飞机环控系统空气循环机仿真建模及试验校核  

Modeling and validating of air cycle machine in aircraft environmental control system

作　　者：孟繁鑫 孙佳宁 周月[1] 高赞军[1] 程定斌 MENG Fanxin;SUN Jianing;ZHOU Yue;GAO Zanjun;CHENG Dingbin(Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration in Nanjing Engineering Institute of Aircraft Systems,Nanjing 211106,Jiangsu,China;Nanjing Aircraft Systems Science and Technology Limited Company,Nanjing 211102,Jiangsu,China)

机构地区：[1]南京机电液压工程研究中心航空机电系统综合航空科技重点试验室,江苏南京211106 [2]南京机电科技有限公司,江苏南京211102

出　　处：《化工学报》2020年第S01期328-334,共7页CIESC Journal

摘　　要：建立了飞机环境控制系统中压气机-涡轮-风扇式空气循环机的数学模型并开发了性能仿真模型;提出了性能试验原理及方法并开展了性能试验获得了设计工况下测试数据;通过对比不同转速下压气机增压比和效率特性、不同膨胀比条件下涡轮的温降特性、风扇压升特性等仿真结果与试验数据,修正了所建仿真模型相关参数并校核了模型有效性。结果表明,提出的仿真建模方法能够对空气循环机进行准确计算,经修正后仿真误差可以控制在±10%以内,仿真精度满足飞机环境控制系统工程设计要求,对环控系统及部件研制具有重要意义。Mathematical models of compressor-turbine-fan air cycle machine were established in aircraft environmental control system.The simulation models of air cycle machine were developed.The performance test principles and procedures are put forward for the product and performance tests are carried out to obtain the performance data under design conditions.By comparing simulation results and experimental data for compressor pressure ratio and efficiency characteristics,turbine temperature drop,fan pressure rise,the simulation model was corrected and validated.Results show that the modeling method provided in this paper can calculate the performance of the air cycle machine accurately with the±10%simulation error.The simulation precision meets the requirements of aircraft environmental control system engineering design and it is helpful to develop environmental control system and its components.

关 键 词：热力学 计算机模拟 动态建模 试验校核 空气循环 环控系统 

分 类 号：V245.3[航空宇航科学与技术—飞行器设计]