ExoMars 2020 LHPs: from the concept to the flight models

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dc.creatorPrado-Montes, Paula
dc.creatorCampo, Saúl
dc.creatorGarcía, Antonio
dc.creatorTorres, Alejandro
dc.creatorMunì, Manuela
dc.creatorNegri, Federica
dc.date.accessioned2017-07-07T16:52:07Z
dc.date.available2017-07-07T16:52:07Z
dc.date.issued2017-07-16
dc.descriptionPaula Prado-Montes, IberEspacio, Spain
dc.descriptionSaúl Campo, IberEspacio, Spain
dc.descriptionAntonio García, IberEspacio, Spain
dc.descriptionAlejandro Torres, IberEspacio, Spain
dc.descriptionManuela Munì, Thales Alenia Space Italia, Italy
dc.descriptionFederica Negri, Thales Alenia Space Italia, Italy
dc.descriptionICES201: Two-Phase Thermal Control Technology
dc.descriptionThe 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017
dc.description.abstractLoop Heat Pipes (LHPs) have been selected as the cornerstone solution for the ExoMars 2020 Rover Module (RM) thermal control. The RM LHPs include the switch function provided by the Vapor Modulation concept, which guarantees the equipment survival at the extreme Mars environment. This paper describes the concept of the Vapor Modulated Loop heat Pipe (VMLHP) and its implementation to the Flight Models design, manufacturing and testing. The RM LHPs consist of four units, two of them integrated on the Service Module (SVM) and two of them on the Analytical Laboratory Drawer (ALD). Each LHP is designed to transport up to 50 W and operate at temperatures from -50 ºC to +55 ºC at the evaporator level and from -120ºC to +55 ºC at the condenser. The Pressure Regulating Valves, which provide the vapor modulation and switching function, keep the SVM at a temperature higher than 0 ºC and the ALD above -40 ºC, even during the cold Martian night. A detailed thermo-hydraulic model of the LHPs has been developed in EcosimPro and correlated to the test results. The model includes all thermal links representative of the RM and the Martian environment. Operation of each LHPs has been validated through an extensive qualification campaign. Details about the main tests in climatic chamber and in vacuum are presented in the paper. Also, the main lessons learnt during the qualification and their implementation for the flight models are described.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2017_200
dc.identifier.urihttp://hdl.handle.net/2346/73003
dc.language.isoeng
dc.publisher47th International Conference on Environmental Systems
dc.subjectVapor Modulated Loop Heat Pipe
dc.subjectExoMars 2020
dc.subjectThermal tests
dc.subjectVacuum
dc.subjectEcosimPro simulation
dc.subjectFlight Model
dc.titleExoMars 2020 LHPs: from the concept to the flight modelsen_US
dc.typePresentations

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