变转速旋翼直升机的续航性能与变速策略  

Endurance Performance and Rotational Speed Change of Variable Speed Rotor Helicopter

作　　者：吴裕平[1] 董凌华[2] 解望 WU Yuping;DONG Linghua;XJE Wang(Chinese Helicopter Research and Development Institute,Jingdezhen,333001,China;State Key Laboratory of Helicopter Rotorcratt Aeromechanics,Nanjing University of Aeronautics&Astronautics,Nanjing,210016,China)

机构地区：[1]中国直升机设计研究所,景德镇333001 [2]南京航空航天大学旋翼动力学国家级重点实验室,南京210016

出　　处：《南京航空航天大学学报》2018年第2期193-199,共7页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：根据飞行状态合理调整旋翼转速有利于降低需用功率和油耗,能够给直升机飞行性能带来好处。本文通过航程和航时的建模与分析,评估变转速旋翼对续航性能的影响。在此基础上,进行无级变速和有级变速策略研究,提出一级、二级变速方法。研究结果表明,优化转速对续航性能的提升很明显,旋翼有限级变速(一级、二级)和额定转速相比,可以显著减小其型阻功率,综合考虑,一级变速较适合于工程应用。Adjusting the rotor rotation speed reasonably along with flight states can reduce demand power and fuel consumption,thus benefit flight performance.We evaluated the effect of the variable speed ro-tor on endurance performance,and analyzed stepless speed change and step speed change.The level 1 and level 2 variable speed method were put forward.The research results indicated that optimized rota-tion speed can upgrade endurance performance obviously.Compared with the rated speed,it can reduce profile power.The level 1 variable speed method is more fit for engineering application.

关 键 词：直升机 旋翼 转速 续航性能 有级变速 需用功率 

分 类 号：TN958[电子电信—信号与信息处理]