Affiliation:
1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Abstract
The reefing ratio for the first stage of a parachute limits the reefing ratio for the subsequent stages, so its minimal effective value is very important. In this paper, an empirical formula is derived to calculate the minimal effective reefing ratio. The empirical parameters are obtained by the arbitrary Lagrangian–Eulerian/fluid–structure interaction (ALE/FSI) method. By using the FSI method, the typical flow and structure fields of effective and ineffective reefed parachutes are revealed. The numerical results including drag characteristics and final shape are very consistent with wind tunnel tests. The curves of the empirical parameters with reefing ratios are obtained. The minimal effective reefing ratio obtained by the empirical formula is consistent with that of the numerical results, which shows that the empirical formula has high accuracy.
Publisher
Vilnius Gediminas Technical University
Reference15 articles.
1. Development of an 80-ft-diameter ribbon drogue parachute for the NASA X-38 vehicle
2. Overview of the Crew Exploration Vehicle Parachute Assembly System (CPAS) Generation I Main and cluster development test results;Bledsoe, K.,2009
3. A NUMERICAL STUDY OF PARACHUTE INFLATION BASED ON A MIXED METHOD
4. A new method of complicated folded fabric modeling;Cheng, H.;Journal Harbin Institute Technology,2012
5. Influence of reefing ratio on inflation performance of ringsail parachute;Gao, S. Y.;Chinese Space Science and Technology,2014