F22图片介绍

2/14/00GenglinTang1“DangerousBeauty”-RaptorF-22•Introduction•AerodynamicDesign•Maneuver/Control•Avionics/Weapons•Lessons•References2/14/00GenglinTang2“DangerousBeauty”-RaptorF-222/14/00GenglinTang3Introduction(Con’t)•WhyATF?[8,12]•UpdateGenerationF-15+F-16+F-117•F-15(alloutandallback)Su-27,Mig-29,andMirage2000•ATF(firstlook,firstshoot,andfirstkill)Mig1.42andEF20002/14/00GenglinTang4IntroductionAirSuperiority[1,13]:Fighterperformance,Radar,long-rangemissiles,short-rangemissiles,andcombatmissionradius.2/14/00GenglinTang5WhyATF(F-22)?[2,8,9,14,15,16,17]Table2GeometricComparisonbetweenF-22andF-15[2,8,9,14,15,16,17]A/CF-22AF-15AAR2.43.01(self-estimated)TaperRatio0.1690.2AirfoilBiconvexNACA64A(LEwithconicalcamber)ThicknessRatio(%)5.92~4.295.9~3Sweep423842’WingPlanformModifiedDiamondTrapezoidalH-TailSpan29’28’33”V-TailCanted28VerticalHigh-liftsystemLE(3~30),TEflapTEflapTable3OverallPerformanceComparisonbetweenF-22andF-15[2,8,9,14,15,16,17]A/CF-22AF-15AT/W1.41.15W/S71.4(self-estimated)66L/D22.5(sub),4.2(sup)(self-estimated)CmaxL1.0(self-estimated)C0,D0.005(Sub),0.036(Sup)(self-estimated)Range(miles)700(supercruise)Glimits97.33Supercruise(Mach)1.58NoTV20NoStealthYesNo2/14/00GenglinTang6WhyF-22?AirdominancefighterYF-22:ManeuverabilityandbettercompromiseYF-23:Supercruiseandstealth[2,8,9,14,15,16,17]Table1BasicSpecificationsA/CF-22AYF-23F-15ALength62’1”67’4.75”63.8’Height16’5”13’10.75”18.5’WingSpan44’6”43’7.25”42.8’Area(gross,sq.ft)840945608TOGW60,00064,00041,500Weight(lbs.)Empty31,67037,00Speed2.02.02.5ServiceCeiling(ft)50,000+65,000+100,000PropulsionF119-PW-100(2)YF119/YF120F100-PW-229(2)Armament8missiles+1gun8missiles+1gunService20051974WarRecord33(Iraq),4(Kosovo)Turnout3481,500DerivativeBB~JManufacturerLockheed-BoeingNorthrop-GrummanMcDonnellDouglas2/14/00GenglinTang7F-22technology[9]Supercruise,unlimitedmaneuverability,andstealth•ExternalAircraftGeometry-Lowobservable-Lowsupersonicdrag-UnrestrictedManeuverability•Propulsion-Lowobservablesupersonicinlet-Lowobservableaugmenter/thrustvectoringnozzle•Avionics-Commonmodules-Adarealtimesoftware-Liquidcoolingforreliability-Lowobservableapertures-Radar-Infrared-Communication/Navigation-Electronicswarfare•Othersubsystemsandequipment-Lowobservableairdatasensors-Lowobservablecanopy2/14/00GenglinTang8ConfigurationFeatures[9]-Blendedwing-bodywithinternalweaponsbaysandsufficientinternalfuelvolumeformeetinglongendurancemission.-Chinnedforebodywithradar-compatiblenose,singlepiececanopy,andgoodpilotvisibility(15downlookovernose).-Modifieddiamondwingwithawingspancompatiblewithexistingaircraftshelters,andconstantchordfullleadingedgeflaps,aileronandflaperons.-Scarfedwingtiptoaccommodateinstallationofvariousantennas.-Allexterioredgeanglesalignedwitheitherthewingleadingortrailingedgeangles.2/14/00GenglinTang9ConfigurationFeatures(Con’t)[9]-Twin,cantedverticaltails;constantchordrudders.-Allmovableclippeddiamondhorizontaltails.-Two-dimensional,convergent-divergentexhaustnozzleswithindependentthroatandexitareaactuationandpitchaxisthrustvectoring.-Freestreamfixedgeometrysupersonicinletswithsweepcowllips,boundarylayerbleedandoverboardbypasssystems,andarelativelylongsubsonicdiffuserhaving100percentline-of-sightRFblockage.-Integratedelectronicflight/propulsioncontrolsystem,totallysoftwarecontrolled.2/14/00GenglinTang10FlowPatterns/AerodynamicDesign[6]increase:strongervortexandbreakdownmovesupstream2/14/00GenglinTang11FlowPatterns/Aerodynamics(Con’t)[6]increase:strongervortex,breakdownmovesupstream,andasymmetrictrajectoryofvortex2/14/00GenglinTang12ControlSurfaces/Maneuver[3,7,9,10,12]•PitchControl:H-tail+TV•Rollcontrol:ailerons+flaperons+differentialH-tails•Yawcontrol:V-tailswithrudders+differentialH-tails25,ruddereffectivenessdecreasessomehigh,aileronandflaperoneffectivenessdecreases•FullspanLEflaps:optimizethewingcamberforbettercruiseandmaneuveringperformanceandimprovehandlingqualities•AthighH-tailsplayakeyrolebecauseTVfreesitstraditionalfunctions.2/14/00GenglinTang13TVEnvelope/Maneuver[3,10]12122020ONV200KCASBlended200V225KCASfunctionOFFV225KCASLinearSuperimpositionFunctionofMachnumberandAltitude2/14/00GenglinTang14TVGains/Maneuver[3,7,9,10,12]-Reduceweight400lbs.–(30~50lbs.)-Controlcapabilities–Enhancepitchcontrol–FreeH-tailsathigh–Decreasefieldlength–Optimizesubsonicandsupersonicmaneuveringperformance–Post-stallmaneuveringandnosepointingability2/14/00GenglinTang15TVGains/Maneuver(Con’t)[12]2/14/00GenglinTang16CobraManeuver[1,6]2/14/00GenglinTang17Supermaneuverability[10]2/14/00GenglinTang18Avionics[1]•IntegratedavionicsreplacesfederatedavionicswithCIP(CommonIntegratedProcessor,acentral“brain”withtwoequivalentCraysupercomputers),INEWS(IntegratedElectronicsWarfareSystem),andCNI(IntegratedCommunication,Navigation,andIdentificationAvionics).•Satisfythedesireofpilot’sKISSrule.2/14/00GenglinTang19Radar[1]2/14/00GenglinTang20Weapons[1]-Short-rangemissiles-Medium-rangemissiles-Cannon2/14/00GenglinTang21Lessons•Performance:highspeed-maneuverability•Handling:“Italwaysdid