Space simulation techniques and facilities for SAX STM test campaign

Details Space simulation techniques and facilities for SAX STM test campaign Space simulation techniques and facilities for SAX STM test campaign

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994nascp3280..195g&link_type=abstract

In NASA. Goddard Space Flight Center, Eighteenth Space Simulation Conference: Space Mission Success Through Testing p 195-209 (S

Astronomy and Astrophysics

Astronomy

Astronomical Satellites, Earth Orbital Environments, Mathematical Models, Sky Surveys (Astronomy), Space Environment Simulation, Star Trackers, X Ray Astronomy, X Ray Sources, Centrifuges, Italian Space Program, Loads (Forces), Netherlands Space Program, Resonant Vibration, Spectrum Analysis, Temperature Measurement, Time Measurement, Variability

Scientific paper

SAX is a satellite for X-Ray astronomy. It is a major element of the overall basic Science Program of the Italian Space Agency (ASI) and is being developed with the contribution of the Netherlands Agency for Aerospace Programs (NIVR). The scientific objectives of SAX are to carry out systematic and comprehensive observations of celestial X-Ray sources over the 0.1 - 300 KeV energy range with special emphasis on spectral and timing measurements. The satellite will also monitor the X-Ray sky to investigate long-term source variability and to permit localization and study of X-Ray transients. Alenia Spazio is developing the satellite that is intended for launch in the second half of 1995 in a low, near-equatorial Earth orbit. At system level a Structural Thermal Model (STM) has been conceived to verify the environmental requirements by validating the mechanical and thermal analytical models and qualifying satellite structure and thermal control. In particular, the following tests have been carried out in Alenia Spazio, CEA/CESTA and ESTEC facilities: Modal Survey, Centrifuge, Acoustic, Sinusoidal/Random Vibration and Thermal Balance. The paper, after a short introduction of the SAX satellite, summarizes the environmental qualification program performed on the SAX STM. It presents test objectives, methodologies and relevant test configurations. Peculiar aspects of the test campaign are highlighted. Problems encountered and solutions adopted in performing the tests are described as well. Furthermore, test results are presented and assessed.

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