This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Verification of ENVISAT ASAR Active Antenna Thermal Design by a Thorough Sensitivity Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 01, 1997 by SAE International in United States
Annotation ability available
The ENVISAT ASAR antenna is 10 meters in length in the deployed configuration and consequently thermal balance testing was impossible due to TVAC chamber size and MGSE limitations. Therefore the verification of the ASAR active antenna thermal design was based mainly on analysis complemented, when necessary, by thermal balance tests at subsystem level on key components. This approach called up for extensive sensitivity analyses, taking into account the fact that all of the design, orbital parameters, operational scenario and mathematical simulation are subject to uncertainties. Special emphasis was put on assessing the impact of uncertainties on albedo and earthshine for low time constant components of the ASAR antenna which is facing the Earth. Predictions of temperatures and heater power needs were based on a chain of thermal mathematical models starting at components level and ending up at system level, relying upon reduced models integrated into upper level detailed models and built from various software packages, viz. ESATAN, TMG, ESABASE, THERMICA. This heterogeneous chain led to systematic uncertainties on model predictions which were carefully assessed.
|Technical Paper||FM Radio Reception Simulation in Open Space|
|Technical Paper||Implementation of an Electronic NVM Odometer|
|Journal Article||Electrical Architecture Optimization and Selection - Cost Minimization via Wire Routing and Wire Sizing|
CitationBoisvert, P., Rheault, S., Theophanous, P., Lebru, A. et al., "Verification of ENVISAT ASAR Active Antenna Thermal Design by a Thorough Sensitivity Analysis," SAE Technical Paper 972531, 1997, https://doi.org/10.4271/972531.
- Application of Uncertainty Philosophy to Satellite Thermal Design Stümpel D. Chalmers D.R. ERNO Raumfahrttechnik Bremen, FRG AIAA 19 th Thermophysics Conference 1984
- Natural Orbital Environment Guidelines for Use in Aerospace Vehicle Development NASA Technical Memorandum 4527 1994
- Space and Planetary Environment Criteria Guidelines or Use in Space Vehicle Development NASA Technical Memorandum 82478 1984