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

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 pi...

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Bibliographic Details
Published in:	Proceedings Vol. 49; no. 1; p. 144
Main Authors:	Takuto Kobayashi, Kazuya Seo, Shoya Kaneda, Kasumi Sasaki, Kento Shinji, Shogo Oyama, Hiroyuki Okuizumi, Yasufumi Konishi, Hiroaki Hasegawa, Shigeru Obayashi
Format:	Journal Article
Language:	English Japanese
Published:	MDPI AG 15-06-2020
Subjects:	aerodynamic forces javelin MSBS wind tunnel test
Online Access:	Get full text
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Summary:	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.
ISSN:	2504-3900
DOI:	10.3390/proceedings2020049144