TPS Failure Modes and Margins, and Architectural Concepts to Maximize Entry Reliability

This study will generate data to be used in a Risk Informed Decision Making (RIDM) framework that will evaluate the current MSR EEV baseline aeroshell TPS material, and potential 3D woven TPS alternatives. The RIDM process and other key metrics will guide the ranking and selection between potential architectures and identify opportunities for design improvements that promote system reliability.

Reliability requirements for a Mars Sample Return (MSR) mission are several orders of magnitude more stringent than any mission flown to date. This requirement drove the current MSR design to a fully dense Carbon Phenolic TPS; however, recent advances in 3D Woven TPS technologies merit a re-opening of this design trade to achieve the highest system reliability possible. We will generate data to be used in a RIDM framework, evaluate current MSR EEV TPS and alternatives within the RIDM framework, rank & recommend a TPS solution, and develop a risk retirement strategy for the recommended TPS solution.

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