Thermal Response of the Mars Science Laboratory Spacecraft during Entry, Descent and Landing

Date

2016-07-10

Journal Title

Journal ISSN

Volume Title

Publisher

46th International Conference on Environmental Systems

Abstract

The Mars Science Laboratory (MSL) spacecraft successfully performed its Entry, Descent & Landing (EDL) phase on August 6, 2012. This paper presents the thermal response of the MSL spacecraft from the start of EDL (at Entry minus 30 minutes) to Rover touchdown on the surface of Mars.

Thermally significant events during EDL include: 1) venting of the Freon working fluid from the cruise Heat Rejection System (HRS), 2) Cruise Stage Separation, 3) Turn to Entry 4) Entry Aero-heating, 5) Parachute Deploy, 6) Heatshield Separation, 7) Backshell Separation, 8) Powered Descent, 9) Rover Separation and 10) Rover touchdown.

Temperature telemetry recorded during EDL is used to reconstruct the thermal response of the spacecraft to each EDL event. Temperature profiles for the Descent Stage and Rover hardware are presented and explained to document the thermal response of the MSL spacecraft to the changing EDL environments (aerothermal heating and convective cooling) and power states.

Description

United States
NASA JPL
Jet Propulsion Laboratory
102
ICES102: Thermal Control for Planetary Surface Missions and Small-Body Rendezvous Systems
Vienna, Austria
Keith S. Novak, Jet Propulsion Laboratory, California Institute of Technology, USA
Jennifer R. Miller, Jet Propulsion Laboratory, California Institute of Technology, USA
Anthony D. Paris, Jet Propulsion Laboratory, California Institute of Technology, USA
Frank P. Kelly, Jet Propulsion Laboratory, California Institute of Technology, USA
The 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.

Keywords

Mars Science Laboratory, MSL, Entry Descent & Landing, thermal design, spacecraft

Citation