Radiatively driven hypersonic wind tunnel

Richard B. Miles, Carry L. Brown, Walter R. Lempert, Richard A. Yetter, George J. Williams, Seymour M. Bogdonoff, Douglas Natelson, Jeffrey R. Gues

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

This paper outlines a new approach to the design of hypersonic wind tunnels. This new approach is motivated by fundamental limitations of conventional isentropic expansions that arise from the very high temperatures required to achieve the necessary enthalpy for hypersonic flow. These high temperatures lead to excessivethroat degradation and contaminated air in the test section. The consequence is that the run times of conventional facilities must be short, and tests are conducted in “air” of unknown composition containing exceedingly high concentrations of radical and superequilibrium species such as NO as well as ablated plenum and throat material. The radiatively driven wind-tunnel approach takes advantage of the real gas properties of air to achieve high enthalpy at low temperature in the plenum, thusminimizing throat degradation and suppressing the formation of unwanted species in the plenum. Additional energy is radiatively added downstream of the throat in theexpansion section to achieve the desired test conditions. The temperature of the air is kept low throughout the expansion, so that the formation of superequilibrium species and radicals is kept to a minimum. Radiative sources that couple to air include high-power lasers and microwave devices. A one-dimensional model including optical coupling is developed using, as an example, an HFlaser coupled to the naturally occurring CCh in air.

Original languageEnglish (US)
Pages (from-to)1463-1470
Number of pages8
JournalAIAA journal
Volume33
Issue number8
DOIs
StatePublished - Jan 1 1995

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Hypersonic aerodynamics
Wind tunnels
Air
Enthalpy
Degradation
Hypersonic flow
Temperature
Microwave devices
High power lasers
Chemical analysis
Gases

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Cite this

Miles, R. B., Brown, C. L., Lempert, W. R., Yetter, R. A., Williams, G. J., Bogdonoff, S. M., ... Gues, J. R. (1995). Radiatively driven hypersonic wind tunnel. AIAA journal, 33(8), 1463-1470. https://doi.org/10.2514/3.12568
Miles, Richard B. ; Brown, Carry L. ; Lempert, Walter R. ; Yetter, Richard A. ; Williams, George J. ; Bogdonoff, Seymour M. ; Natelson, Douglas ; Gues, Jeffrey R. / Radiatively driven hypersonic wind tunnel. In: AIAA journal. 1995 ; Vol. 33, No. 8. pp. 1463-1470.
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Miles, RB, Brown, CL, Lempert, WR, Yetter, RA, Williams, GJ, Bogdonoff, SM, Natelson, D & Gues, JR 1995, 'Radiatively driven hypersonic wind tunnel', AIAA journal, vol. 33, no. 8, pp. 1463-1470. https://doi.org/10.2514/3.12568

Radiatively driven hypersonic wind tunnel. / Miles, Richard B.; Brown, Carry L.; Lempert, Walter R.; Yetter, Richard A.; Williams, George J.; Bogdonoff, Seymour M.; Natelson, Douglas; Gues, Jeffrey R.

In: AIAA journal, Vol. 33, No. 8, 01.01.1995, p. 1463-1470.

Research output: Contribution to journalArticle

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Miles RB, Brown CL, Lempert WR, Yetter RA, Williams GJ, Bogdonoff SM et al. Radiatively driven hypersonic wind tunnel. AIAA journal. 1995 Jan 1;33(8):1463-1470. https://doi.org/10.2514/3.12568