Cedrat Technologies, innovation in mechatronics

Piezo actuators are commonly used within Fast Steering Mirrors (FSM) for active stabilization, pointing and tracking functions. Such compact mechanisms are requested for Free-Space Optics and Deep Space Optical Communication since they are embedded and offer fast (up to 1kHz) and precise (µRad) tip tilt motion (up to +/-2°). The use of large amplified actuator within mirror telescope is new and become relevant since it displays enough power, reliability and do not fall apart when a failure occurs: steady state design with high stiffness 64N/µm. The purpose of this paper is to present the development and the qualification of the world largest Amplified Piezo Actuator ever integrated in a telescope tip-tilt mirror of more than 2 meters diameter.

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. Starting from the former PYSCHE PAM30 flight project heritage for Deep Space Optical Communication (DSOC), CEDRAT TECHNOLOGIES (CTEC) presents the new design and test results of the P-FSM150S Fast Steering Mirror (FSM) Engineering Models, developed under ARTES project TELCO-B for future FSO constellations.

The current trend in the market to solve long boring bar related chatter problems are passive dampers integrated in the boring bar, which has derived in patents and commercial products; This solution, however, is not feasible in very slender bars or trepanning operations, due to small space available in the tool. Active damping has been tested and indus-trialised in different applications, including machine tool structures, but never in internal turning tools. The application of active damping on boring bars has been proposed in several researches...

SYNJET3C is a CleansKy2 development project aiming at improving the efficiency of Synthetic Jet Actuators (SJA), with a consortium composed of major European actors to this technology which are ONERA, FRAUNHOFER, TRISITEC, and CEDRAT TECHNOLOGIES (CTEC).

This review presents CEDRAT TECHNOLOGIES (CTEC) solutions developed for more than 20 years for Fast & fine Steering Mirrors (FSM) as required in air, space, defence & other embedded or demanding applications: Typical appli-cations are for example Lidar, free space optical communication (FSO) and Laser interferometry.

High Power Synthetic Jet Actuator (SJA) based on compact piezoelectric actuators, have been developed and tested by CEDRAT TECHNOLOGIES (CTEC) and ONERA, under French National funding RAPID from DGA. This publication presents the modelling approach with early breadboarding results, the final design chosen for integration onto an aircraft airfoil mock-up, the performance test results on the SJA device prior integration, and the final aerodynamic performance test demonstration achieved at ONERA wind tunnel test facility.

In many in-situ instruments information about the mass of the sample could aid in the interpretation of the data and portioning instruments might require an accurate sizing of the sample mass before dispensing the sample. In addition, on potential sample return missions a method to directly assess the captured sample size would be required to determine if the sampler could return or needs to continue attempting to acquire sample.