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Aviation History
1963
1963 - 0708.PDF
681-682 FLIGHT International, 9 May 1963 1 Intake detuning acoustic panels 2 New design of fan inlet case 3 Mid-span shrouds 4 Solid titanium fan blades 5 Dove-tailed blade roots 6 Pinned blade roots 7 Titanium l-p compressor blades (on inner shaft) 8 Fan duct 9 Bearing housing support 10 L-p shaft bearings 11 H-p shaft bearing 12 Steel h-p compressor blading (on outer shaft) 13 Compressor-disc tie-bolts 14 Bearings seal 15 Inter-stage seals It Main centre bearings 17 Heat shield 18 H-p shaft I? H-p shaft rear bearing (roller) 20 L-p shaft 21 L-p shaft rear bearing 22 Single-stage h-p turbine 23 Three-stage l-p turbine 24 Disc tie-bolts 25 Split combustion chambers 26 Solid nozzle guide vanes 27 Casing split axially for access 28 Combustion casing slides aft for access 29 Forward mounting lugs (both sides) 30 Aft mounting ring 31 Combustion-chamber rear support 32 Combustion chambers discharge into common annular nozzle 33 Accessories-gearbox drive gear 34 Tangential bolts supporting turbine 35 Cowling prop 3* Cowling hinge-rail attachment 37 Latch for (36) 38 Cowling support ring 39 Vibration-isolating engine mounts 40 Seal 41 Forged mounting beams Air Bleeds 42 Intake anti-icing manifold 43 Anti-ice mixing air inlet 44 Anti-ice air injector 45 Anti-ice air bleed duct (13th stage) 46 CSD oil-cooler intake, anti-ice air 47 CSD oil-cooler air ejector 48 Intake anti-ice air valve 49 Anti-icing air exhaust 50 IGV anti-ice air (8th stage) 51 Valve to (50) 52 Fuel-heater air exhaust (adjacent to CSD oil-cooler exhaust) 53 6th-stage bleed manifold 54 8th-stage bleed manifold 55 I3th-stage bleed manifold 56 6th stage 57 8th stage 58 13th stage 59 To fuel heater and bleed control valve 60 Hydraulic-oil cooler ejector air 61 6th-stage low-temperature air (anti- ice) 62 8th-stage air to cabin-air system 63 13th-stage hot air (for temperature modulation of 6th- and 8th-stage air) 64 Fan bleed air to pre-cooler 65 Pre-cooler to cabin-air system 66 Pressure regulator and shut-off valve 67 Temperature modulating valve 68 Bleed shut-off valve 69 To cabin-air system 70 Combustion air 71 Fan air Reverser 72 Reverser actuating air 73 Pneumatic actuator 74 Deflector-door crosshead 75 Clamshell-door crosshead 76 Crosshead slide 77 Deflector-door linkage 78 Buffer stop 79 Deflector doors 80 Clamshell doors (closed) 81 Clamshell-door bearing support 82 Clamshell-door operating lever Fuel System 83 Fuel pump 84 Fuel control unit 85 Fuel heater 86 Flowmeter transmitter 87 Fuel delivery to (88) 88 Fuel pressure and dump valve 89 Delivery to (90) 90 Fuel manifold 91 Burner 92 Overboard dump line 93 Fuel supply line 94 Fuel drains 95 Power and reverser controls 96 Power control cross-shaft 97 Pressure ratio Pt I and 2 (total pressure) f59 3) sez 591 ,f-S 2»J 53 BOEING 727 Powerplant rSt 50 ,13 R10/S 08 izr IZi 1Z6 83 m 39 On these two pages another "Flight International" artist portrays the salient features of die Pratt & Whitney JT8D-I turbofan, which was designed to match Boeing's requirements for the propulsion of the 727. He has drawn the No I (left) engine, and has also included the complete mounting strut, fixed nose cowl and reverser (which is shown in the open position). The engine is shown sectioned along the left horizontal centreline to reveal details of its interior design, which is further commented upon on page 688
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