小型共轴对转螺旋桨气动设计与仿真研究

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中图分类号:TP391.9 文献标志码:B 文章编号:1671-5276(2025)05-0137-04

Astronautics,Nanjing 210o16,China) Abstract:Smallcoaxial propeler structure UAV,smallin longitudinal size,is convenient for maneuvering inasmall space,and its take-off and landing are not restricted bythe site.Basedon theoptimal circulation distribution propeller designmethod,asmallcoaxialcounter一rotating propeller ismodelledand simulated,itsrotationspeedandpropeller pitcharechangedanditsaerodynamiclaws areexplored.Theresultsshowthattheeficiencyoftheupperandlowerpropellers inthedoublepropellerstateishigherthanthatofthesinglepropelerinmostcases,withoveralleficiencyreachingamaximum value of 0.74 at 6000r/min ,and the maximum efficiency being O.76 at a pitch of 0.5R and a rotation speed of 6000r/min upon propeller pitch change.

Keywords;smallUAV;coaxialcounter一rotating propeler;propellrspacing;aerodynamic interference;CFDsimulation

0 引言

在过去十年间,小型/微型无人机是航空工程领域研究最多的项目之一,无论在军用或者民用方面都有着非常大的潜力,如识别、灾害控制、侦察、精准农业以及紧急援助等。(剩余4499字)

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