前卫VANGUARD

130 FLIGHT Vanguard air unit is mounted forward of the front freight hold. (For extreme temperatures, electric heaters or Freon refrigerating systems can be incorporated). Air is introduced into the cabin through the ceiling, and is extracted through louvres in the wall skirting. A radiant wall heating system is also incorporated. Normal cabin air rate-of-change is 20 times per hour. Ice Protection Wing leading edges are de-iced thermally by ram air which is passed through heat exchangers and heated by exhaust gases tapped from the engine tailpipes. Leading edges of the fin and tailplane are protected by Napier Spraymat electrically heated elements. Triplex gold film (or Nesa glass) protects the windscreens electrically. Propellers, nose cowlings and spinners are also protected electrically. Hydraulics Lockheed hydraulic pumps are driven from the Tyne accessory gearboxes. Hydraulic power at 3,000 lb/sq in operates the undercarriage, flaps, brakes, steering, windscreen wiper, parking and built-in passenger steps. Electrics Power is supplied by six variable-frequency A.C. alternators, four of which are coupled to transformer/rectifier units, each of these having an output of 500 amp 28 V DC for the VICKERS-ARMSTRONGS V.950 VANGUARD Four Rolls-Royce Tyne I turboprop* of 5,030 s.h.p. (5,515 e.h.p.) driving de Havillond 14ft t in diameter four-bladed propellers Dimension! : Span, 118ft; length, 112ft 10.4in; overall height, 34ft 11 in; track, 30ft 3in; wing area, 1,529 sq ft(gross), 1,347 sq ft (net); root chord, 205in; flaps, 161 sq ft per side; ailerons, 61 sq ft each, aft of hinge; tailplane, 236 sq f t ; elevators, 146 sq f t ; fin, 150 sq f t ; rudder (aft of hinge line), 87 sq f t ; max. fuselage cross section, 11ft 6in wide and 13ft 7.1 Sin deep. Weight i : Max. take-off. 141,0001b; max. landing, 121,0001b; max. zero fuel weight, 112,5001b; max. payload, 29,0001b: basic weight, 83,5001b. Performance: Cruising speed, 425 m.p.h. at 20,000ft at 13300 r.p.m.; take-off field length (I.S.A., sea level at max. take-off weight, 6,000ft); payload-range performance (see curve); landing distance from 50ft, max. landing weight, 3.300ft. main electrical system. In addition, these alternators supply power for their respective nose cowl, propeller and spinner de-icing systems. Voltage control is by means of carbon pile regulators, and storage batteries are carried under the floor. Two 28 V DC in- verters provide 400 c/s three-phase 200 V AC supplies for instru- ments, autopilot and electronics. Radio and Radar Provision is made for the following: weather radar, A.D.F., V.H.F., I.L.S./V.O.R., Decca, H.F., Tacan, radio altimeter and transponders. PAYLOAD ACCOMMODATION The Vanguard's cabin can accommodate six-abreast seating with a capacity of up to 139 passengers in maximum economy-class layout. Normal first-class seating is 97. Maximum internal diameter is 10ft 7in; headroom is 7ft 2.5in. Fixed toilet accommodation is provided in the plane of the propellers; otherwise, galley amenities, wardrobes and bulk- FORWARD PANTRY RADIO STOWAGE TOILETS PORT AND STB"D FORWARD UNDERFLOOR FREIGHT HOLD FORWARD ENTRANCE DOOR WITH BUILT-IN FOLDING STAIRS FOUR ROLLS-ROYCE TYNE PROPELLER-TURBINE ENGINES FLIGHT DECK. TWO PILOTS FLIGHT ENGINEER FRONT PRESSURE BULKHEAD — J.-A. M-ARSDCN — DE HAVILLAND FOUR-BLADEt) Mft t in REVERSIBLE-PITCH PROPELLERS 25 July 1958 131 1 Fibreglass radome over cloud- collision-warning radar 2 Electrically heated and demisted windscreen panels 3 Air supply duct to flight deck 4 Adjustable control column 5 Engine, airscrew, flap and trimming control pedestal 6 Air conditioning heat exchangers. Cold-air unit and temperature control system (each side of nose- wheel bay) 7 Roof switch panel 8 Folding stair jack 9 Individual cold-air supply duct (port and starboard) 10 Cabin air supply ducts in roof 11 Folding seats for stewards in for- ward and rear vestibules 12 Emergency exits (starboard side) 13 Fin and tailplane attachment frame 14 Vapour cycle condenser 15 Suppressed aerials (V.H.F. and I.LS./V.O.R.) 16 Electrical de-icing (Napier Spray- mats) 17 Balance, servo and trim tabs 18 Rear pressure bulkhead 19 Viscount-type windows (26inx19in) 20 Non-return valve for cabin pressure air 21 Charge-air to air-conditioning plant 22 Air silencer 23 Air filter, blower aod silencer 24 Firewall 25 Main engine air intakes 26 Oil cooler 27 Integral engine oil tank 28 Access holes to integral tanks 29 Flattened tailpipe 30 Wing de-icing crossover pipe 31 Main undercarriage machined rib 32 Undercarriage retraction jack 33 Bolted access panel 34 Gravity fttlers 35 Double-track flap guide ribs 36 Single-track flap guide ribs 37 Flap torque tube 38 Integrally stiffened wing torque box 39 Petal-type cowlings 40 Accessory gearbox 41 Air intake to de-icing heat ex- changer 42 Heat exchanger (outboard nacelles). 43 Ventral exhaust gas outlet 44 De-icing hot-air duct 45 Intercommunicating holes in centre web 46 Spring tab 47 Aileron leading-edge beak 48 Detachable wing-tip 49 Landing lamp 50 De-icing hot-air outlet REAR PANTRY \2 REAR EMERGENCY EXIT REAR PASSENGER DOOR TO CENTRAL AND AFT SALOON WITH BUILT-IN FOLDING STAIRS REAR UNDERFLOOR FREIGHT HOLD FOWLER-TYPE FLAPS TURBINE EXHAUST FOUR-TANK FUEL SYSTEM T W O INTEGRAL TANKS PER WING TOTAL FUEL CAPACITY 5.100 hup gal heads are removable. Total length of usable payload space is 90ft. The very large freight holds under the floor are 750 cu ft hi capacity (forward) and 610 cu ft (aft). The forward hold is 26ft Sin long; the rear hold 22ft Sin long. Offered as a freighter with strengthened floors, the Vanguard possesses an above-floor total volumetric freight space of 5,690 cu ft. Total volumetric capacity for freight, above and below the floor, is thus 7,050 cu ft. Headroom in the underflow: freight holds is sufficient to allow loading personnel to work inside. The floor of the standard passenger cabin of the Vanguard is 893 sq ft in area. Freight floors are stressed to 150 lb/sq ft. 1958-1-%20-%200128.pdf 1958-1-%20-%200129.pdf