收放伞绳对十字型伞静态气动特性影响的数值模拟研究

Translated title of the contribution: Numerical of Effect of Suspension Line Length of Retraction of the Cruciform Parachute on the Static Aerodynamic Performance

Jun Hu, Fei Yu, Yong Yu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In order to study the steerability and aerodynamic characteristics of cross parachute as an active control device, a finite element model of cross parachutes with a different retracting ratio δ (0, 10.0%, 12.5%, 15.0%, 20.0% and 25.0%) was established. Numerical simulation based on arbitrary Lagrange-Euler method was made, and the effect of asymmetry of canopy caused by the retraction of the suspension line on aerodynamic performance was analyzed. Results are as follows. The drag coefficient of the cross parachute decreases with the increase of the suspension retraction ratio, with different angles of attack (0°,5°,10°). The mean drag coefficient of cross parachute decrease with the increase of the suspension retraction ratio δ. The peak value of transient lift of the cross parachute increases with the increase of the suspension retraction ratio δ. The direction of the lift force generated by suspension retracting is always changing, which has a strong time-varying characteristic, pointing from the line retraction to the other side of the cross parachute.

Translated title of the contributionNumerical of Effect of Suspension Line Length of Retraction of the Cruciform Parachute on the Static Aerodynamic Performance
Original languageChinese (Traditional)
Pages (from-to)10-17
Number of pages8
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume44
Issue number1
DOIs
Publication statusPublished - Jan 2024

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