Thermostructural Evaluation Of Spinel Infrared (IR) Domes

Forrest A. Strobel

doi:10.1117/12.932494

26 February 1982 Thermostructural Evaluation Of Spinel Infrared (IR) Domes

Forrest A. Strobel

Proceedings Volume 0297, Emerging Optical Materials; (1982) https://doi.org/10.1117/12.932494
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

Aerothermal testing of two full scale magnesium aluminate spinel IR domes in a hot gas facility has been conducted at the Naval Weapons Center (NWC). The objective of the testing was to provide information on the stress levels at which the spinel domes would fracture. Initial tests showed the spinel domes would survive heating conditions which had caused thermal stress fracture in thirty previously tested magnesium fluoride domes. Test conditions were typical of the aeroheating experienced following a supersonic missile launch. In subsequent testing, spinel dome fracture was accomplished by increasing the severity of the heating conditions. Through the use of computer modeling, temperature and stress levels in the domes were calculated for both heating conditions. Predicted fracture stress for the dome was found to be very sensitive to the property data which was used in the computer models.

Citation Download Citation

Forrest A. Strobel "Thermostructural Evaluation Of Spinel Infrared (IR) Domes", Proc. SPIE 0297, Emerging Optical Materials, (26 February 1982); https://doi.org/10.1117/12.932494

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