testing and control

New sensor concepts base don rapidly tunable, room- temperature diode laser absorption are being developed for a variety of aeropropulsion testing and control applications. The sensors are compact, rugged, capable of remote operation, and sensitive to a number of important control parameters. This paper describes recent progress in the development of three specific sensor platforms: inlet air mass flux for in-flight aeroengine control; simultaneous density, temperature, and velocity measurements in high- speed propulsion test facilities; and multi-species emissions monitoring. The measurement principles and system architectures are reviewed, along with sample laboratory and field test data.

[1]  William J. Kessler,et al.  Diode laser-based air mass flux sensor for subsonic aeropropulsion inlets , 1996 .

[2]  V. M. Devi,et al.  THE HITRAN MOLECULAR DATABASE: EDITIONS OF 1991 AND 1992 , 1992 .

[3]  M. P. Arroyo,et al.  Absorption measurements of water-vapor concentration, temperature, and line-shape parameters using a tunable InGaAsP diode laser. , 1993, Applied optics.

[4]  J. A. Silver,et al.  Frequency modulation and wavelength modulation spectroscopies: comparison of experimental methods using a lead-salt diode laser. , 1992, Applied optics.

[5]  D M Sonnenfroh,et al.  Absorption measurements of the second overtone band of NO in ambient and combustion gases with a 1.8-mum room-temperature diode laser. , 1997, Applied optics.

[6]  B. L. Upschulte,et al.  Diode laser sensors for aeroengines - Lessons learned and future promises , 1998 .

[7]  David M. Sonnenfroh,et al.  In-situ, multi-species combustion sensor using a multi-section diode laser , 1998 .

[8]  M. Allen,et al.  Diode laser absorption sensors for gas-dynamic and combustion flows. , 1998, Measurement science & technology.

[9]  Mark G. Allen,et al.  Ultrasensitive diode laser direct absorption measurements: applications to mass flux flight instrumentation , 1994, Photonics West - Lasers and Applications in Science and Engineering.

[10]  William J. Kessler,et al.  Simultaneous water vapor concentration and temperature measurements using 1.31-micron diode lasers , 1996 .

[11]  Mark G. Allen,et al.  Design and flight qualification of a diode laser-based optical mass flux sensor , 1998 .

[12]  R. Hanson,et al.  Rapid tuning cw laser technique for measurements of gas velocity, temperature, pressure, density, and mass flux using NO. , 1991, Applied optics.

[13]  M. P. Arroyo,et al.  Diode-laser absorption technique for simultaneous measurements of multiple gasdynamic parameters in high-speed flows containing water vapor. , 1994, Applied optics.