Analytical, experimental, and numerical methods for the analysis of strength and service life of rocket engines

Abstract

The paper presents the analysis of strength, service life, and structural integrity of rocket space engines that is based on the combined application of traditional and new experimental, analytical, and numerical methods of calculation, testing, and diagnostics of the state and integrity of their load-bearing components at all stages of the engine life cycle. A computerized data bank on the parameters of the design equations, based on the results of special experiments in laboratory, bench, and field conditions was created. Mathematical and physical modeling was used to conduct refined strength analysis for the most critical components of the rocket engine. The finite element analysis of stress-strain response of the engine critical components to loading regimes was performed. Safety factors for strength, plasticity, and service life of load bearing components were established.