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Heat Pipe Science and Technology, An International Journal

ISSN Print: 2151-7975
ISSN Online: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v1.i1.20
pages 19-46

DEVELOPMENT OF PROPYLENE LHP FOR EUROPEAN MARS ROVER APPLICATIONS

Donatas Mishkinis
IberEspacio, Calle Magallanes 3, 4th floor, 28015, Madrid, Spain
Carmen Gregori
IberEspacio Tecnologia Aeroespacial, Magallanes 3, 4A, Madrid, 28010, Spain
Francisco Romera
IberEspacio. S. A.C/Magallanes, 3, 4th floor, 28015 Madrid, Spain
Alejandro Torres
IberEspacio, Calle Magallanes 3, 4th floor, 28015, Madrid, Spain

ABSTRACT

This paper presents the results of modeling and experimental investigation of a Passive Variable Thermal-Conductance Device for Mars Rover applications. The device is composed of a Loop Heat Pipe (LHP) and a pressure regulating valve. Both function as a heat switch and temperature control element. Propylene was selected as a working fluid due to challenging Mars environmental conditions. Excellent agreement between the EcosimPro model and test data was found. Special investigation with design optimization was conducted to demonstrate LHP functionality in any arrangement with respect to the gravity vector, including the worst possible orientation and environmental operating scenarios. High robustness and effectiveness of LHP with a pressure regulating valve as a heat switch for Mars Rover thermal control applications were fully validated through an extensive test campaign.


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