Herschel and Planck satellites have recently undergone the thermal vacuum and thermal balance (TVTB) test which was performed in the ESA-ESTEC Large Space Simulator for Herschel and in Centre Spatial de Liège (CSL) for Planck. One of the specific targets of the Herschel test was the verification of the thermal stability of two HIFI units (required to be better than 3.10−4 °C/s) and of the Star Tracker mounting plate (required to be better than 2.5.10−3 °C/s), with particular attention on the performance of the relevant feedback control loops. Control system design and model predictions are presented and compared against the test results. Further discussion on the requirement verification is provided.
Herschel Heaters Control Modeling and Correlation
Sae Int. J. Aerosp
International Conference On Environmental Systems ; 2009
Sae International Journal of Aerospace ; 4 , 1 ; 29-39
2009-07-12
11 pages
Conference paper
English
Infraroodsterrenkunde: van Herschel tot Herschel
Online Contents | 2009
|Engineering Index Backfile | 1954