通用电气CF6-80C2飞机发动机

INTERNATIONAL John Marsden AMRAeS Cincinnati,Ohio '87 30 FLIGHT INTERNATIONAL, 23 May 1987 1 Aerodynamic spinner cone 2 Fan blade support disc 3 93in-diameter fan: 38 titanium far blades with machined squealer tips 4 Blade retainer and key on forward face (silicone rubber sealed) 5 Mid-span shroud 6 38 bolts attach fan to booster spool (retains fan blades on rear face) 7 Fan case to nacelle inlet duct attachment flange 8 Fan blade containment cage, 65 layers of Kevlar-epoxy wrap 9 Aluminium honeycomb filled Kevlar composite'nest area" 10 Nomex honeycomb, phenolic microballoon filled abradable tip shroud 11 Aft fan case, Kevlar felt core stiffened with aluminium 12 Acousticallylinedairintake(5.28:1 bypass ratio) 13 Detachable inner fairing 14 Acoustically treated, Nomex honeycomb core fan air duel 15 Outlet guide vanes (carbonfibre bonded to nylon viton "boots") 16 Five-stage low-pressure (LP) booster spool 17 Stator blades. Stages 2 to 5 are orthogonal to airflow 18 Horizontally split aluminium booster stator case 19 Cast titanium fan hub 20 12welded-steel radial support struts 21 Forward-fan shaft 22 Fan thrust bearing and oil slingerring 23 N, speed sensor cage 24 LP shaft forward roller bearing 25 "A" sump pressure air in and out 26 Variable bleed-doors f 12) 27 Variable bleed-valve (VBV)fuel-actuated actuators and push-pull rods (both sides) 28 VBV unison ring and bellcranks 29 14-stageHPcompressor discs 30 Forward end roller bearing support 31 Rear-end roherand ball bearings 32 Stage 1, 36 blades, with mid-span shrouds 33 HP compressor stator case (centrifugally cast titanium) split horizontally for "on-wing maintenance" 34 Variable inlet guide vanes(IGVs) 35 Variable stator vanes (VSVS) — five stages 36 Fixed stator blades, plasma sprayed then graphite coated 37 VSV fuel-actuated actuators and push-pull rods (one each side) 38 Actuator beam and linkage 39 Two-piece actuator rings, guided on Teflon pads against case 40 Compressor discharge pressure (CDP) and vent seals 41 Mid-fan shaft 42 Stages 3-14 rotor blades — tips run in machined trenches to provide clearance lor blades during excursion transients 43 7th-slage primary and 11th-stage secondary compressor bleed air to high- pressure turbine disc cooling 44 8th-stage customer bleed air 45 Compressorrearframe"B-C"sump 46 Pressure balance seal and diffuser 47 HPrecoupairtransferpipe 48 Bearing lubrication oil jets 49 Outlet guide vanes (OGVs) and swirl straighteners (28) 50 CDP compressor discharge outlet and bleed 51 Combustor inner and outer liners with insulation blankets between sectors 52 Fuel swirlers (30) 53 Fuel metering manifold and nozzles (30) 54 Shrouded couplings and drain manifold 55 HP turbine nozzle guide vanes, air cooled with thermal barrier coating 56 Stage one and two HP turbine rotor 57 Thermal shield 58 Impeller vanes spacer and cover 59 Stage two turbine nozzfe assembly 60 HP turbine to compressor rear shaft coupling nut 61 Internal pressure tube 62 Pressure balance seal 63 Five-stage LP turbine rotor assembly 64 LP turbine stators 65 No 6 roller bearing housing and pressure seals "D" sump 66 LP turbine coupling splined to LP N, rotor 67 Internal venting tube 68 Active clearance control (ACC) air to LP turbine 69 Cooling air to rear of HP turbine and instrumentation 70 Turbine shrouds minimise air leakage over blade tips 71 Turbine rear frame casting 72 Exhaust airflow straightener struts 73 Rear engine mounting lugs (each side) 74 Centrebody exhaust cone mounting ring 75 Hub heating air scoop 76 "D" sump vent discharge 77 Pressure oil to "D" sump bearing 78 Scavenge oil 79 Fan air discharge for ACC via air valve 80 ACC to HP turbine 81 ACC to LP turbine 82 CDP and customer bleed 83 LP and HP recoup air outlet 84 LP recoup 85 "B and C" sump vent air to "A" sump 86 Compressor inlet temperature sensor 87 Forward main engine mount assembly 88 Yoke and thrust links 89 Gearbox drive bevel gears and radial driveshaft 90 Transfer gearbox 91 Horizontal driveshaft and housing 92 Titanium heatshield 93 Accessory gearbox 94 Mounting lugs and isolators 95 Mounting Irames (both sides) and side links 96 Transverse links 97 Cooling air jet pipe 98 Electric starter motor (provision for air starter) 99 Integrated drive generalor mounting pad 100 Drain module 101 Drain mast valves and overboard dump 102 Fire seal 103 Ignition exciter box 104 Cooling air outlet 105 Ignition leads to twin igniter plugs 106 Oil tank with silicone rubber insulation jacket 107 Scavenge oil filter 108 Fan air duct to air-oil heat exchanger via control valve 109 Heat exchanger FLIGHT INTERNATIONAL, 23 May 1987 Reed Business Publishing 1987 31