SEPTA41 EV – A FULLY INTEGRATED SOLAR ARRAY DRIVE MECHANISM

摘要

The SEPTA41 Ev is used to drive the Solar Array andrnto transmit power and signals to and from the satellite. Itrnis the smallest Solar Array Drive Assembly (SADA) ofrnthe mechanisms family manufactured by OerlikonrnSpace AG (OSZ). It is composed of:rn1. a Solar Array Drive Electronics (SADE) whichrncommands the rotation of the SEPTA41rn2. a Solar Array Drive Mechanism (SADM) whichrnsupports the Solar Array and allows it to rotate atrncommandrnBecause of its highly compact design, it is well-suitedrnfor micro-satellites (i.e. in the 100kg class range), andrnthere are already SEPTA41 flight models currentlyrnbeing used on micro-SAT platforms developed byrnCNES, such as DEMETER and PARASOL.rnA new enhanced version of the first models, calledrnSEPTA41 Evolution, is currently under qualificationrnand will be used for CNES PICARD Satellite, as well asrnby THALES ALENIA SPACE France's.rnThis qualification is performed by Oerlikon Space AGrnand is the final step concluding the transfer initiated inrn2006 after CDR of all SEPTA41 activities originallyrnperformed by SNECMA and now performed by OSZ.rnThis paper presents mechanism performances with arnspecific focus on the torque margin, the lesson learnedrnand the design changes of the second version of thisrnparticular SADA labelled SEPTA 41 Evolution.