A Liquid Nutation Damper for the Satellite EQUATOR-S(Ein Fluessigkeitsnutationsdaempfer fuer den Satellit EQUATOR-S)
UNIVERSITAET DER BUNDESWEHR MUENCHEN NEUBIBERG (GERMANY F R)
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For the layout of a nutation damper for the EQUATOR-S satellite, a nutation damper with two identically symmetrical liquid dampers was observed. The damper consists of two pipes with a circular diameter. At the satellites given moments of inertia, as well as at its spin frequency, certain restrictions with regard to the dampers geometry were calculated so that a good nutation damping with booms swinging both inward and outward was ensured. The dampers were constructed along these parameters and tested in an air-set pendulum. The theoretical damping on the pendulum was measured and compared with the experiment, with the results concurring to a great degree.
- Fluid Mechanics