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Aviation History
1920
1920 - 1268.PDF
DECEMBER 16, 1920 It- The Do. Rs. II : This machine had the engines placed in the hull and transmission drive to three pusher airscrews. Note the wing roots on the boat and the strut bracing. • especially considering that she was designed in 1914. Un- fortunately no figures of wing and power loading are available, nor data relating to her performance. The latter must, however, have been such as to warrant going on with the altogether unlike that of the Sopwith " Bat boat." The tail planes are carried on outriggers from the main hull, and com- prise a biplane tail, with a small elevator placed between and slightly ahead of it, and of twin balanced rudders. The !S ^ ^ ^ ss The Do. Rs. Ila: Side view. [& - ^ experiments, although the next model was totally different in its general lay-out. The Do. Rs. II and Rs. Ila, 1915-16 As will be seen from the accompanying photographs, the Rs. II, as the next type was called, has a short boat hull, not top main plane shows much the same arrangement as that of the previous model, but the lower plane has shrunk still further and is, in fact, reduced to two short wing stumps attached to the boat hull, from which it is braced by sloping tubes. The short span of these wing roots necessitated a The Do. Rs. Ila : This machine is a development of the Rs. II, and has the engines placed above the hull, with direct drive to the airscrews. I270
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