Experimental and Numerical Investigation of the Effect of Geometric Parameters on Flexible joint Nonlinear Behavior for Solid rocket motor Trust Vector Control

Authors

1 Department of Mechanical and Aerospace Engineering, Malek Ashtar University of Technology

2 Department of Mechanical and Aerospace Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran

Abstract

Solid rocket motors are propulsion devices for both satellite launchers and missiles. Wich require guidance and steering to fly along a programmed trajectory and to comensate for flight disturbances.In most solid rocket motor. Thrust vector control (TVC) is required.one of the most efficeient methods of TVC is flexible nozzle system. The flexible nozzle consists of a flexible joint made of an elastometric material alternating with reinforcement rigns of metallic material. In this paper nonlinear simulation of flexible joint developed. The flexible joint is the most widely used device in modern nozzle.to obtain reliable design and reduce development risk nonlinear finite element analysis was performed to simulate the flexible joint structural behavior in bench test conditions. The analysis predictions show good agreement with the test. Considering the importance of geometric parameters, the effect of changing geometric parameters on the flexible joint behavioral behavior has been investigated with the help of finite element method, and a suitable flexible joint design has been proposed with the help of changing geometric dimensions with considering different input parameters.

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References

[1] Woodberry RHF (1974) Solid rocket thrust vector control. NASA SP-8114 4-17.
[2] Anon, Final report-development and demonstration of an omni axial flexibleseal movable nozzle for thrust vecotor control.thiokol chemical crop.1967
[3] RamMohan V (2012) Design modeling and experimental validation of typical flex bearing joint of rocket motor nozzle. PHD thesis.
[4] Bapi Raju V, Balakrishna Murthy V, Swetha Srinivas J (2013) Non–linear analysis of composite beam. IJAMM&C 3.
[5] Eswara Kumar A, balakrishna Murthy V, chandra Mohan,effect of shim percentage on non-linear static behavior of flex seal of rocket nozzle.Material today:proceedings 2,pp.1427-1434, 2015.
[6] Prakash D.a, Balakrishna Murthy V.b, Effect of Material Mismatch on Static behavior of Flex Seal, Materials Today: Proceedings 4, pp 2290–2297, 2017.
[7] Xiaoguang Zhang, Yu Liu, and Junxue Ren, Nonlinear finite element analysis of the SRM Flexible Joint, AIAA, 2012.
Journal of Solid and Fluid Mechanics
Volume 7, Issue 4
January 2018
Pages 197-207

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