New space giant constellations based on Free-Space Optical Communication (FSO) are a new challenge from many perspectives. Considering the mandatory cost efficiency, with repeatability of performances, and reliability with no defect at customer integration, requires an upheaval in space production and acceptance test methods, when the quantities are beyond several thousands of units. In this publication CEDRAT TECHNOLOGIES (CTEC) presents the design and test results of the P-FSM150S Pointing Ahead Mechanism (PAM) and M-FSM45 Fast Steering Mirror (FSM) Engineering Models, developed under ARTES project TELCO-B for future FSO constellations. The specific cost-efficient hardware design is presented, dedicated to very large quantities to be manufactured, together with the performance test results over a preliminary batch of EM’s production.
The purpose of this paper is to present the development of a new dual axis (tip-tilt) mechanism, with integrated SiC mirror, designed for the Jet Propulsion Laboratory (JPL) and integrated inside their Deep Space Optical Communication (DSOC) module of incoming Psyche mission to be launched in 2022. This paper presents the design, assembly and tests of the Engineering (EM), Qualified (QM) and Flight (FM) models. Regarding the design phase, an emphasis is put on the mirror design and computations to ensure that the required flatness would be maintained after the integration and the part would withstand the thermal/mechanical environment. The optical measurement performed after assembly is also presented. The qualification results for a new alpha-case removal process for titanium parts are presented. Test results are especially interesting regarding the temperature behavior of the mechanism, and impact on the stroke and strain gage sensors’ feedback.
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