Publication Date:
2019-07-13
Description:
During the recent entry of the Mars Science Laboratory (MSL), the heat shield was equipped with thermocouple stacks to measure in-depth heating of the thermal protection system (TPS). When only convective heating was considered, the derived heat flux from gauges in the stagnation region was found to be underpredicted by as much as 17 W/sq cm, which is significant compared to the peak heating of 32 W/sq cm. In order to quantify the contribution of radiative heating phenomena to the discrepancy, ground tests and predictive simulations that replicated the MSL entry trajectory were performed. An analysis is carried through to assess the quality of the radiation model and the impact to stagnation line heating. The impact is shown to be significant, but does not fully explain the heating discrepancy.
Keywords:
Fluid Mechanics and Thermodynamics; Aerodynamics
Type:
ARC-E-DAA-TN19274
,
International Workshop on Radiation of High Temperature Gases in Atmospheric Entry; Nov 24, 2014 - Nov 28, 2014; St. Andrews, Scotland; United Kingdom
Format:
application/pdf
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