Evolution of an actuator family

Paul Stigell, Pekka Kyrenius, Tomi Ylikorpi, Kai Viherkanto

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    VTT Automation got involved in spaceflight engineering in the mid-1980's and helped in the formation of the Finnish space industry. The first design was a worm gear mechanism that opened an auxiliary solar panel for the ASPERA instrument on board the Soviet Phobos spacecraft. Next came the Solar Wind ANisotropy (sWAN), including a 2-axis scanning mechanism, on board ESA's Solar and Heliospheric Observatory (SOHO). Two SWAN sensor units cover a field of view of nearly 4 pi VTT Automation developed scanning mechanisms for two instruments on board NASA's Cassini spacecraft, namely the ACT actuator for the CAPS instrument and the TT turntable for the MIMI/LEMMS instrument. The actuator concept was further developed in ESA's MPRA project. A version of ACT actuator is currently being manufactured for NASA's Two Wide Angle Imaging Neutral Atom Spectrometers (TWINS) mission.
    Original languageEnglish
    Title of host publication34th Aerospace Mechanisms Symposium
    Subtitle of host publicationNASA/CP-2000-20989
    Pages251 - 263
    Publication statusPublished - 2000
    MoE publication typeA4 Article in a conference publication
    Event34th Aerospace Mechanisms Symposium - Greenbelt, United States
    Duration: 10 May 200012 May 2000

    Publication series

    SeriesNASA Conference Publication (CP)


    Conference34th Aerospace Mechanisms Symposium
    Country/TerritoryUnited States


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