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Aviation History
1959
1959 - 2207.PDF
18 FLIGHT 11 SEPTEMBER 1959 ••••-1*;. Only the VANGUARD has this proved flexibility AIRLINE OPERATORS are invited to look carefully at this diagram and graph, and then compare the Vanguard's flexibility with their own experience of short haul operation on high-density routes. It is easy to see that this remarkable aircraft can be routed at altitudes of from 5,000 ft to 25,000 ft and above, with practically no penalties in opera- ting costs or speed. The difference in direct cost between a 500-mile sector flown at 10,000 ft and one flown at an optimum of 20,000 ft is only $44 per trip. A cruising speed of over 400 m.p.h. is available between the height bands of 5,000 ft and 30,000 ft., so that schedules can be maintained irrespective of route- ing instructions. ALTITUDE FEET ISA. «0» LOAD FACTOR 30,000 20,000 10,000 0 s / /f SPEED CAN BE MAINTAINED WHATEVER THE ALTITUDE ROUTEING INSTRUCTIONS 340 380 420 460 CRUISE AIRSPEED - M.P.H. -500 MILES- TRIP COST 832$ 827$ 840$ 871$ 919$ ALTITUDE FEET 25,000 20,000 15.000 10,000 5,000 LOW LEVEL ROUTEING IMPOSES NO FINANCIAL STRAIN WITH THE VANGUARD Of all the airliners only the Vanguard has all these features 425 m.p.h. cruising • Freight capacity 10 tons at normal densities • Full routeing and A.T.C. flexibility • Can use normal existing airfields • Quick turn-round • No airfield noise problems • Ten years' unique Vickers/Rolls-Royce turbo-prop experience ... And it is 'Viscount' quiet. VICKERS FOUR ROLLS-ROYCE TYNE TURBO-PROP ENGINES The airliner with the biggest profit potential ever offered to the operator';. VICKERS-ARMSTRONGS (AIRCRAFT) LIMITED WEYBRIDCE SURREY
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