Space
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DTT35XS new compact piezo tilt mechanism
9 January 2002
The DTT35XS is a new piezo mechanism coming from CEDRAT TECHNOLOGIES lab in February 2002. It comes from a development for space needs defi ned with the CNES (the French space agency), and for which a first application was found in the frame of “PHARAO”. This mechanism is based on two pairs of APA35XS, Amplifi ed Piezo Actuators displaying 35 µm of stroke each, arranged in cross configuration. The mechanism allows both a defl ection of +/- 2 mrad around the X and Y axis and a vertical displacement of 35 µm in the Z direction.
High power synthetic jet actuator
19 June 2023
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.
Highly dynamic & high precision self balanced optical mechanism
19 June 2023
Ongoing developments of instruments reveal the need for fast and precise mechanisms [1]. These requirements are all the more significant when large payloads of hundreds grams, such as mirrors, optical plates, corner cubes or antennas are involved in the motion. Indeed, highly dynamic kinematics coupled with large inertia lead to parasitic reaction forces that interfere on the accurate measurement.
Hysteresis characterization in piezoceramic stack actuators and its influence on vibration and noise reduction in helicopters using actively controlled flaps
19 June 2023
In this study, a characterization of hysteresis in a piezoceramic stack actuator similar to those employed in an actively controlled flap (ACF) system is performed to assess the effects of hysteresis on system performance. The effect of unmodeled actuation hysteresis may significantly reduce vibration and noise reduction capabilities. A hysteresis model based on the classical Preisach model has been developed from experimental data.
Scanning piezo mechanisms Rosetta Fligth model
19 June 2023
The MIDAS (Micro Imaging Dust Analysis System) instrument jointly developed by IWF Graz (AT) and the Solar Space Division of ESA/ESTEC (NL) will flow on ROSETTA and will analyse the dust of the 46P/Wirtanen cometa using an Atomic Force Microscope (AFM).
Compact sensitive piezoelectric mass balance for measurement of unconsolidated materials in space
19 June 2023
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.
