Instrument canister thermal control
Abstract
A transient thermal analysis and test of a thermal control canister is described. The 1 x 1 x 3 m canister provides a uniform thermal environment for shuttle instrument payloads requiring fine temperature control, the design goal being operation between 0 C and 20 C with a range of plus or minus 1 C at any selected set-point temperature. The canister side walls are isothermalized by a system of longitudinal and circumferential heat pipes rejecting heat through feedback controlled, variable conductance heat pipes to side mounted radiators. A breadboard model of two side walls and two radiators was tested in a thermal vacuum chamber. The breadboard was stable over a wide range of effective environments, experiment dissipations, and control point temperature levels.
- Publication:
-
AIAA, 12th Thermophysics Conference
- Pub Date:
- June 1977
- Bibcode:
- 1977thph.confQ....H
- Keywords:
-
- Space Shuttles;
- Temperature Control;
- Breadboard Models;
- Control Equipment;
- Design Analysis;
- Heat Flux;
- Heat Pipes;
- Mathematical Models;
- Payloads;
- Fluid Mechanics and Heat Transfer