Magnetic Suspension and Balance System for Wind Tunnel Application

1963 ◽  
Vol 67 (635) ◽  
pp. 717-724 ◽  
Author(s):  
J. E. Chrisinger ◽  
E. L. Tilton ◽  
W. J. Parkin ◽  
J. B. Coffin ◽  
E. E. Covert
Keyword(s):  
Wind Tunnel ◽  
Magnetic Suspension ◽  
Balance System ◽  
Wind Tunnel Data

SummaryIn this article a magnetic suspension and balance system suitable for wind tunnel application is discussed. General considerations are presented that illustrate the nature of the problems to be solved as well as one solution of these problems.Finally some initial wind tunnel data are presented.

Wind tunnel test of Japanese arrows with the JAXA 60-cm magnetic suspension and balance system

2012 ◽  
Vol 53 (2) ◽  
pp. 451-466 ◽  
Author(s):  
Hideo Sawada ◽  
Keisuke Umezawa ◽  
Tomohiro Yokozeki ◽  
Akihito Watanabe ◽  
Takenori Otsu
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Magnetic Suspension ◽  
Balance System

scholarly journals Preliminary Aerodynamic Measurements from a Magnetic Suspension and Balance System in a Low-Speed Wind Tunnel

2018 ◽  
Author(s):  
Mark Schoenenberger ◽  
David E. Cox ◽  
Timothy Schott ◽  
Anne Mackenzie ◽  
Otoniel Ramirez ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Magnetic Suspension ◽  
Low Speed ◽  
Balance System ◽  
Low Speed Wind Tunnel

System modeling and control system performance optimization of magnetic suspension and balance system

2021 ◽  
pp. 1-18
Author(s):  
Wentao Xia ◽  
Zhiqiang Long ◽  
Fengshan Dou
Keyword(s):  
Wind Tunnel ◽  
Performance Optimization ◽  
Control Method ◽  
System Modeling ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Measurement Technology ◽  
Signal Noise ◽  
Fast Tracking ◽  
Balance System

A magnetic suspension and balance system (MSBS) is a kind of aerodynamic test equipment for aircraft. It uses levitation control technology to replace the mechanical support and strain measurement technology in traditional wind tunnel balance. It has the advantage of no model support to interfere with the wind tunnel flow field and make the test environment more realistic, but the MSBS has technical difficulties to be solved. It is difficult to control and stabilize because it has a large suspension gap, nonlinear magnetic field, a long-acting distance of magnetic force, and uses a visual sensor to feedback the position of the controlled object that it has signal noise. At present, there are few studies on the suspension control method and suspension performance of MSBS. In this paper, in order to solve the above technical difficulties, the vertical control of the MSBS is taken as the research object, the electromagnetic field of the vertical coil is modeled and analyzed. A new control algorithm based on a fast-tracking differentiator (FTD) is proposed to solve the signal noise problem in MSBS. The influence of various factors in the control link on the suspension system is analyzed, and its optimization is carried out to improve the performance of the suspension system.

Study of a Magnetic Suspension and Balance System for 40cm×40cm Wind Tunnel Experiments

2000 ◽  
Vol 2000 (0) ◽  
pp. 102
Author(s):  
Takaomi TAKAHASHI ◽  
Tomoyasu TAKENAGA ◽  
Daisuke MORITA ◽  
Syunsuke TANAKA ◽  
Yoshiyuki KAWAMURA
Keyword(s):  
Wind Tunnel ◽  
Magnetic Suspension ◽  
Wind Tunnel Experiments ◽  
Balance System

scholarly journals Measurement of the Aerodynamic Forces Acting on a Non-Spinning Javelin Using an MSBS

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 144
Author(s):  
Takuto Kobayashi ◽  
Kazuya Seo ◽  
Shoya Kaneda ◽  
Kasumi Sasaki ◽  
Kento Shinji ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Angle Of Attack ◽  
Magnetic Suspension ◽  
Pitching Moment ◽  
Aerodynamic Forces ◽  
Balance System

Using the world’s largest magnetic suspension and balance system (MSBS) and a low-turbulence wind tunnel, we successfully measured the aerodynamic forces acting on a non-spinning women’s javelin. It was found that the drag and the lift increased as the angle of attack was increased up to 18°. The pitching moment increased for angles of attack up to about 9°, and then decreased, becoming negative above 12°, indicating nose-down rotation. We used a pseudo supporting rod to simulate a javelin attached to a support, as used in a conventional setup, and confirmed that this interferes with the javelin by creating differences between the aerodynamics forces acting on the javelin with and without the pseudo supporting rod.

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