This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Thermal Analysis of the Habitable volumes of Hermes
Annotation ability available
Sector:
Language:
English
Abstract
The habitable volumes of HERMES ate the capsule, the mid-fuselage cabin, the airlock and possibly a further compartment in the cone-shaped adapter. During launch, re-entry and on-ground waiting these volumes are subjected to strongly transient thermal boundary conditions. Compared to the configuration of the SHUTTLE the situation in HERMES needs a considerably higher effort in the area of thermal control performance analysis: HERMES has a higher surface area to mass ratio and the structure of HERMES will be subjected to higher temperatures during re-entry.
To assess the thermal control problems of the habitable volumes of HERMES, a lumped parameter model using ESATAN comprising all thermally active components and assemblies within the pressurized volumes, all relevant structural and equipment heat capacities as well as all thermally relevant interfaces was constructed. The model is being used within the HERMES ECLSS project to provide thermal interface data for ECLSS assemblies, to define and optimize the thermal control baseline, to analyze air temperature control problems and to study the impact of various design changes on the overall heat rejection to the active thermal control system. The results shown include the transient temperatures and heat flaxes for a nominal re-entry and post-landing and two steady state on orbit results.
Recommended Content
Authors
Citation
Rothmeyer, M., Winkeljann, A., and Hofacker, W., "Thermal Analysis of the Habitable volumes of Hermes," SAE Technical Paper 891520, 1989, https://doi.org/10.4271/891520.Also In
References
- Environmental Control and Life Support Subsystem Specification 06 Nov 87
- Specification, d'Etude de phase B3 du sons-systeme ECLS H-NT-1L-0003-CNE 20 Octobre 1987
- The active thermal control system, technical requirements and data AEROSPATIALE 25 NOV 1987
- Smith J.P. S1NDA User's Manual TRW Systems Group
- ESATAN User Manual Version 2.1 GEC Research LTD
- Barker R. S. So K. T. DeBarro M. J. G189A Program Program Modeling of Environmental Control and Life Support Systems for the Space Station 17th Intersociety Conf. on Env. Systems Seattle July 1987 Paper 871427
- Rothmeyer M. Schwarzott W. Evolution of Thermal Analysis Methods Towards Integrated System Performance Simulation Proc. of the 3rd Eur. Symp. on Space Thermal Control and Life Support Systems Noordwijk Oct 88 December 1988