Changes between Version 9 and Version 10 of UserApp/Proba-V


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Timestamp:
Dec 4, 2011, 4:20:21 PM (8 years ago)
Author:
Iliyankatsarski
Comment:

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  • UserApp/Proba-V

    v9 v10  
    402402 *  Gradients: The final challenge in the thermal design is to avoid thermal gradients in the instrument as gradients are hard to control and can severely affect the thermo-elastic performance. As already described, the heat extraction has respected the symmetry of the instrument. An unavoidable asymmetry is the location of the Star Trackers as they have their own limitations. The heat load from the FPA and the detectors on the telescopes is normally entering the instrument through the TMAs to the top skin of the optical bench. However, this would heavily distort and bend the optical bench as the top skin will expand more than the bottom. To reduce this effect, thermal straps are designed to extract most of the heat (4/5) from the detectors and the FPA towards the optical bench, the rest is still entering the TMA structure. To reduce the thermal bending, the heat straps are mounted on the side of the optical bench to avoid the bending of the bench.
    403403
    404 [[http://events.eoportal.org/presentations/7111/10001905.html For further info]]
     404[http://events.eoportal.org/presentations/7111/10001905.html For further info File:ProbaV Auto6.jpeg]
     405
     406=  See also ==
     407
     408
     409[http://probav-iuc.org/initiatives/201102 Proba Vegetation File:ProbaV Auto6.jpeg]
     410[http://www.esa.int/esaMI/Proba/index.html ESA Proba Missions File:ProbaV Auto6.jpeg]
     411[[http://probav-iuc.org/assets/investigations/Aitkenhead.pdf http://probav-iuc.org/assets/investigations/Aitkenhead.pdf]]
     412[[http://probav-iuc.org/assets/investigations/Aitkenhead.pdf http://probav-iuc.org/assets/investigations/Aitkenhead.pdf]]
     413[[http://probav-iuc.org/assets/201102/PROBA-V_PDF.pdf http://probav-iuc.org/assets/201102/PROBA-V_PDF.pdf]]
     414[[http://probav-iuc.org/assets/investigations/DiBella.pdf http://probav-iuc.org/assets/investigations/DiBella.pdf]]