华中科技大学学报（自然科学版）Issue(8)：98-102,5.DOI:10.13245/j.hust.150821
基于八占位法的直升机旋翼升力建模研究
Research on modeling for main rotor thrust of helicopter based on eight-si te-occupancy method
摘要
Abstract
In order to establish main rotor thrust model of helicopter with higher real‐time and preci‐sion ,based on blade element momentum theory ,taking ideal‐twist blade as an example ,a model for computing induced velocity of main rotor was presented .On the premise of considering flapping mo‐tion of blade ,using eight‐site‐occupancy method and the induced velocity model presented ,taking blade pitch angle of tip as manual input ,an iterative calculation process with initial values about main rotor thrust ,airframe velocity and induced velocity was proposed .Experimental results show that by contrasting practical flight data with simulation curves from the calculation process ,their roll charac‐teristic curves of airframe have the same tendency ,their main rotor coefficient curves have higher de‐gree of fitting ,and each dynamic simulation parameter can instantly and reasonably react to the manu‐al input ,w hich can respectively verify the reliability ,accuracy and real‐time of the main rotor thrust model.关键词
直升机/旋翼升力/建模/八占位法/诱导速度/机身速度Key words
helicopter/main rotor thrust/modeling/eight-site-occupancy method/induced velocity/airframe velocity分类
信息技术与安全科学引用本文复制引用
栗英杰,张忠君,孟广伟,房兆文..基于八占位法的直升机旋翼升力建模研究[J].华中科技大学学报（自然科学版）,2015,(8):98-102,5.基金项目
2013年度空军航空大学博士后科研基金资助项目；国家自然科学基金资助项目（11372353）． （）
