Changes between Version 21 and Version 22 of TBR/UserApp/Space/Proba_2


Ignore:
Timestamp:
Nov 29, 2011, 11:29:00 PM (8 years ago)
Author:
Iliyankatsarski
Comment:

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  • TBR/UserApp/Space/Proba_2

    v21 v22  
    105105Observation Mode to avoid star-sensor blinding by the Earth
    106106
    107  Finally, the ACNS functions support automatic “image paving” for the Sun-Imaging instrument (SWAP)
    108  in order to increase its actual field of view. PROBA 2, as PROBA 1, has been fitted with a highaccuracy
    109  double head star tracker, with GPS receiversand with a set of reaction wheels for the nominal ACNS
     107Finally, the ACNS functions support automatic “image paving” for the Sun-Imaging instrument (SWAP)
     108in order to increase its actual field of view. PROBA 2, as PROBA 1, has been fitted with a highaccuracy
     109double head star tracker, with GPS receiversand with a set of reaction wheels for the nominal ACNS
    110110operation. This set of sensors and actuators is complemented with the magnetotorquers and 3-axis
    111111magnetometers. As explained above, PROBA 2 carries as well an additional star tracker, an additional GPS, an
     
    178178The PROBA 2 operational modes for the ACNS are as follows:
    179179 *   The Bdot mode (safe mode): uses the Earth’s magnetic field to reduce angular rates after separation and also
    180  as a safe mode during the mission. It ensures that the solar arrays on the deployed panels remain roughly pointed towards the Sun.
     180as a safe mode during the mission. It ensures that the solar arrays on the deployed panels remain roughly pointed towards the Sun.
    181181 *   The magnetic mode (experimental): uses only the magnetic field to point the desired payload toward a desired target.
    182182 *   The inertial mode controls the spacecraft attitude with respect to the inertial frame.
     
    299299
    300300
    301  Processing (SWAP)
     301Processing (SWAP)
    302302SWAP is an extreme ultraviolet (EUV) telescope that will provide images of the solar corona at a temperature
    303303of roughly 1 million degrees. The instrument is entirely  developed and tested in Belgium under the supervision