Numerical simulation of a UAV impacting engine fan blades  

作　　者：Jingyu YU Bingjin LI Jun LIU Naidan HOU Yingchun ZHANG Yafeng WANG Yulong LI 

机构地区：[1]School of Aeronautics,Northwestern Poly technical University,Xi'an 710072,China [2]Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China [3]Shanghai Aircraft Airworthiness Certification Center of CAAC,Shanghai 200335,China [4]China Aircraft Strength Research Institute,Xi'an 710065,China

出　　处：《Chinese Journal of Aeronautics》2021年第10期177-190,共14页中国航空学报（英文版）

基　　金：supported by the Civil Aviation Security Capacity Building Fund;the Civil Aircraft 13th Five Year Pre Research Project(No.MJ-2018-F-18)。

摘　　要：A 3D digital model of a small Unmanned Aerial Vehicle(UAV)is obtained by using the method of scanning reverse modeling and joint mapping.A numerical simulation of a small UAV strikes on rotary engine blades,presented in this paper,was performed with a Transient Nonlinear Finite Element code PAM-CRASH software.A test of motor strike on plate was developed and the dynamic response of the plate were obtained to validate the numerical simulation method of a UAV strike on blades.Based on this,dynamic damage response caused by UAV on the engine blades were studied.It is indicated that the impact process between the UAV and a single blade can be divided into two typical stages:cutting and impact.Cutting mainly leads to the failure of the leading edge material,and impact mainly leads to the plastic deformation of the blade.At the same time,it is compared with the damage impacted by bird with the same mass.For the same mass of bird and UAV,the damage caused by UAV striking fan blade is more serious,and 1.345 kg UAV striking fan blade of typical civil aviation engine is enough to cause damage to flight safety.

关 键 词：AIRWORTHINESS Bird impact Engine fan blade Explicit dynamics UAV 

分 类 号：V279[航空宇航科学与技术—飞行器设计]