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Computational drag and magnus force reduction for a transonic spinning projectile using passive porosity

✍ Scribed by Shing-Chung Onn; Ay Su; Chieng-Kuo Wei; Chung-Chuan Sun

Book ID: 104266826
Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 753 KB
Volume: 190
Category: Article
ISSN: 0045-7825
DOI: 10.1016/s0045-7825(01)00210-9

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✦ Synopsis

The aerodynamic performance of a spinning secant-ogive-cylinder-boattail (SOCBT) projectile in the transonic regime is numerically investigated. In the present study, a porous surface is applied to improve the projectile performance. The computed results show that the porous surface on the boattail not only reduce the total drag by 17.35% but also alleviate the magnus force by 98.43%. For the case that the porous surface is on both the boattail and the base of a SOCBT projectile, the total drag and the magnus force can be further reduced by 23.49% and 99.94%, respectively.

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