Overview of Recent EAST Testing, Modeling & Analysis

Brandis, Aaron

关键词: ELECTRIC ARCS;    SHOCK TUBES;    SHOCK WAVES;    SHOCK HEATING;    ATMOSPHERIC ENTRY;    REENTRY SHIELDING;    RADIATIVE HEAT TRANSFER;    THERMAL PROTECTION;    APPLICATIONS PROGRAMS (COMPUTERS);    COMPUTATIONAL FLUID DYNAMICS;    SPECTRA;    HYPERSONIC WIND TUNNELS;    CONVECTIVE HEAT TRANSFER;    DATA TRANSMISSION;    IMAGING TECHNIQUES;   

RP-ID  :  ARC-E-DAA-TN54621

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Shock Layer Radiation at NASA Ames - Background: Complex aerothermal and thermochemical phenomena of planetary entry define convective and radiative heating. A spacecraft's TPS (Thermal Protective System) mitigates heat transfer to substructure. Successful TPS design relies on verifiable characterization of these phenomena in the anticipated flight environment. - Approach: EAST (Electric Arc Shock Tube) [facility at Ames] simulates high-enthalpy, real-gas phenomena encountered by hypersonic vehicles entering planetary atmospheres by spectrally imaging the flow behind a moving shock wave. - Goal: Validate aerothermal models (DPLR (Data Parallel Line Relaxation Code) and NEQAIR (Nonequilibrium Radiative Transport and Spectra Program)), inform model improvements, reduce uncertainty and quantify design uncertainties. - Recent Relevant Projects: MSL (Mars Science Laboratory) & Mars 2020, InSight, OSIRIS-REx (Origins Spectral Interpretation Resource Identification Security Regolith Explorer), Orion EFT-1 (Exploration Flight-1) and EM-1 (Exploration Mission-1) and New Frontiers.