HERMES Thermal Control System — A Preliminary Design

881021

07/01/1988

Event
Intersociety Conference on Environmental Systems
Authors Abstract
Content
The HERMES Thermal Control System necessitates the adoption of both Active and Passive Thermal Control techniques.
The ATCS (Active Thermal Control Section) utilizes fluid coolant loops collecting and transporting heat loads from the various sources to the available sink devices. The methods of analysis and trade-off applied in the preliminary phase of the design activities are described, with particular attention to the selection of the fluid, the architecture of the loop, the flow sequence of the equipment in line and the redundancy policy. The design driving criteria are then discussed, outlining the optimization efforts concerning the aspects of mass saving and safety.
For the PTCS (Passive Thermal Control Section), the design philosophy together with analysis approach and techniques are described. Depending on the different constraints imposed by the various mission phases, the most appropriate insulation concept and required materials (foam/fibrous insulation and/or multi-layer insulation) are selected for each of the spaceplane compartments. The design is then optimized, with respect to mass and power consumption, using compartment level mathematical models, developed also to handle the particular problems posed by the spaceplane reentry.
The resulting thermal design, both for ATCS and PTCS, is then presented and finally the development and testing activities discussed.
Meta TagsDetails
DOI
https://doi.org/10.4271/881021
Pages
19
Citation
Gianfiglio, G., and Ferro, C., "HERMES Thermal Control System — A Preliminary Design," SAE Technical Paper 881021, 1988, https://doi.org/10.4271/881021.
Additional Details
Publisher
Published
Jul 1, 1988
Product Code
881021
Content Type
Technical Paper
Language
English