Geometric Parameters Optimization for Tank Lightweight Design

被引：0
|
作者：
Xin T. [1 ]
Wang H. [2 ]
Cui C. [2 ]
Zhao J. [3 ]
Han X. [1 ]
机构：
[1] Graduate School, Space Engineering University, Beijing
[2] Department of Aerospace Science and Technology, Space Engineering University, Beijing
[3] Department of Electronic and Optical Engineering, Space Engineering University, Beijing
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2019年 / 53卷 / 07期
关键词：
Ellipsoid norm; Optimal design; Propellant tank; Stress analysis; Tank radius;
D O I：
10.7652/xjtuxb201907021
中图分类号：
学科分类号：
摘要：
To effectively reduce the mass of propellant tank and improve the payload carrying capacity of liquid rocket, an optimal method for the geometric parameters of propellant tank is proposed. Establishing the ellipsoid cylinder tank model and following theory of material mechanics, the stress of tank structure is analyzed, and the formulas of the meridional stress and hoop stress of tank bottom, cylinder and roof are derived. On the premise of ensuring the reliability of tank stress intensity, the maximum equivalent stress of tank is defined according to the stress distribution characteristics of tank and material strength criterion, and then the wall thickness parameters required for the tank design are determined. Obeying the design requirements of the propellant tank, the constraint relation between the tank mass and the design parameters are determined, and the tank radius and ellipsoid norm are optimally designed with the optimal objective to minimize the tank mass. Taking the design parameters of a rocket tank as an example, the mass of optimized tank and the original mass are comparatively analyzed. It is revealed that when the radius is unchanged and the ellipsoid norm is lowered by 0.02, the tank mass is then reduced by 5.7 kg; when the ellipsoid norm is unchanged and the radius increases 0.02 m, the tank mass is then reduced by 15.2 kg. © 2019, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：153 / 159
页数：6
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