On vibration-design aspects of an IR-scanning earth sensor

Details On vibration-design aspects of an IR-scanning earth sensor On vibration-design aspects of an IR-scanning earth sensor

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1167..293g&link_type=abstract

IN: Precision engineering and optomechanics; Proceedings of the Meeting, San Diego, CA, Aug. 10, 11, 1989 (A91-20951 07-74). Bel

Computer Science

Communication Satellites, Environmental Tests, Infrared Detectors, Remote Sensors, Satellite Attitude Control, Vibration Damping, Computerized Simulation, Fast Fourier Transformations, Frequency Measurement, Thermal Cycling Tests, Transfer Orbits

Scientific paper

The planned INSAT-II communication satellite uses three IR scanning earth sensors for attitude determination and control during its transfer orbit and on-orbit phases of operation. Though the system is under torsional vibration, it can also vibrate in the transverse direction under the bending mode. This paper discusses the bending mode vibrations, their frequencies, and the effect of forcing frequencies existing elsewhere on the spacecraft. Design considerations instituted in order to avoid failure of the system due to resonance induced by the vibrations are examined.

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