Volume : V, Issue : X, October - 2015

STRESS STRAIN ANALYSIS OF ROCKET ENGINE THRUST CHAMBER

Santhini S Lal, A. K. Asraff, Shobha Elizebath Thomas

Abstract :

 High performance rockets are developed using cryogenic technology. High thrust cryogenic rocket engines operating at elevated temperatures and pressures are the backbone of such rockets. The thrust chambers of such engines which produce the thrust for the propulsion of the rocket can be considered as structural elements. Often double walled construction is employed for these chambers for better cooling and enhanced performance. The double walled rocket engine thrust chamber investigated here has its hot inner wall faicated out of a high thermal conductive material like copper alloy and outer wall made of stainless steel. Inner wall is subjected to high thermal and pressure loads during operation of engine due to which it will be in the plastic regime. Major reasons for the failure of such thrust chambers are low cycle fatigue, creep and thermal ratcheting. Elasto plastic material models are required to simulate the above effects through a cyclic stress analysis. This paper gives the details of cyclic stress analysis carried out for a thrust chamber using the Chaboche nonlinear kinematic hardening plasticity model.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Santhini S Lal, A.K.Asraff, Shobha Elizebath Thomas Stress Strain Analysis of Rocket Engine Thrust Chamber Indian Journal of Applied Research, Vol.5, Issue : 10 October 2015

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