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Aviation History
1957
1957 - 1590.PDF
678 FLIGHT 1 baggage each. Five of these fit into the forward baggage holdand are then slid into place by a mechanical loading device located within the fuselage. Rectangular section windows (9inby 12|in) are rather small, and are spaced with one in each 20-in frame. There are additional emergency exits above the wingbetween the frames flanking the 15th and 19th windows from the front. Wing Each complete wing comprises three sections: a centresection of the same width as the fuselage, to which are bolted port and starboard main planes swept back at 35 deg. There are twowidely spaced spars with an extruded T-form boom above and an angle below, with heavy sheet webs, stiffened by vertical stif-feners at and between each nose rib location. The rear spar is cranked just outboard of the outer nacelle, where it is sweptback at an increased angle, but still converges with the front spar. From immediately outboard of the low-speed ailerons, the metal AIRLINERS OF THE WORLD OEING 7O7 . . . 1 Cloud/collision radar scanner 2 Glide-slope aerial 3 Doppler aerial (true ground speed) 4 Nesa-glass windscreens 5 Direct-vision panel (slid to rear) 6 "Vision-in-a-turn" windows 7 Nosewheel doors shut with gear down 8 "Double bubble" intersection line 9 A.T.C. transponder aerial 10 Nosewheel box 11 Seat tracks (1 in increment) 60, TOIUiTSK FLIGHT DECK: CAPTAIN, FIRST OFFICER ItlGHT ENGINEER. NAVIGATOR INNER INTEGRAL FUEL TANK 1,8»4!mpgol EACH SIDE OUTWARD-OPENING PLUG-TTPE DOORS tip is detachable about a line perpendicular witn the rear spar.Because the spars are so widely separated across the chord, there are many closely spaced ribs, the majority of which are unper-forated heavy gauge assemblies at 90 deg to the rear spar with multiple riveted-angle vertical stiffeners. Similar ribs betweenthe inboard nacelle and the wing joint are set at varying angles to the rear spar, so that at the root they become parallel with theaircraft's centre line. Several of the inner ribs have large rectangular cut-outs spanned by vertical stiffening angles. The underside of the lead- ing edge hinges for access to the tanks from the root to the break joint. Integral tanks of considerable volume are formed by the topand bottom skins and the wing spars. Fuel is allowed to circu- late through the spaces between the ribs and skin left by thedepth of the stringers. Inspection doors of conventional type retained by screws and anchor-nut rings are set-in flush with thebottom skin. Tail The fin is of two-spar construction and a false sparcarries the rudder hinges. Forward of the second spar the ribs are set at 90 deg, while those aft are normal with the false sparand are of heavier construction. Like the fin, the variable-incidence tailplane has two mainspars and multiple-plate ribs with flanged lightening holes, to- gether with heavy ribs carrying the elevator hinges. Each halftailplane is bolted up to a centre-section box free to tilt in a rectangular cut-out in the fuselage. The centre box is bolted to apair of forged trusses hinged along a transverse axis behind the rear spar. All tail unit leading edges are detachable. Pods The nacelle struts are slung from strong ribs, positioneddiagonally to those between the wing spars, but parallel with the line of flight. There is hence a cruciform joint formed with theinter-spar ribs carrying the outer flap tracks. A large forged anchor, providing root fittings for the two strut spars, is bolted tothe front spar. Below this forging extends a strong frame, tri- angulated by a compression tube bolted to the underside of thefore and aft rib. Two substantial vertical chordwise members carry the powerplant. On the Pratt and Whitney JT3C there aremounting pick-ups on top of the compressor inter-spool section, which are attached to the front strut frame via a forged yoke andbraced by a forged stay on each side. Forged attachments also pick up the top of the turbine support casing. "Structuralfuses" are incorporated in the pylon attachment to prevent dam- age to the wing structure in the event of a belly landing. Undercarriage The main legs are hinged to massive trunnions 62—J£ PRATT AND WHITNEY JT3C-. TURBOJET. 13.0001b THRUST OUTER INTEGRAL FUEL TANK 1.946 Imp go EACH SIDE 12 V.H.F. aerial13 Radio altimeter aerial 14 D.M.E. or TACAN aerial 15 Freight door (sliding plug-type) 16 Windows 9in by 12 in (two per seat row)17 Table 18 Emergency exits 19 Floor members on wing top skin 20 Keel member (integral tank for engine water) 21 Pressure bulkheads 22 Intake to air-conditioning heat exchangers 23 Cabin-air distribution ducts 24 Air passing up between windows 25 Air delivery ducts under hat-racks 26 Air extraction at floor level 27 "Passenger service units" 28 "Hot-wall" panelling 19 Fin/fuselage joints 30 Pivot for variable-incidence tail- plane 31 Tailplane screW'jactc 32 Tailplane centre-section joints 33 Control-surface balance panels34 V.O.R. aerial 35 Loran aerial 36 H.F. aerial 37 Control tabs OUTER (RESERVE) FUI 361 Imp 30I EACH SIDi
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