Open AccessStudy on afterbody-effects of multi-stage separation at high-speed
Author(s) -
Yang Zheng,
Hongyin Jia,
Pengcheng Cui,
Huan Li,
Xiao-Jun Wu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2083/3/032076
Subject(s) - aerodynamics , mechanics , vortex , projectile , separation (statistics) , drag , shock (circulatory) , stage (stratigraphy) , drag coefficient , computer simulation , materials science , simulation , physics , mathematics , engineering , geology , medicine , paleontology , statistics , metallurgy
The stage separation of high-speed vehicle is complicated at high dynamic pressure, usually accompanied by strong shock and vortex interaction. There exists a strong interaction between first stage and second stage, which called “afterbody-effects”. The aerodynamic mechanism of “afterbody-effects” is studied in this paper based on numerical simulation. The aerodynamic characteristics of a simplified three-dimensional projectile model at different distances between stages at 0° angle of attack is researched with structural mesh. The results show that the vortexes of stages have a significant impact on the aerodynamic characteristics of different stages, As the distance between stages increases, the drag coefficient of the first stage increases, and the drag coefficient of the second stage increases first and then decreases.