What does thermal control do?
Here are its goals:
- Maintain equipment temperature in specified ranges during all mission life.
- Guarantee optimum performances when equipment is operating
- Avoid damage when equipment is not operating
- Keep the specified temperature stability for delicate electronics, or stable optical components.
- Minimise temperature differences as specified between units, or temperature gradients along structural elements.
- Maintain boundary temperatures at interface between subsystems, to ease interface management
- Guarantee the correct operation of thermal control subsystem by means of design, analysis and test
- Determine the most influencing factors, and manage them within the satellite resources and Space environment constraints.
A typical thermal design loop consists of the following activities:
- establish the thermal requirements
- establish the worst environmental heat loads and power dissipation
- elaborate the control means
- build mathematical models to simulate the satellite thermal behaviour
- analyse the design for worst environmental and dissipation heat loads
- verify the design against the requirements
- gather the budgets
- change the design if necessary
- verify the design by test and correlate the mathematical models
Last update: 27 March 2007