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| Test Method of Thermal Insulation Performance for Ablative Thermal Protection Structureunder High Temperature Environment |
| Received:April 10, 2024 Revised:August 27, 2024 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2024.10.008 |
| KeyWord:hypersonic vehicle ablative thermal protection thermalinsulation performance radiation heating temperature flux |
| Author | Institution |
| ZHANG Jie |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
| WU ingtao |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
| LIU Ningfu |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
| CHEN Hong |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
| LI Xinxin |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
| GAO Zhe |
National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an , China |
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| Abstract: |
| The work aims toestablish ahigh-precision test method for evaluating the thermal insulation performance of the ablative thermal protection structure. The characteristics of ground thermal test for ablative thermal protection were analyzed. The test program for the thermal insulation performance of the ablative thermal protection was designed and thehigh-precision thermal load simulation method considering heat loss in the ground test was proposed. The test device of ablative thermal protection structure was established in which quartz lamp radiation heater was used to simulate thermal environment and a reusable packaging fixture was used to install test piece and heat flux gage. Thermal protection performance tests for typical ablative structures were successfully completed. The backside temperature was obtained at steady state and transient state. The test device ran stably and reliably which could effectively eliminate thermal boundary effect and ensure heat flux measuring and controlling for long time.The simulationrepeatability and thermal field uniformity and control precisionwere verified by the test results. The simulation problem caused by fire and smoke when heating ablative thermal protection structures issolved, which provides high-precision test method for material screening and structural sizing of ablative thermal protection structures. |
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