Abstract
A new concept in non-intrusive pressure and temperature measurements for use onboard aircraft is described. The technique is based upon a combination of Rayleigh scattering and fluorescence using the Schumann-Runge system of oxygen. A functional description of the apparatus is provided along with theoretical descriptions of its performance. A numerical model for prediction of performance is described. The results of flight tests are presented which demonstrate the sensitivity of the technique to changes in both temperature and pressure.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Chan, C. and Daily, J. W. (1980) “Measurement of Temperature in Flames Using Laser Induced Fluorescence Spectroscopy of OH,” Appl. Optics, Vol. 19, No. 12, p. 1963.
Crosley, D. R. and Smith, G. P. (1980) “Vibrational Energy Transfer in Laser Excited A2 ∑+ OH as a Flame Thermometer”, Applied Optics, Vol. 19, No. 4, p. 517.
Zizak, G., Omenetto, N., and Winefordner, J. D. (1984) “Laser Excited Atomic Fluorescence Techniques for Temperature Measurements in Flames: A Summary,” Opt Eng., Vol. 23, No. 6, p. 749.
Cattolica, R. J. (1981) “OH Rotational Temperature From Two-Line Laser Excited Fluorescence,” Applied Optics, Vol. 20, p. 1156.
Scitzman, J. M., Kychakoff, G., and Hanson, R. K. (1985) “Instantaneous Temperature Field Measurements Using Planar Laser Induced Fluorescence,” Optics Letters, Vol. 10, No. 9, p. 439.
Miles, R. B., Connors, J. J., Howard, P. J., Markovitz, E. C., and Roth, G. J. (1988) “Proposed Single-Pulse Two-Dimensional Temperature and Density Measurements of Oxygen and Air,”. Optics Letters, Vol. 13, No. 3, p. 195.
McCullough, R. W. and Northam, G. B. (1982) “A High Speed Non-intrusive Temperature Diagnostic for Combustion Processes,” Temperature, Vol. 5, American Institute of Physics, New York, p. 665.
Creek, D. M. and Nicholls, R. W. (1975) “A Comprehensive Re-Analysis of the O2 (B3 ∑U-x3 ∑g ) Schumann-Runge Band System” Proc. R. Soc. London, A. 341, p. 517.
Allison, A. C., Dalgarno, A., and Pasachoff, N. W. (1971) “Absorption by Vibrationally Excited Molecular Oxygen in the Schumann-Runge Continuum”, Planet. Space Sci., Vol. 19, p. 1463.
Cann, M. W. P., Shin, J. B., and Nicholls, R. W. (1984) “Oxygen Absorption in the Spectral Range 180–300 nm for Temperatures to 3000K and Pressures to 50 atm”, Can. J. Phys., Vol. 62, p. 1738.
Lee, M. P. and Hanson, R. K. (1986) “Calculations of O2 Absorption and Fluorescence at Elevated Temperatures for a Broadband Argon-Fluoride Laser Source at 193 nm”, J. Quant. Spectrosc. Radiat. Transfer, Vol. 36, No. 5, p. 425.
Lewis, B. R., Berzins, L., Carver, J. H., and Gibson, S. T. (1986) “Rotational Variation of Predissociation Linewidth in the Schumann-Runge Bands of O2” J. Quant. Spectrosc. Radiat. Transfer, Vol. 36, No. 3, p. 187.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Azzazy, M., Abbiss, J.B., McCullough, R.W. (1992). Determination of Aircraft Pressure Altitude and Ambient Temperature using Fluorescence and Rayleigh Scattered Radiation from a Continuum Source. In: Durão, D.F.G., Heitor, M.V., Whitelaw, J.H., Witze, P.O. (eds) Combustings Flow Diagnostics. NATO ASI Series, vol 207. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2588-8_24
Download citation
DOI: https://doi.org/10.1007/978-94-011-2588-8_24
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5142-2
Online ISBN: 978-94-011-2588-8
eBook Packages: Springer Book Archive