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Aviation History
1926
1926 - 0430.PDF
JULY? 1, 1926 THE ARMSTRONG-WHITWORTH "ARGOSY The Latest Three-Engined Commercial Aeroplane THE multi-engined aeroplane is undoubtedly gaining increasing favour as regards commercial work, and, what is more important, its various advantages are being substantiated in actual practice more and more as development progresses. In theory these advantages have always been unquestionable, but there have been, in the past, certain difficulties that have arisen when it came to actual practice—primarily, the problem of perfect balance and control under all conditions, especially when one or other of the engines is cut out. on Saturday. This huge air liner, which has a span of 90 ft. 7J ins. and has accommodation for 20 passengers, is fitted with three Siddeley " Jaguar" engines, developing a total of nearly 1,200 h.p. One of its engines is mounted in the nose of the fuselage, while the remaining two engines are mounted midway between the main planes, one on each side of the fuselage. All three engines drive tractor airscrews. The wing engines, which project slightly beyond the leading edges of the planes, are THE ARMSTRONG-WHITWORTH ARGOSY" : Three-quarter front view of the latest 20-passengercommercial aeroplane. These difficulties, however, are today fast disappearing, and we think it can be said that the multi-engined machine is now as practical a proposition as is the single-engined type. This is apparent when it is remembered that the multi-engined machine is now adopted as the standard type for their com- mercial air services by Imperial Airways, Ltd. Last week we were fortunate to be able to witness the trial flights of one of the latest designs in this class of commercial aircraft, i.e., the Armstrong-Whitworth " Argosy," which will be seen in public for the first time at the R.A.F. Display mounted steel tube nacelles carried by the centre-section interplane struts. Vpper and lower planes are set at a dihedral angle, but are not swept back. They are built up in five main sections— centre (the lower unit actually is in two sections, being divided by the fuselage), intermediate and outer. Balanced ailerons are fitted to both top and bottom planes. The large biplane tail, placed comparatively high in relation to the line of thrust, is adjustable as to incidence from the pilot's cockpit. The fuselage, of rectangular cross section, is of tubular steel SPAN 90-7i" LENGTH 65-0' WING A.REA, 1886-OSQ.h /\ ARMSTRONG - WHITWORTH "ARGOSY" 3 ARMSTRONG SIDDELEY "JAGUAR" ENGINES THE ARMSTRONG-WHITWORTH "ARGOSY " : General arrangement drawings. 368
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