| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2015: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2014: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
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| Outline of Final Research Achievements |
A new wind-tunnel system for spinning body such as golf ball was developed to measure hydrodynamic forces acting on the body and observe phenomena around the body continuously and accurately. It was characterized by using magnetic suspension for the noncontact support and rotation of the body. In the newly developed system, the test section area was approximately three times that of the conventional system. A mathematical model for the system was derived based on predictions by magnetic fields analysis and measured characteristics. Stable noncontact suspension and rotation of the body were achieved in the developed system. Then wind tunnel tests were carried out. In addition, flux-path magnetic suspension systems using flux concentration and a self-spinning floator were fabricated to realize larger-size wind tunnel systems without much increase of the consumed electrical power in future.
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