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296199712JournalofNanjingUniversityofAeronautics&AstronauticsVol.29No.6Dec.1997X梁海涛 郭才根 王 平(,210016),,,,,,,,,,,:;;;:V211.52CTCxp7kkpVJW-Lv-1,2v-1,1#-r#-av#~,#~=#-r/#-av8RRV,,,,X:1997-06-06;:1997-07-14,,197161(),1,Rs(RsR),,(2),(R-s=Rs/R,h-=h/R)1,,,,,V-y1=av-1,2V-y2=bv-1,2(1)a,bh-[1]V-=V-y+v-=12(V-y+k#-r/P+V-2y)#-av#-r,2R-s-h-2v-av=CT/V+V-2y-V-y,2v-1,2=CT2/V+(bv-1,1)2-bv-1,1(2)2v-1,1=CT1/V+(av-1,2)2-av-1,2(3)v~1,2=v-1,2/(12CT2/V)(4)v~1,1=v-1,1/(12CT1/V)(5)(2,4),v-1,2,2v~1,2=4+(bv~1,1)2C-T-bv~1,1C-T(6),C-T=CT1/CT22v~1,1=4+(av~1,2)2/C-T-av~1,2/C-T(7),,mR1=mR2,,,:mV1=mV2R-s,,R-smV1,mV1=C3/2T12V3/2R-s0r-#~(V~y1+4#~+V~2y1)dr-+21R-sr-#~3/2dr-(8)6396:,#~=1,mV1=C3/2T12V3/212R-2s(V~y1+4+V~2y1)+(1-R-s2),mV2=C3/2T24V3/2(V~y2+4+V~2y2)(9)V~y1=av~1,2/C-TV~y2=bv~1,1C-T#~r=#-r/#-avmV1=mV2,bv~1,1C-3/2T+4+(bv~1,1)2C-T=C-3/2T[R-2s(av~1,2C-T+4+(av~1,2)2/C-T)+2(1-R-2s)](10)(6,7)v~21,2+bv~1,2v~1,1C-T=1(11)v~21,1+av~1,2v~1,1/C-T=1(12)(10-12),h-C-T,v~1,1,v~1,2(1),3-5C-T,v~1,1,v~1,2h-1h-,R-s,a,b,v~1,1,v~1,2,C-T,Kh-00.10.20.30.40.50.60.70.80.91.0R-s1.0000.9220.8760.8440.8200.8010.7850.7730.7630.7550.748a1.0001.1761.3031.4041.4871.5591.6211.6741.7181.7541.787b1.0000.8390.7170.6230.5470.4860.4340.3910.3540.3230.296v~1,10.7050.6900.6750.6570.6420.6330.6120.6060.6060.6000.579v~1,20.7080.7590.8010.8310.8550.8730.8910.9030.9120.9210.930C-T0.9990.9240.8700.8310.8010.7800.7590.7470.7350.7260.717K0.5480.5410.5370.5330.5310.5290.5280.5260.5260.5250.5243464029,CTco=CT1+CT2=CT2(1+C-T)mRcomRco=mpco+mvco=2mp+2mv2=2mp+KC3/2Tco(13)5Kh-K=bv~1,1C-T+4+(bv~1,1)2C-T2[(1+C-T)V]3/2Kh-5(V0.94)5,h-=0,,,mRco=2mR=2mp+0.55C3/2Tcoh-,22.1[2]mp=mpn+$mp,mpn=14(1+$D+3V-2)RkpCxp7$D=0.75(1+0.5L2)a210$mp,$mp=510-3V-2R,,,;,,,,,,,mpco=mpnco+$mpco=2(mpn+$mp)(14)2.2,V,,mi1=kP22P0dW1r-0(-v-(1)2)W-#-1(r,W)dr-(15):v-(1)2=v-(1)y+v-(2)yv-(1)yv-(2)y,v-(2)y,vx,6416:,:L(1)=(VcosAs-ûv(2)xcpû)/8R,L(2)=(VcosAs+ûv(1)xcpû)/8R,CT1=CT2=CT,,mico=2mi1=2õC2T1õJ14V2V-=2õ(CTco/2)2õJ14V2V-=12õCTco2J14V2V-=CTco24V2V-õJco(16)Jco=J0(1+Vco)/2,Vco=v-co(h-)/v-av(0)h-,,1.15CTV-0.25(,),mico=miJcoh-=0.2,Vco=0.66,Jco=0.8383%2.3,ppaco=C-xcoV-3,C-xco=(2CxS)co/PR2,(2CxS)co=X(2CxS)co6X,X1.101.15[2]3,,63.1,,(2),TU,TD2,2h-TU/NTD/N(kW)TU/NTD/N(kW)h-=0.185172.26151.523.6173.85149.553.47h-=0.29171.15122.322.94162.88131.123.09h-=0.34175.42127.23.26169.64132.993.2h-=0.39169.17128.283.23168.07129.363.13h-=0.45174.05119.863.47173.26130.443.213.23[3],10%642293(m)800750(m)13001200(m)30003300(km/h)170178(km/h)150155(km/h)90110100(km)400425(h)3.73.69,,,1.:[].:,19972VildgrubeLS.Calculationsofintegralaerodynamicscharacteristicsandflight-mechanicsdata.FSTC-HT-659-85,19773,..:,19944VildgrubeLS,etal.Theoryoftheliftingairscrew.NASATTF-823,19765..:.,1995.194-203AnalysisonFlightPerformanceforCoaxialHelicopterLiangHaitaoGuoCaigenWangPing(ResearchInstituteofHelicopterTechnology,NUAANanjing,210016)AbstractTheaerodynamiccharacteristicsofcoaxialrotorsinhoverandforwardflightsareanalyzedfromthepointofpreliminarydesign;thecomputationmethodisfoundandtheperformancecalculationprogramisavailableforthepreliminarydesign.Especially,forthehoveringstate,momentumtheoryisappliedandafterasetofreasonablesimplifi-cationandanalysis,equationswhichcanbeusedtocalculatetheperformanceofcoaxial-helicopterwithdifferentdiscdisplaceareobtained.Thecomparisonofthecalculationre-sultspresentedinthepaperwiththetestresultsonarotorteststandindicatesthatthemethodpresentedisquiteeffectiveforpreliminarydesignforcoaxialhelicopter.Keywords:helicopters;coaxialhelicopter;flightperformancecalculation;preliminaryde-sign6436: