Calibration of the Heat Flow and Physical Properties Package (HP 3) for the InSight Mars Mission

Earth and Space Science

T. Spohn¹  M. Grott¹  J. Knollenberg¹  M. Scharringhausen²  T. Wippermann²  T.L. Hudson³  W.B. Banerdt³  S.E. Smrekar³  C. Krause⁴ 

[1] Institute of Planetary Research German Aerospace Center (DLR) Berlin Germany;Institute of Space Systems German Aerospace Center (DLR) Bremen Germany;Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA;Space Operations and Astronaut Training German Aerospace Center (DLR) Cologne Germany;

关键词: Mars;    Heat Flow;    Geopysics;    InSight;   

DOI  :  10.1029/2019EA000670

来源: DOAJ

【 摘 要 】

Abstract The (HP 3) of the InSight Mars mission is an instrument package to measure the Martian geothermal heat flow. The instrument's platinum resistance temperature sensors have been calibrated between −75 and +55 °C, and the absolute temperature uncertainty of the calibration is 10 mK. Temperature differences can be measured with an uncertainty of better than 5 mK. HP 3 determines regolith thermal conductivity by using the HP 3 mole as a modified line heat source, and thermal conductivity can be measured with an uncertainty of better than 4%. Tilt sensors used to determine the attitude of the mole during penetration measure tilt with an uncertainty of better than 0.25°.

【 授权许可】

Unknown