某型直升机空气起动系统管路关键参数研究  

Research on Key Parameters of Air Starting System Pipelineof a Helicopter based on Simulation Analysis

作　　者：谌昱[1] 陈龙 田野 CHEN Yu;CHEN Long;TIAN Ye(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2022年第2期16-22,27,共8页Helicopter Technique

摘　　要：直升机空气起动系统对发动机起动性能具有重要影响,发动机可靠、快速地起动是直升机正常工作和安全飞行的前提。国内直升机领域对于空气起动系统研究较少,文章首次基于数值仿真分析对某型直升机空气起动系统进行研究,建立了空气起动系统模型(包括APU引气特性模型、空气管路模型和空气起动机模型)并开展了仿真分析。通过与发动机台架实测数据对比,验证了模型及建模方法的准确性。之后进一步根据建立的模型进行流场仿真,分析并确定了影响管路损失的关键参数,通过改变管路直径、管路长度及管路夹角,掌握了上述参数对空气起动系统的影响规律,对于后续工程设计具有较高的指导意义。The helicopter air starting system has an important impact on the engine performance.The engine reliable and fast starting is the premise for the normal operation and safe flight of the helicopter.Based on numerical simulation analysis,this paper studied the air starting system of a helicopter,and established an air starting system model(including APU air introduction characteristic model,air pipeline model and air starter model)and carried out the simulation analysis.The accuracy of the model and modeling method was verified by comparing with the measured data of engine bench.Then,based on the established model,the flow field simulation was carried out to analyze and determine the key parameters affecting the loss of the pipeline.By changing the diameter,length and angle of the pipeline,the influence of the above parameters on the air starting system was mastered,which has a high guiding significance for the subsequent engineering design.

关 键 词：起动系统 空气起动机 管路损失 影响规律 

分 类 号：V233.6[航空宇航科学与技术—航空宇航推进理论与工程]