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Numerical Analysis on Separation Dynamics of Strap-On Boosters in the Dense Atmosphere

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Authors
Choi, Seongjin; Ko, Soon-Heum; Kim, Chongam; Rho, Oh-Hyun; Park, Jeong-joo
Issue Date
2001-01
Publisher
The Korean Society for Aeronautical & Space Science
Citation
KSAS International Journal Vol.2 No.2, pp. 1-18
Keywords
공학Chimera Overlaid GrSeparation DynamicsRigid Body Equations of Motion
Abstract
A numerical technique for simulating the separation dynamics of strap-on boosters
jettisoned in the dense atmosphere is presented. Six degree of freedom rigid body equations
of motion are integrated into the three-dimensional unsteady Navier-Stokes solution
procedure to determine the dynamic motions of strap-ons. An automated Chimera overlaid
grid technique is introduced to achieve maximum efficiency for multi-body dynamic motion
and a domain division technique is implemented in order to reduce the computational cost
required to find interpolation points in the Chimera grids. The flow solver is validated by
comparing the computed results around the Titan N launch vehicle with experimental data.
The complete analysis process is then applied to the H- II launch vehicle, the central
rocket in japans space program, the CZ-3C launch vehicle developed in China and the
KSR-m, a three-stage sounding rocket being developed in Korea. From the analyses,
separation trajectories of strap-on boosters are predicted and aerodynamic characteristics
around the vehicles at every time interval are examined. In addition, separation-impulse
devices generally introduced for safe separation of strap-ons are properly modeled in the
present paper and the jettisoning force requirements are examined quantitatively.
Language
English
URI
http://hdl.handle.net/10371/82295
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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