smart structure simulation for micro-vibration environment control
- Paper number
IAC-08.C2.5.7
- Author
Mr. Pietro Carlo Marucchi Chierro, Thales Alenia Space Italy, Italy
- Coauthor
Mr. Nicola Riva, Sofiter System Engineering, Italy
- Year
2008
- Abstract
One of the fundamental goals of the Spacecraft for scientific investigation and astrophysics are to guarantee a suitable Micro-vibration Environment for the main following objectives:
- Earth observation
- Space science
- Telecommunications –> pointing requirements mainly for geostationary satellite;
- Space infrastructures –> support experiments in material science, crystal growth and basic fluid physics for experiment at ISS on board or future manned space laboratories.
Since the disturbance sources, like mechanism and thermal clank, induce higher vibration levels than the allowable ones it is a common practice after the first Design Analysis Cycle to start a feasibility study on potential Recovery Actions Passive or Active ones to retrieve the expected Non–Compliances. Currently the preferred recovery actions are the passive ones for feasibility, more reliability and cost reasons mainly for mechanism while for the thermal clank only structural architecture (distance from disturber to receiver, structural joints) can reduce its disturbance effect. The implementation of active isolation system can guarantee a better mechanical stability for both the steady state and the transitory disturbers with the advantage of mass and volume reduction vs. the passive one. Moreover, the control system defined on this study due to its powerful self-adaptability can control different disturbances signature during the operative life of the spacecraft. Based on the promising results got in this study, a preliminary simulation of a SMART structure is explored and the results got by this investigation open new scenario for its application on future Space Project. The aim of this paper is to highlight the simulation methodology used to predict the effect of the active control on the micro-vibration environment and its correlation with test data
- Abstract document
- Manuscript document
IAC-08.C2.5.7.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.