A 1-D Start-up Analysis for Liquid Rocket Engine Powerpacks

Abstract

A numerical study has been performed to investigate 1-D steady/unsteady start-up characteristics for liquid rocket engines using SINDA/FLUINT. First, in order to verify the analysis of cryogenic fluid, RL-10 engine having expander cycle is selected as a target of present study. Pressure drop in cooling channels was simulated through orifice devices. Satisfactory agreement has been obtained through the comparison of the numerical analysis and the experimental results. Based on these results, a start-up analysis of RD-8 having staged combustion cycle has been performed. As comparison of the numerical analysis and the experimental results, tendency of start-up characteristics had good agreements. This methodology of present study will be able to be used for the analysis of liquid rocket engines as a future work.

Numerical Simulation of Chemical Propulsion Systems: Survey and Fundamental Mathematical Modeling Approach

“…Korea Aerospace University (KAU) also developed a simulation program using two kinds of LPRE, a steady state of staged-combustion cycle and a transient state of open-cycle LPREs, and modulized each component of the program [59][60][61][62]. In addition, to analyze the start-up characteristics of a staged-combustion engine, a staged-combustion engine power pack has been developed at Chungnam National University (CNU) [63,64]. As small-size LPRE has become necessary recently [65], Inha University also developed a simulation program focusing on an electric-pump-fed cycle engine and verified it with a water flow test [66,67].…”