大振幅非定常实验数据表达与数学模型研究  

Study of Data Expression and Mathematical Modelling for Unsteady Experiment of a Model Pitching in Large Amplitude

作　　者：黄达[1] 李志强[1] 吴根兴[1] 

机构地区：[1]南京航空航天大学

出　　处：《空气动力学学报》1999年第1期68-72,共5页Acta Aerodynamica Sinica

摘　　要：本文采用一种新颖的方法，对大振幅非定常实验数据进行处理，建立了气动导数数据库，在此基础上，运用Ｄｕｈａｍｅｌ积分法，计算了模型迎角按任意规律变化时的非定常空气动力特性。计算结果与实验结果比较表明，两者符合很好。A new method is used to process the experimental data of a model pitching in large angle of attack.The data base of dynamic aerodynamics is established.On the base of this,the unsteady aerodynamic characteristics of a model pitching in the large angle of attack in an arbitary law is calculated by the Duhamel integral.An excellent agreement between numerical and experimental results is obtained.

关 键 词：非定常流 数据处理 数学模型 飞机 气动导数 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]