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http://dx.doi.org/10.5139/JKSAS.2016.44.4.281

Effects of Time-Varying Mass on the Dynamic Behavior of a Descending Parachute System  

Jang, Woo-Young (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Baek, Sang-Tae (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Myong, Rho-Shin (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Jin, Yeon-Tae (Sam Yang Chemical)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.44, no.4, 2016 , pp. 281-289 More about this Journal
Abstract
Accurate prediction of the trajectory and time of a time-varying mass parachute system remains essential in the mission requiring a precision airdrop to the ground. In this study, we investigate the altitude-varying behavior of a cross-type parachute system designed to deliver a time-varying mass object like flare. The dynamics of the descending parachute system was analyzed based on the Runge-Kutta method of the ordinary differential system. The drag coefficients of the cross-type parachute and flare were calculated by a CFD code based on the incompressible Navier-Stokes equation. Finally, by using a simplified gust wind model in troposphere, the combined effects of gust wind and time-varying mass were examined in detail.
Keywords
Parachute System; Flare; Varying Mass; CFD; Trajectory Analysis;
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