Lessons Learned from the METOP Thermal Analysis and Testing

Metop (METeorological OPerational satellite) is a series of three satellites designed to monitor the climate and improve weather forecasting. This paper describes the thermal analysis, thermal testing performed, and relevant lessons learned. For the thermal analysis campaigns it focuses on:

• exchange and correlation of reduced thermal mathematical models established in various software formats
• sizes and content of the models, in particular automatic generation of reduced models from the detailed models
• uncertainties
• definitions of thermal interfaces

The lessons learned from the thermal testing campaigns apply to:

• selection of test environment, using solar simulation and/or infra-red techniques
• selection of test cases based on thermal design driving parameters and/or test chamber capabilities
• adequate instrumentation (i.e. thermocouples, test heaters) for all critical components
• (un)expected events e.g. EGSE crash, last minute revision of temperature limits, and introduction of special test devices