An Experimental Investigation Of Dome Cooling

Dennis Quan; William Hsiong

doi:10.1117/12.960781

11 September 1989 An Experimental Investigation Of Dome Cooling

Dennis Quan, William Hsiong

Proceedings Volume 1112, Window and Dome Technologies and Materials; (1989) https://doi.org/10.1117/12.960781
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

This paper presents the details of an experimental evaluation of the film cooling effectiveness of gaseous nitrogen and argon when injected near the nose tip of a hemispherical dome. A series of tests were conducted in the Johns Hopkins University/Applied Physics Laboratory Infrared (IR) Seeker Aerothermal Test Facility to determine the amount of coolant flow required for thermal and structural survival of an IR dome when exposed to stressing missile flight environments. The tests measured the temperature distribution over a simulated IR dome for two representative altitudes at a nominal Mach number of 5 and pitch angles of zero and 10 degrees. The key experimental result was that the entire dome can be cooled with the predicted coolant flow requirements. Reduced levels of heating into the dome was still achieved at 10% of the predicted flow. Coolant flow correlations based on a modified flat plate model were validated.

Citation Download Citation

Dennis Quan and William Hsiong "An Experimental Investigation Of Dome Cooling", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); https://doi.org/10.1117/12.960781

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