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Proceedings Paper

Thermal performance demonstration of a prototype internally cooled nose tip/forebody/window assembly
Author(s): Carl John Wojciechowski; Lori C. Brooks; Gene Teal; Zain Karu; David A. Kalin; Gregory W. Jones; Harold Romero
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Paper Abstract

Internally liquid cooled apertures (windows) installed in a full size forebody have been characterized under high heat flux conditions representative of endoatmospheric flight. Analysis and test data obtained in the laboratory and at arc heater test facilities at Arnold Engineering Development Center and NASA Ames are presented in this paper. Data for several types of laboratory bench tests are presented: transmission interferometry and imaging, coolant pressurization effects on optical quality, and coolant flow rate calibrations for both the window and other internally cooled components. Initially, using heat transfer calibration models identical in shape to the flight test articles, arc heater facility thermal test environments were obtained at several conditions representative of full flight thermal environments. Subsequent runs tested the full-up flight article including nosetip, forebody and aperture for full flight duplication of surface heating rates and exposure ties. Pretest analyses compared will to test measurements. These data demonstrate a very efficient internal liquid cooling design which can be applied to other applications such as cooled mirrors for high heat flux applications.

Paper Details

Date Published: 21 November 1996
PDF: 14 pages
Proc. SPIE 2855, High Heat Flux Engineering III, (21 November 1996); doi: 10.1117/12.259823
Show Author Affiliations
Carl John Wojciechowski, Lockheed Martin Corp. (United States)
Lori C. Brooks, Lockheed Martin Corp. (United States)
Gene Teal, Lockheed Martin Corp. (United States)
Zain Karu, Lockheed Martin Corp. (United States)
David A. Kalin, Smith General Contractors (United States)
Gregory W. Jones, U.S. Army Space & Strategic Defense Command (United States)
Harold Romero, U.S. Army Space & Strategic Defense Command (United States)


Published in SPIE Proceedings Vol. 2855:
High Heat Flux Engineering III
Ali M. Khounsary, Editor(s)

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