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Aviation History
1913
1913 - 1181.PDF
NOVEMBER I, 1913. 1/5GHT through the paper, the flow round the section and the eddies produced, if any, will be shown clearly. The operation should only take a few seconds, and if the paper is removed and allowed to dry, it will furnish an indelible record of the flow, the strut section being marked in pencil. So much for the mode of operation ; now for constructional details. Half a pound of glass tubing, J in. outside diameter, will be required, costing about 8d. A florence flask is fitted with a cork, in which is bored two holes and glass tubes fitted, as in sketch. The tubes can be bent by holding them in a bats-wing gas- flame until softened, and gradually bending round. The tube (r) passes through a cork into the chamber, B, which in my apparatus is composed of an empty 2 lb. tin of Lyle's golden syrup. In one side of this are bored eight J in. holes, which all but touch. The tubes, C, which are exaggerated in sketch, are about 4 ins. long. the result that if this experiment be performed indoors immediate ejection by the mistress thereof is sure to follow when the gas begins to diffuse ; it is best to perform it in the open. The preparation of the piper merely consists in soaking it in a fairly strong solution of lead acetate and using it whilst damp. Lead acetate solution is poisonous, and should not be mixed in domestic vessels. A Correction. The model scale Caudron biplane which was described and illus trated in October 18th issue as the work of Mr. C. Desoutter, was, we now learn, the joint work of Mr. D. Hiscox and Mr. C. Desoutter, the machine being the work of the former, and the power plant of the latter. We much regret the omission of Mr. Hiscox's name ; but where any piece of work is a joint production, it cannot be made too clear what part each has played in the production thereof. Alft FROf-1 pump IRors SULPHIDE: tfc B D rwcw S , STRUT UNnCR / ~„ ..jTLM IBlMM.'W'.'Vn'fflWWaWW SI1C OF S^ULW RNU 5TBO! I6> GBtnTl-y END ELLN/rYHOrs = or v The jets should be drawn out in bats-wing flame, as in drawing, and then the end carefully rounded off in the flame. The aperture should be extremely minute. Any text-book on chemistry will give fuller particulars on glass bending to those not very conversant with it. The tubes are then firmly puttied into the holes. The wooden stand, D, needs no further description. The paper, E, should measure some 5 x 4 ins., and should be attached to the wooden stand by means of paste round its edges, care being taken to see that it lies flat on the stand. The particular apparatus used to force air through the apparatus mu=t be left to individual choice. Personally, I used an aspirator such as is used in ordinary chemical laboratory practice. The chemicals to be purchased are ferrous sulphide, hydrochloric acid and lead acetate. The hydrochloric acid should be slightly diluted, and placed in the flask, A, with some ferrous sulphide. The flask should be slightly warmed before starting the experiment, when sulphuretted hydrogen will be given off freely. Now this gas possesses a most vile and penetrating odour, with The Leytonstone and District Aero Club. This club was founded on October ist, 1912, with 5 member!, and has increased so rapidly that the membership is now over 50. At the Olympia Show last February, it exhibited S models. At the recent Mode! Engineer Exhibition, the club showed 13 models, in cluding 1 weight lifter by Mr. J. E. Louch ; 2 tractors by Messrs. S. Chapman and G. Hawthorn and 10 r.o.g. models. One member, Mr. Louch, holds three British records, and another, Mr. H. Bedford, one ditto. Several members at the present time are working at power-driven models. The club is affiliated to the K. and M.A.A. Mr. F. Handley Page is the president. As a proof that the number 13 is not always an unlucky one, this club was successful on Saturday last at the Hendon Aerodrome in winning the inter-club contest between the clubs which exhibited at the Model Engineer Exhibition, thereby gaining the silver medals presented by Mr. F. K. McClean for the best aggregate of marks obtained by the first six competitors of any one team. ® ® ® ® Official Notices. British Model Records. f Distance . (.Duration . Duration / Distance . \ Duration . / Distance . 1 Duration . f Distance .. t Duration . > Duration .. Duration .. Duration .. R. Lucas ... . A. F. Houlberg . H. Bedford . L. H. Slatter .. . J. E. Louch . C. C. Dutton . J. E. Louch . C. C. Dutton . J. E. Louch . L. H. Slatter . C. C. Dutton L. H. Slatter . 590 yards. . 129 sees. . 49 sees. . 365 yards. 2 nuns. 49 sees 266 yards. 68 sees 190 yards. 45 sees- 35 sees. 29 sees. 60 sees. KITE AND MODEL AEROPLANE ASSOCIATION. Twin screw, hand-launched . Single screw, do Twin screw, rise off ground : Single-tractor screw, hand- launched Do., off-ground Single screw hydro., off- water Single-tractor, do., do. Twin screw, do., do. " Model Engineer"" Exhibition Flying Trials.—The flying trials in the , power-driven r.o.g. and weight-carrying trials took place at the London Aero drome, on Saturday, 25th, by kind permission of the Grahame-White Co. Although not an ideal day there was some good flying. The results were as follows : R.o.g. competition— 1. J. E. Louch (Leytonstone Ae. Club), 183 marks, Silver Model Engineer Medal. 2. F.Wilkinson (Wimbledon „ ), 157 ,, Bronze ,, „ 3. L. H. Slatter( ,, ,, ), 141 ,, ist class ,, Diploma. 4. H. G. Bond (Leytonstone ,. ), 134 ,, 2nd ,, ,, ,, Power-driven models: D. Hiscox, Bronze Model Engineer Medal. No . awards were made in the weight-carrying contest, as no model flew the minimum time. The hydro, trials were held at the Welsh Harp in the afternoon, the results being: ist, L. H. Slatter, Silver Model Engineer Medal ; 2nd, W. J. Williams, First Class Model Engineer Diploma ; 3rd, F. W. Jannaway, Second Class Model Engineer Diploma. The team contest for the handsome medals, presented by Mr. F. K. McClean, • was as follows :— R.O.G. Contest. Leytonstone Ae. C ub 1 w w 2 •£ i « 3 iiS IQIQ 1(5) J. E. Louch ... H. G. Bond ... S. C. Hersom ... F. E. Grattan ... 35!no38 S6 6, 32 i 84 37! 74 F. H. Hawthorn I32 70 H. Bedford ... sfi| 55 : 33 22 v , •••i Wimbledon Ae c *'* . ! Name. = •- l\ 3 5 3 "3 FSI ;Q.Q «8j '34 fU «33 >;o to. F. Wilkinson ... L. H. Slatter ... A. F. Houlberg T. D.C. Chown 26 96 34 69 V) 27 49 4» ub . Ae. Models (N. Branch). ... ! '« •= . N..me. c* m 9 So i SI? 35,157 38141 aS|tt6 10 79 = fr •B J M 3 « al<a -• H J. McKirnie ...I34I38I 8| 80 Hydros. Wimbledon Ae. Club. L. H. Slatter 14060I40I140 W. J. Williamsl25 35I33I 93 Ae. Models (N. Branch). H. Weston ...'40 20111 7' The results show Leytonstone ist, with 818 marks; Wimbledon and, 726; Aero Models 3rd, 151* (*the full team could not attend to compete). The K. and M.A. Association stood out to give the affiliated clubs a chance to gain the medals, and as an inducement to get a good all-round team contest at Aero Show in March. Should different results appear elsewhere, the hon. sec. admits his error, which he found out on going through after announcing the results. The members of the affiliated clubs wish to convey to the judges their thanks for the way in which they judged. They were; Sir John Shelley, Mr. R. M. Balsion, Lieut. T. O.'B. Hubbard, Dr. A. P. Thurston ; also the following assisted in judging at the flying trials : Messrs V. E. Johnson and F. Mayer, and Sir John C. Shelley entertained the competitors to tea at the Welsh Harp. 16-01. Hydro. Contest.—This contest was held after the above competitions at the Welsh Harp, the results being :—ist, L. H. Slatter, Antimony Trophy ; and, H. G. Bond, Bronze Medal of the Association. There were eight entries for this competition. Records.—Mr. L. H. Slatter, during the Model Engineer trials, raised the record from 45 to 60 sees. Inter-Club Contest.—Mr. Thomas Farrow, chairman of Farrow's Bank, has given a handsome challenge shield to the Association for competition among the affiliated clubs. The size is to be 36 ins. by 29 ins. It will be exhibited as soon as ready, and will be shown at the Aero Show. Full details will be announced later. Engine Bench Test.—The results of this will be given in next week's notes. 27, Victory Road, Wimbledon. W. H. AKEHUKS 1 Hon. sec. 1207
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