Mathematics
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.591..243s&link_type=abstract
In: Proceedings of the 11th European Space Mechanisms and Tribology Symposium, ESMATS 2005, 21-23 September 2005, Lucerne, Switz
Mathematics
Deployment And Hold-Down Mechanisms
Scientific paper
The first part of the paper describes the "Maeva" hinge whose 18 models has been successfully used in orbit to deploy 6 solar arrays, 4 antennas and the 2 meters long Demeter mast. Main properties of this reliable hinge are presented, (stiffnesses, positioning accuracy, cost, mass, driving torque,...). In the second and main part of the paper, tests and analysis performed to study the deployment kinematics of the solar arrays are presented. Indeed, "Maeva" hinges do not allow to control the opening sequence. Thus, deployment tests have been carried out in a micro gravity campaign on Zero-G flights and correlated mathematical model has been specifically developed using commercial "Solid Dynamics" software. Taking into account variation ranges for critical parameters and following the "Monte Carlo" statistical method, more than 1000 deployment simulations have been calculated. Based on this work results, we determined which parameters were influent on the deployment kinematics. Then, worst combined conditions have been simulated in order to demonstrate that there was no risk of incorrect solar arrays deployment (no interferences of the solar arrays with the satellite, no collision between solar panels, no hinges jam).
Emerit Arnaud
Givois Damien
Sicre Jacques
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