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Aviation History
1915
1915 - 0565.PDF
JULY 30, 1915. l/UGHTj ALL communications in connection with this section should be addressed to the Model Editor, Flight, 44, St. Marlin's Lane, London, W.C. Correspondents are requested to write on one side of the paper only. Natural Gliding Forms. MR. KINGSLEY W. G. PINNEY writes from Glasgow as follows :— " I notice that in Mr. Bartlett's excellent article published in Flight on June 25th it is stated that even a small tail-plane offers a considerable drag and therefore greatly reduces the speed. •" To observe this I recently made two gliders of 7f in. span, shaped somewhat like a gull. They were similarly shaped, except that one had no tail. " From the glides obtained I find, that although there is very little difference in the gliding angles, the tailless glider is nearly v icw from i\e»f Mr. Pinney's Gliders. twice as fast as the other. Perhaps on account of this speed atmospheric disturbances have less effect on the tailless model." Enquiries. A reader living at Manor Park is anxious to get into touch with any reader who has designs of an aeroplane driven by compressed air ; cylinder, 24 ins. by 3 ins. ; propeller, 12 ins. diameter. A National Competition in U.S.A. In view of the great revival of interest in model flying which is now manifest in various parts of the United States, the Aero Club of America has organised a National Aeroplane Competition on somewhat ambitious lines, and as it may prove helpful to some secretaries on this side, we give the scheme and the rules below. The competition commences in August and ends in October. It is to consist of three monthly model aeroplane contests, to be held in every part of the country simultaneously. These contests, which are to be open to all model clubi in America, are to be timed and judged by officials of the large aero clubs, and wherever there are no aero clubs by representatives of the Aero Club of America. The contests are to be held on any day of the third and fourth weeks of each month, beginning with August next, at places selected by the model clubs. They are to be opened to all Model Aero Clubs throughout the country, who are to hold elimination contests, at their own convenience, to pick out four representatives to repre sent their club at the official contests. The four representatives need not necessarily be the same in each contest. The nature of the contest is to be different each month, as follows:— 1st Month—Distance, launching from hand. (Any type models.) 2nd Month—Duration, starting from the water, open to model flying boats and hydroaeroplanes, the flying boats to be allowed 20 per cent, in addition to the duration achieved. 3rd Month—Duration, starting from ground. (Any type models.) Cash prizes of $50, $25 and $10, offered by the Aero Club of America, will be awarded to the individual members of the various clubs making the best records each month. The silver Villard Trophy, given by Henry S. Villard, will be awarded to the club whose members collectively make the largest score during the three months—this to be judged by the point system. A club becomes the owner of the trophy when it has been won for three consecutive years by its members— the rules governing the winning of the trophy will be progressive in accordance with the progress made in model flying. Roi.BS. 1. The contests are to be held any day during the third and fourth weeks of each month. 2. Each club is to select its own place for holding the contests, and make all arrangements with the local committee of the Aero Club appointed to judge its events. 3. Each club is to hold its own elimination trials during the first two weeks of each month, and when ready to make the official trials notify and make all arrangements with the committee of the Aero Club appointed to judge its events. 4. Only four representatives will be allowed to compete in each contest, but these need not be the same each month. 5. Each club is to co-operate with its local judging committee and arrange things so that the judges will be relieved of all the routine and will only have to officially judge and pass on the events. 6. Each contestant will be allowed three trials in each event and no more. 7. Models may be repaired but not changed during each contest. 8. All distance contests are to be measured with a steel tape, each club supplying its own steel tape (officially passed on by the judges) and arranging its events so as to facilitate quick and accurate measuring of the distances. It is the official duty of the judges appointed to see that this is done carefully and accurately. In the case of the winner in each club the place of landing of his model is to be marked by a peg so that the distance can be measured off again from the starting-point and verified a second time by the judges. 9. All duration events are to be timed with accurate stop watches, in the manner usual for such events. An interesting scale model 80 h.p. Gnome^Morane-Saulnier hydro-aeroplane by Mr. Percy W. Ruff. 565
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