FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1957
1957 - 1586.PDF
674 FLIGHT THE Viscount has become the symbol of the British aircraftindustry's aspirations to challenge the American industry'sdomination of the world's transport aircraft market. Look-ing back on the Viscount's remarkable career, in the course of which the aircraft has been ordered by no less than 47 operatorsin 31 countries, it is possible to detect the main ingredients of success. First, the concept of a medium-sized propeller-turbineairliner was a relatively short technical step, rather than a bold leap ahead. Second, the turbine engine chosen was—in accord-ance with Rolls-Royce principles—a good piece of rugged en- gineering, built to known and understood precepts rather thanto promising but (at that time, i.e. just after the war) uncharted technical principles. Third, the co-operation of B.E.A. (thoughit wavered at critical moments in the early development stages) ensured that the experience of a short-haul operator was builtinto the aircraft. Fourth, the makers were prepared to make far-reaching changes to die basic design in order to give thecustomer what he wanted. It has often been said that the changes made to "Americanize" the Viscount for T.C.A., though involv-ing nearly as many design manhours as did the design of the TWO-MAN FLIGHT-CREW WITH OCCASIONAL THIRD SEAT AIRLINERS OF THE WORLD VISCOUNT 8IO Vickers-Armstrongs (Aircraft), Ltd. Weybridge, Surrey. .t Drawn at Weybridge, 1956, revised October, 1957. "FOUR-ENGINE" FUEL SYSTEM. 20 FLEXIBLE CELLS FORMING FOUR TANKS TOTAL CAPACITY 1.916 Imp gal TOILETS-PORT AND STARBOARD SEATS FOR 52 PASSENGERS 27 ' PASSENGERS •CARRY-ON" LUGGAGE BAY WEATHER RADAR BENEATH HEATED RADOME 46in ADDED TO FUSELAGE UNDERFLOOR (PRESSURIZED) FREIGHT HOLD (TWO DOORS ST'B'D) ROLLS-ROYCE DART 520 (RDo.7) TURBOPROP OF 2.100 h.p. JOHN PALMER. RECTANGULAR ENTRANCE DOOR WtTH FOLDING STAIRWAY original prototype, proved to be the turning point of the Vis-count's sales career. There are four basic types of production Viscount, as listedbelow. THE VISCOUNT FAMILY Salient Data for the Main Types in Production 700D 800 810 840 Length, ft 81.83 85 85.66 85.66 Span, ft 93.71 94 94 94 Wing area, sq ft 963 963 963 963 Empty weight, Ib 37,032 39,900 40,783 41373 Max. zero fuel weight, Ib 49,500 54,000 54,500 55,000 Max. Landing weight, Ib 57,500 58,500 60,000 60 000 Max. take-off weight, Ib 63,000 63,000 67,500 69 000 Max. payload, Ib 10,840 12,890 12,510 12 420 Dart engine type 510 510 525 541 Typical cruising speed (20,000ft), m.p.h. 325 320 360 400 Total fuel, Imp. gal 1,988 1.910 1,900 1,900 No. of passengers (standard) 44 52 52 52 Max. payioad range*, st.m 1,110 500 960 1100 Typical take-off field length, ft 5,150 5,150 5,350 5^300 •Reserves include: 45 min holding at 5,000ft and a 230 st. m. diversion. Note: Performance figures are for typical standard conditions. The description which follows relates to the Viscount 810/840. This version makes use of the higher powered Dart R.Da.7 Series of 1,990 ch.p., giving considerably higher available cruisingpower than previous Viscounts. The cruising speed of the 810 is some 40 m.p.h. more than previous Viscounts; and the designa-tion 810/840 indicates that the structural changes made to accom- modate the increased power of the R.Da.7 are, in fact, sufficient to
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
