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S8 Engenharia Aeroespacial |
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Title:
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NUMERICAL RESULTS FOR A COUPLED LAUNCHER-SATELLITE SYSTEM ANALYSIS
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Summary :
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THIS PAPER PRESENTS SOME PRELIMINARY NUMERICAL
RESULTS OBTAINED FOR THE ANALYSIS OF A COUPLED LAUNCHER-SATELLITE
SYSTEM, NAMELY THE FIRST BRAZILIAN LAUNCHER, THE VLS, AND ITS SATELLITE.
THE FINITE ELEMENT METHOD IS USED TO OBTAIN THE RESPONSE OF THE SYSTEM.
THE LAUNCHER IS MODELED AS A 3-D BEAM-LIKE STRUCTURE, WHERE BEAM
ELEMENTS, LUMPED MASSES AND SPRING ELEMENTS WERE USED. EXPERIMENTAL
MODAL ANALYSIS RESULTS WERE USED TO ADJUST THE FINITE ELEMENT MODEL OF
THE VEHICLE. THE SATELLITE IS REPRESENTED BY A FULL 3-D MODEL. A CURVE
OF THRUST AS FUNCTION OF TIME IS USED TO INPUT THE DYNAMIC LOAD ONTO THE
SYSTEM. RESPONSES AT SPECIFIC LOCATIONS ARE GIVEN IN BOTH TIME AND
FREQUENCY DOMAINS. IN THE ACTUAL VEHICLE, ACCELEROMETERS ARE USED TO
TAKE MEASUREMENTS DURING FLIGHT. FUTURE FLIGHTS OF THE VEHICLE WILL
GENERATE DATA THAT WILL ALLOW THE EVALUATION OF THE REALIBITY OF THE
MODEL. |
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Author :
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Damilano, J. G.
Duarte, J. A. A.
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Paper View :
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