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Aviation History
1914
1914 - 0771.PDF
>• Two excellent photographs of a model in flight by P. Rolfe. motor car, is provided, allowing the wing on the outside of a curve to flap harder than the inside one—equivalent to automatic warping. Also by this arrangement either wing would yield to a gust. The tubular construction, though perhaps not the happiest arrangement, was adopted for experimental purposes to allow of alteration of the centre of gravity if necessary. The wings and all the machinery are attached to the outer sleeve, which can be slid along the inner tube to adjust the balance. Model Aviation In Germany. " I enclose you two photographs taken here of two models I have finished lately," writes Mr. P. Rolfe (Nurnberg, Germany). '' The smaller view is of an ' Excelsior' tractor, which has not more than 18 ins. of rubber. The model with rounded wings is larger, 2 ft. 2 ins. span, but they both have 8-in. diameter propellers, and they fly equally well. Both rise without a push in less than 6 ft., and hand-launched fly about 150 to 200 yds. The climbing angle of the larger model is really extraordinary, and the glide, too, is extremely flat. As far as I know the Excelsior is the most efficient, practical model of its size, and I am really astonished at the height and dis tance attainable for so large a weight and so little rubber. [Our cor respondent omits to state either the weight of the model, of the rubber, or of the duration, a much safer test than distance.] " The people here, speaking generally, are not the least bit ® ® KITE AND MODEL AEROPLANE ASSOCIATION. Official Notices. British Model Records. Single screw, hand-launched Duration interested in models, and there are very few firms who make models in South Germany. All the models I have seen are Etrich ' pigeons, and very roughly made ; but now there are several firms beginning to specialize in cheap, power-driven models which have great promise, and a better market (here) than the rubber-driven models. Of course, all model material is exorbitantly dear, and not very good at that. There are no model clubs here whatever, though I believe in North Germany the model is more popular than here in Bavaria. The photos are both genuine, and not' faked ' to appear flying." Twin screw, do. Single screw,rise off ground- xtmtwa Distance Duration Single-tractor screw, hand- / Distance launched (.Duration Do-off-ground «££ Single screw hydro., off-jDuration water J Single-tractor, do., do. ... Duration Twin screw, do., do. ... Duration Engine driven off grass ... Duration J. E. Louch R. Lucas ... G. Hayden W. E. Evans J. E. Louch 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 D. Stanger 95 sees. 590 yards. 137 sees. 290 yards. 68 sees. 363 yards. 2 mins. 40 sees. 266 yards 91 sees. 190 yards. 94 sees. 35 sees. 29 sees. 60 sees. 51 sees. Official Trials.—The monthly official trials take place to-morrow, Saturday, on the Leytonstone Giound. Competition.—The sixth annual contest for the Baden-Powell Shield for the H.Bedford Mr. H. Bedford's very neat device for raising and lowering* the wheels on his hydroaeroplane Olympia model. ® ® best kite of the year takes place on Wimbledon Common at 3.30 p.m. on Saturday of this week (18th). Also two entries have been received for the Altitude Challenge Trophy ; for this trophy attempts can be made also on August 22nd and September 5th. Re«ult of Competitions.—The Steering Competition for Models took place on Saturday, July nth, at Wimbledon, The result was: jst, J. Louch, K. and M.A. \. and Leytonstone, winner of cup ; 2nd, H Bedford, K. and M.A.A. and Leytonstone, winner of silver medal of the Association. The Junior Duration Contest also took place, and the result was: 1st, Scout Mason, ist Wanstead Slip Troop B -P. Scouts and Leytonstone Club, winning the r.o.g. model pre sented by Mr. A. F. Houlberg ; 2nd, J. Powley, winning the r.o.g. model presented by Mr. H. Bond ; 3rd, Mr. Blake, winning the r.o.g. model pre sented by Murray, Son and Co. Messrs. Akehurst, Lyche, and Jannaway acted as judges. Royal Aero Club Hydro Competition.—To be held at Welsh Harp, Hendon, August 8th, at 3 o'clock ; entries close first post August ist; for hydro-aero planes rising off water (open to the world). Prizes: xst, £5 $s. (presented by the Royal Aero Club) and certificate of the Association ; 2nd, £2 2s. (presented by Major Sir Bryan Leighton, Bart.); 3rd, £1 (presented by Mr. Reginald Balston). Tests : A, duration ; B, stability ; marks, duration actual seconds 25, stability 25. Additional rules governing this competition : 1. Competitors must be at the judges' flag at 2.45 ; any competitor not present at that time will be disqualified. 2. Models must not weigh less than 1 lb. 3. All com petitors must launch their machines in the same direction,, and one trial to be 771
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