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Aviation History
1934
1934 - 0677.PDF
FLIGHT, JULY 5, 1934 us: isre. THE LATEST VERSION : General Aircraft Co.'s S.T.10 has two 90-h.p. Pobjoy " Niagara engines. (FLIGHT Photo.) " Envoy " is very quiet. The machine, by the way, has a normal range of about 400 miles at cruising speed. Annstrong-Whitworth.—Of the two machines exhibitedand demonstrated by Sir W. G. Armstrong-Whitworth Aircraft, Ltd., one, the A.W.19, had already been seenat the R.A.F. Display. This was the new " General Purpose" type, fitted with 700-h.p. Siddeley "Tiger"engine. A feature of the design is that the fuselage fills the gap between the wings, and the pilot is placed aheadof the top plane, where his view is very good. The second aircraft shown by this firm was also amilitary type, the " Scimitar," a single-seater fighter fitted with the 640-h.p. Siddeley " Panther " engine.Brightly polished aluminium covering over a large portion of the fuselage made the name seem rather appropriate,and the general finish of this machine was much admired. When it came to demonstrating the machines, theA.W.19 took off first, piloted by Mr. Campbell Orde. One did not expect sensational flying from a general pur-pose type, but to the surprise of everyone the machine was looped and rolled. It obviously handles well. Mr.Turner Hughes demonstrated the " Scimitar," and it was considered by many of those present that his flying wasthe most impressive seen during the series of displays. His steep climbs, with the machine almost vertical, werespectacular, but what particularly pleased the discriminat- ing onlookers was the series of short and sharp S-turns,if they could be called turns. Flying at high speed, the pilot would do a vertical bank to one side, followed imme-diately by a vertical bank to the other. The lateral control of this machine must be extremely good. Thesame sort of manoeuvres were repeated with the machine flying quite slowly. Blackburn.—The Blackburn Aeroplane & Motor Co., Ltd.. had originally intended to be represented by their T.S.R. machine, but as this was required by the Air Ministry, the machine was not available. The new Day and Night Fighter was expected to take its place, but could not be got ready in time at short notice, and the Blackburn company had to be content with showing four B.2 train- ing machines, small side-by-side two-seaters, variouslyfitted with " Gipsy III," " Gipsy Major," and " Hermes IV " engines. One of the four machines was a new typeof trainer, fitted with blind-flying hood, camera gun and dummy P.7 camera. In the flying demonstration three of the B.2 machines,all painted light blue, took off together in formation, a fourth following a little later. While the formation flewaround the aerodrome, the single machine did rolls, loops and inverted flying. Altogether they gave a very interest-ing and convincing show. Bristol.—A single machine represented the Bristol Aero-plane Co., Ltd. This was the " Bulldog IV," which had taken part in the fly:past at the R.A.F. Display. Themachine looks well in its cream and black paint, and the fact that it is fitted with the Bristol " Perseus " 600-h.p.sleeve-valve engine lent added interest. It is claimed that the maximum speed of the machine is well in excess of200 m.p.h., which must be regarded as very good for a machine of the Day and Night Fighter class. Fit. Lt. C. F. Uwins demonstrated the " Bulldog IV "by a series of dives and vertical " zooms," the machine handling very smoothly. The engine emitted, at certainspeeds, a curiously ringing whistle, which seemed to be composed of several slightly different notes. This whistle isnot, we are informed, due to the sleeve-valve engine as such, but to the air rushing through the small gapsbetween the tops of the cylinders and the engine cowling. The machine is the standard type except for the engine,but small modifications have been incorporated, including the fitting of a Dowty tail wheel. De Havilland.—The De Havilland Aircraft Co., Ltd., wasrepresented by a D.H. 86, a " Dragon," a " Leopard Moth " and a " Tiger Moth." The machines are alreadywell known to readers of FLIGHT, and it will suffice if werecall that the D.H. 86 has been designed primarily to meet the requirements for machines to operate the Singapore-Australia air route. It is a biplane with very tapered wings, fitted with four " Gipsy Six " engines of 200 h.p.each. The cruising speed is between 145 m.p.h. and 150 AIRSPEED " ENVOY " : This machine is fitted with twoJ85-h.p. Wolseley engines. (FLIGHT Photo.) 679
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