Robustness of Astrix Fiber Optic Gyros in space radiative environment
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When developing the Fiber Optics Gyro Astrix™ family, Airbus and Ixblue faced the problematics of the possible radiation effects on optical and opto-electronics parts. After bibliographic research on the subject, selection of parts was made according to existing knowledge, and batch qualification tests performed to quantify the radiation effects. On-ground test results were introduced in worst case optical budget for the optical loop dimensioning. Several years later, following consequent in-orbit data gathering, we can assess that radiation effect are barely noticeable and that inertial performances remain tremendously stable. The careful design of the Astrix optical loop and the proper selection of opto parts were mastered key factor for such an in-flight success.
KeywordsAstrix Gyroscope Optical Fiber Radiation
Thanks to Pléiades, Spot 6 and 7, and Galileo teams, for giving us visibility on in-orbit technological TMs, this paper could not exist without their precious contribution. Thanks again to Cnes and ESA agencies, for supporting the Astrix family development and qualification all these years, and for continuing to support this fabulous technology.
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