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An Experimental Investigation of Hypersonic Stagnation Temperature Probes


Wood, Richard Donald (1959) An Experimental Investigation of Hypersonic Stagnation Temperature Probes. Engineer's thesis, California Institute of Technology. doi:10.7907/KXK1-JQ18.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. An experimental investigation of single-shielded hypersonic stagnation temperature probes was conducted in the GALCIT Leg No.1 hypersonic wind tunnel and in the Jet Propulsion Laboratory 12-inch supersonic wind tunnel. By the combined use of both shield and base heating, a probe recovery factor of r = 1.0 was obtained over a range of Reynolds numbers at M [...] = 5.75. By using the experimental data and simple heat balance equations, the probe losses, for the conditions investigated, were found to be in the proportion: shield conduction loss - 15; base conduction loss - 3; thermocouple conduction loss - 1; thermocouple radiation loss - 3/100. The typical decrease in probe recovery factor observed for decreasing Reynolds number appears to be related to a decrease in the base temperature and not to the wire conduction loss as commonly assumed. An optimum probe vent to entrance area ratio of [...] was found and is shown to be a function of the number of vent holes used in the shield. No single calibration parameter was found that could relate the experimental recovery factors under all conditions.

Item Type:Thesis (Engineer's thesis)
Subject Keywords:(Aeronautical Engineering)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Lees, Lester (advisor)
  • Kendall, James M. (advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1959
Record Number:CaltechETD:etd-02082006-130736
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:549
Deposited By: Imported from ETD-db
Deposited On:10 Feb 2006
Last Modified:19 Oct 2023 21:36

Thesis Files

PDF (Wood_rd_1959.pdf) - Final Version
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