Wood, Richard D. (1959) An experimental investigation of hypersonic stagnation temperature probes. Engineer's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-02082006-130736
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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)|
|Degree Grantor:||California Institute of Technology|
|Division:||Engineering and Applied Science|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||1 January 1959|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Imported from ETD-db|
|Deposited On:||10 Feb 2006|
|Last Modified:||26 Dec 2012 02:30|
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