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http://dx.doi.org/10.5139/JKSAS.2006.34.11.001

A Steady Method of Damping Coefficient Prediction for Axisymmetric Projectiles  

Park, Soo-Hyung (건국대학교)
Kwon, Jang-Hyuk (한국과학기술원)
Yu, Yung-Hoon (건국대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.11, 2006 , pp. 1-8 More about this Journal
Abstract
A steady prediction method is presented to compute dynamic damping coefficients for axisymmetric projectiles. Viscous flow analysis is essential to the steady method using a zero-spin coning motion in the inertial coordinate frame. The present method is applied to compute the pitching moment and the pitch-damping moment coefficients for the Army-Navy Spinning Rocket. The results are in good agreement with the parabolized Navier-Stokes data, range data, and unsteady prediction data. Predictions for Secant-Ogive-Cylinder configurations are performed to investigate effects of afterbody geometries. To investigate the geometrical effect and flow physics, the longitudinal developments of the coefficients are examined in detail.
Keywords
CFD; Unsteady Flow; Steady Method; Axisymmetric Projectiles; dynamic damping coefficients;
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