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Aviation History
1915
1915 - 0976.PDF
I/IIGHT However, reverting to the first " twin " built by the British Caudron Co., our readers may form a very good opinion of its general arrangement from the accom panying photographs. Each of the Anzani engines is mounted in a little nacelle, which serves the double purpose of supporting the engine and its tanks, enclosing the latter in a streamline casing. The method of sup porting each engine on one half of the chassis by " Vee " DECEMBER 3, 1915. tail plane, the angle of incidence of which is adjustable, is surmounted by four small triangular fins to which are hinged the four rudders. This large rudder area has, of course, been necessitated by the extra amount of vertical side area presented by the three nacelles, and also partly by the fact that the two inner rudders do not receive any of" the " slip " from the propellers. When flying with only one engine running a large rudder area is also Three-quarter view from in Front of the twin-engined Caudron. struts is one of the many good points of this machine, forming, as it does, a structure of" great strength. Pilot and observer are comfortably installed in the central nacelle, both obtaining a very good view forward as well as downward on account of their respective positions. Apart from the question of engines there is no radical departure from ordinary Caudron practice. The main planes are characterised by the same flexible trailing edge which has always been one of the outstanding features of Caudron machines, and one to which, no doubt, they owe a large proportion of their good stability. As in earlier models, the upper plane is of considerably greater span than the lower, the overhang essential in order to counteract the turning couple. Owing to the long skids, which act as very efficient brakes when landing, the twin-engined Caudron biplane pulls up comparatively quickly, an advantage not other wise easily obtained, as will be readily understood when it is considered that the momentum of such a great mass as that presented by two big engines, pilot and observer, and the weight of the machine itself, is of a very con siderable magnitude. Constructionally the Caudron "Twin" is exceedingly well made, the workmanship and finish being of a very high standard. Some of the detail fittings, of which no description may be given at present, are highly ingenious, and are evidently the work of men Copyright, F. N. Birkett, from the F.N.B. Series. Three-quarter view from the rear of the twin-engined Caudron. being braced by struts running out diagonally from the outer inter-plane struts. One departure from standard Caudron practice will be noticed in the reduction of the amount of trailing edge of the lower plane. From the accompanying illustrations it will be seen that the usual flexible elevator has been discarded and in its stead one of the hinged, divided type fitted. The who are experts in their own particular line of work. In conclusion, we wish to congratulate the British Caudron Co. on this very fine piece of work, and would express the hope that this machine may be followed by many more, and that further development along the same lines may be made to the mutual benefit of our Air Services and the Caudron Co. 940
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