The filter wheel (FW) assembly (FWA), developed by the CBK Institute, is one of the critical subsystems of the wide field imager (WFI) instrument on board the Advanced Telescope for High Energy Astrophysics—mission of the ESA Cosmic Vision 2015-25 space science program (launch scheduled around 2035). The instrument has to collect soft x-rays with very high quantum efficiency, thus WFI requires extremely thin optical blocking filter (OBF). Due to its thickness (∼150 nm) and large area (∼170 mm × 170 mm) needed to achieve a 40 ′ × 40 ′ instrument field of view, the filter is extremely vulnerable to acoustic loads generated during Ariane 6 rocket launch. On the other side, FW mechanism has to provide high overall reliability, so it is more favourable to launch the instrument in atmospheric pressure (without vacuum enclosure for filter protection). Design efforts of the FW subsystem were focused on two issues: providing maximal possible sound pressure level suppression and smallest possible differential pressure across the OBF, which should prevent filters from damaging. We describe the design of a reconfigurable acoustic-demonstrator model (DM) of WFI FWA created for purposes of acoustic testing. Also, the acoustic test campaign is described: test methodology, test criteria, and results discussion and its implication on future FWA design. In general, tests conducted with the FWA DM showed that current design of WFI is feasible and the project can be continued without introducing a vacuum enclosure, which would significantly increase system complexity and mass.
Extraterrestrial geological exploration is the endeavor that most often requires breaking through the top layer of the regolith in order to transport sensors beneath its surface. One of the tools that enable this are planetary penetrators. The Laboratory of Mechatronics and Space Robotics has been developing this type of devices for many years. This paper present the concept of a new design of the electromagnetic driver for the MOLE type penetrator. It is developed in CBK under the grant of The National Centre for Research and Development (NCBiR) (Contract no. PBS3/A6/23/2015) “Planetary penetrator for geological investigations on a space mission”.
Space penetrator is a device used to get beneath the surface of the celestial body in order to carry out scientific investigation. It is often forced to operate in regolith of unknown properties and this makes the ability to adapt to unforeseen conditions of the space environment its highly demanded feature. This paper describes the design concept of planetary penetrator control electronics system that allows precise control of hammering mechanism impact energy and thus is able to adjust to variety of operation modes. It is developed in CBK under the grant of The National Centre for Research and Development (NCBiR) (Contract no. PBS3/A6/23/2015) “Planetary penetrator for geological investigations on a space mission”.
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