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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
MR Strut of Steward Platform for Vibration and Shock Isolation
 Macháček, Ondřej ; Šindelář, Martin (referee) ; Mazůrek, Ivan (advisor)
The thesis deals with design magnetorheological strut of vibration isolation adapter for cosmonautics. For its optimization is necessary to create several virtual models. The dynamic model of the mechanism - the Stewart platform, rheological model for determining the damping force of MR damper and model of the magnetic circuit to guarantee the required intensity in the gap. These models, along with controls models that are primarily concerned with strength calculations, will help with design. Designing using virtual models requires constant monitoring and verification. It is a rather broad topic including eliminate vibration also kinematics, dynamics, hydraulics, pneumatics and last but not least electronics and magnetism. It is necessary to communicate with experts in their field and use their knowledge and experience to create, but also to control of the individual models. The thesis was created in cooperation with Honeywell Aerospace Division (ESA).
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Příspěvek k dozimetrii a mikrodozimetrii na palubách kosmických lodí
 Spurný, František
Onboard spacecraft radiation fields are composed mostly high energy charged particles with rather important component of heavier particles with high linear energy transfer (LET). Their biological effects are still not fully known, the studies of dosimetric and microdosimetric studies can therefore contribute significantly to deeper knowledge of effects mentioned. We started such studies many years ago. In this contribution results obtained onboard spacecraft during several last years are presented
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