LI Jia-ni 1,2 , QU Gao-min 3 , FENG Xing 1 , LI Ji-guang 3 , SHAO Peng-yuan 3 , TAN Jian 3.Modeling and Analysis of System Effectiveness Evaluation of Missile Turbojet/Turbofan Engines[J].航空发动机,2024,50(6):26-31
Modeling and Analysis of System Effectiveness Evaluation of Missile Turbojet/Turbofan Engines
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Key Words:missile turbojet engine  missile turbofan engine  index system  system effectiveness evaluation  quantitative analysis
Author NameAffiliation
LI Jia-ni 1,2 , QU Gao-min 3 , FENG Xing 1 , LI Ji-guang 3 , SHAO Peng-yuan 3 , TAN Jian 3 1. AECC Hunan Aviation Powerplant Research InstituteZhuzhou Hunan412002China 2. College of Mechanical & Electrical EngineeringNanjing University of Aeronautics and Astronautics Nanjing 210016China 3. School of Aircraft EngineeringXi'an Aeronautical InstituteXi'an 710077China 
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Abstract:In order to evaluate the system effectiveness of missile turbojet/turbofan engines, a complete set of missile turbojet/turbofan engine system effectiveness evaluation index system and system effectiveness evaluation model were constructed in a hierarchical theory. The system effectiveness of missile turbojet/turbofan engines was characterized by three aspects: availability, dependability, and capability, X sub-items were used to reflect the indexes of the three aspects, Hierarchy theory was used to determine the influence weights of different indexes to the engine effectiveness, and the model for missile turbojet/turbofan engine system effectiveness evaluation was established. Quantitative evaluation and comparative analysis of the effectiveness of 8 existing turbojet/turbofan engines were conducted. The results show that the effectiveness of the turbofan engine is greater than that of the turbojet engine, the thrust to weight ratio and fuel economy are important factors affecting capability, verifying the effectiveness and feasibility of the model. This study can provide strong decision support for future new programs and improvement programs for missile turbojet/turbofan engines.
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