Development of a magnetic suspension and balance system for supersonic wind tunnels

Yoshiki Takagi, Hideo Sawada, Shigeru Obayashi

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


The Magnetic Suspension and Balance Systems for φ85 mm suction type supersonic wind tunnel (φ85 mm-MSBS) that can suspend the model against starting load without mechanical support is under development. To implement fast response control system, a new optical position sensor was built and calibrated. The calibration results confirm measurement frequency of 1.24 kHz and resolutions of 3.3 μm and 0.0081 deg for translational and rotational direction, respectively. The 1.24 kHz-synchronous control system which is composed of proportional-integral (PI) controller plus the double phase advancer enable the model to be kept accurately in the center of the test section within the displacement of 4.5 μm and 0.013 deg and make rise time of step response faster by 30% than an existing MSBS. Wind tunnel test result with total pressure 1.0 bar for the φ13mm-cone-cylindrical model poses the difficulty of attitude angle control. The control simulation using aerodynamic force evaluated from the experiment suggests two solutions.

Original languageEnglish
Title of host publication52nd Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624102561
Publication statusPublished - 2014
Event52nd Aerospace Sciences Meeting 2014 - National Harbor, United States
Duration: 2014 Jan 132014 Jan 17

Publication series

Name52nd Aerospace Sciences Meeting


Conference52nd Aerospace Sciences Meeting 2014
Country/TerritoryUnited States
CityNational Harbor


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