The New Hybrid Meta-Model by Using DOE and RSM for Liquid Propellant Engine’s Feed System Optimization

Ali Mohamadi, Hamid Reza; Naseh, Hassan; Ommi, Fathollah

doi:10.22034/jast.2023.367044.1135

The New Hybrid Meta-Model by Using DOE and RSM for Liquid Propellant Engine’s Feed System Optimization

Document Type : Original Article

Authors

Hamid reza Ali mohamadi ¹

Hassan Naseh ²

Fathollah Ommi ³

¹ Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

² Assistant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

³ of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

10.22034/jast.2023.367044.1135

Abstract

The present paper strives for optimization of the Liquid-Propellant Engine (LPE)’s feed system. To this end, the new hybrid meta-model methodology by utilizing the Design of Experiment (DOE) method and the Response Surface Method (RSM) were developed and implemented as two effective means of designing, analyzing and optimizing. The input design variables, constraints, objective function, and their surfaces were identified. Then, the design and development strategy was clarified by utilizing the combination of RSM, DOE and regression analysis. Hence, 64 different experiments were carried out on the RD-253 propulsion system. The response surface curves were drawn and the related objective function equation was obtained. The Analysis of Variance (ANOVA) results indicate that, the developed hybrid model is capable to predict the responses adequately within the limits of input parameters. In addition, the precision of the model was assessed by comparing with the existing samples and the output was interpreted and analyzed that shown highly accuracy. Therefore, desirability function analysis has been applied to LPE’s feed system for achieving to maximize the power and minimize the weight, simultaneously. Finally, conﬁrmatory tests have been conducted with the optimum parametric conditions to validate the optimization techniques. In conclusion, the methodology capability is to optimize the LPE system, an 11% increase in the power to feed system weight ratio and a 2% increase the thrust to engine weight ratio. These values are considerably large for LPE design.

Keywords

New Hybrid Meta-Model

Liquid Propellant Engine (LPE)

Feed System

Design of Experiment (DOE)

Response Surface Method (RSM)

Subjects

Aerospace systems Design

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