Failure-free operation probability evaluation of a liquid rocket engine emergency protection system during bench tests
Authors: Rudinskiy A.V.
Published in issue: #12(168)/2025
Category: Aviation and Rocket-Space Engineering | Chapter: Design, Construction, Production, Testing, and Operation of Aircraft
The method for assessing the probability of failure-free operation of the emergency protection system (EPS) based on the electromagnetic properties of the combustion products of a liquid-propellant rocket engine (LRE) during bench testing is presented. The amplitude of the signal from the electromagnetic sensor was chosen as the control parameter of the EPS LRE due to the established linear relationship with the pressure before the mixing head of a serial LRE. Based on the maximum values of the amplitudes of the signals from the electromagnetic sensor, the maximum pressures before the mixing head were determined using the zero-dimensional “Load–Strength” model, given the specified probability of failure-free operation of the emergency protection system. The evaluation results justify the possibility of using this EPS (selected control parameters) during bench tests of liquid-propellant rocket engines.
EDN RWQSFT
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