Separation Analysis of Launch Vehicle Crew Escape Systems

Liever, Peter A.; Habchi, Sami D.

doi:10.2514/6.2004-4726

Cited by 3 publications

(1 citation statement)

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“…Moreover, multi-body interferences and separations inevitably occur in such kinds of motions. That introduces many practical problems including store/aircraft separation [1-3], canopy/seat ejection [4], solid rocket booster/space shuttle separation [5,6], cluster bomb projection [7][8][9][10], aircraft tiltrotor motion [11][12][13] etc. Thus, the investigation of complex flow structures, aerodynamic interferences and multi-body separation rules for multi-body motions is significant for the flight safety of aircrafts.…”

Section: Introductionmentioning

confidence: 99%

Structure overset grid method and its applications to simulation of multi-body separation

Zhang

Fan

Yuan

et al. 2015

Sci. China Phys. Mech. Astron.

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This paper proposes an automatic structure overset grid method, which utilizes the hole-surface optimization with one-step searching, wall-surface grid oversetting, and dynamic overset grid approaches to achieve the high adaptability of overset grids for complex multi-body aircrafts. Specifically, based on the automatic structure overset grids, the method first solves the coupling of Navier-Stokes (N-S) unsteady flow equation and 6DOF motion equation, and establishes the multi-body collision model. Then, the numerical simulation of unsteady flow for complex aircrafts' multi-body separation, the simulation of multi-body separating trajectory and the separation safety analysis are accomplished. Thus, the method can properly handle practical engineering problems including the wing/drop tank separation, aircraft/mount separation, and cluster bomb projection. Experiments show that our numerical results match well with experimental results, which demonstrates the effectiveness of our methods in solving the multi-body separation problem for aircrafts with complex shapes. dynamic overset grids, multi-body separations, CFD PACS number(s): 47.85.Gj, 47.85.MCitation: Zhang H R, Fan J J, Yuan W, et al. Structure overset grid method and its applications to simulation of multi-body separation.

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