Current Activities for Evaluation and Prediction of Ablator TPS Performance at JAXA ARD
Start Date
1-3-2011 10:15 AM
Description
JAXA ARD has been developing a comprehensive test system for experimental evaluation of the ablator TPS performance as well as numerical prediction in flight. To enhance accuracy and reliability of heating tests, the thermochemical state of test flow has been studied so far in detail, and now continuously monitored during heating tests. The SCMA code for ablator analysis has been extended to deal with multi-dimensional problems and to be coupled with test flow analysis, taking into account anisotropy of TPS materials and advanced thermochemical models, such as nonequilibrium oxidation and nitridation. The heating test results are compared with the numerical results so that overall understanding the heating test can be obtained. The above test techniques have been validated using a variety of ablators, and now applied to light-weight ablators under development.
Current Activities for Evaluation and Prediction of Ablator TPS Performance at JAXA ARD
JAXA ARD has been developing a comprehensive test system for experimental evaluation of the ablator TPS performance as well as numerical prediction in flight. To enhance accuracy and reliability of heating tests, the thermochemical state of test flow has been studied so far in detail, and now continuously monitored during heating tests. The SCMA code for ablator analysis has been extended to deal with multi-dimensional problems and to be coupled with test flow analysis, taking into account anisotropy of TPS materials and advanced thermochemical models, such as nonequilibrium oxidation and nitridation. The heating test results are compared with the numerical results so that overall understanding the heating test can be obtained. The above test techniques have been validated using a variety of ablators, and now applied to light-weight ablators under development.