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http://dx.doi.org/10.5139/JKSAS.2019.47.11.761

Numerical Study about Behavior of an Ejecting Projectile for Varying Initial Conditions  

Jo, Sung Min (Korea Advanced Institute of Science and Technology)
Kwon, Oh Joon (Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.47, no.11, 2019 , pp. 761-767 More about this Journal
Abstract
In the present study, analyses of initial behavior of an air-launched projectile for varying initial conditions are performed by coupling computational fluid dynamics and 6 degrees of freedom calculations. Accuracy of the present numerical methods is validated by comparing the present result with the measured data. Launching safety analyses are carried out for various ejecting conditions by considering weight of the projectile and magnitude of front and rear ejector forces as the major parameters of initial behavior of the projectile. A response surface of the projectile launching safety is obtained in the range of the major parameters. In all the conditions of zero rear ejector force, unsafe launching behavior is observed. As the weight of the projectile decreases, the initial launching behavior becomes more unsafe.
Keywords
Computational Fluid Dynamics; Ejecting Projectile; Launching Safety; Unstructured Overset Mesh; 6 Degrees of Freedom;
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Times Cited By KSCI : 3  (Citation Analysis)
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