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Aviation History
1914
1914 - 0745.PDF
Two views of the Billlnghurst model flying boat. derived from these tests, I am shortly starting on the construction of a second model of this type, embodying all the latest ideas, &c, which have suggested themselves, and have little doubt of its ultimate success. KITE AND MODEL AEROPLANE ASSOCIATION. Official Notices. British Model Records. Single screw, hand-launched Duration ... Unscrew, do gj~ ~ Single screw.rise off ground g^n« - rr . j f Distance ... Twin screw, do Duration ... Single-tractor screw, hand- / Distance ... launched \ Duration ... Do. off-ground ^SS~ Single screw hydro., off-jDurat!on ... water ... ... ... J Single-tractor, do., do. ... Duration ... Twin screw, do., do. ... Duration ... Engine driven off grass ... Duration ... Inter-Club Contest for the Farrow Shield and Baden-Powell Medals.—This competition took place on July 4th and the following clubs enter the second round on August 22nd, viz. : Paddington, Croydon, Leytonstone, Rcigate and Redhill and Aero Models. The contest between Wimbledon and Paddington on the Paddington ground resulted in Paddington winning, and the result may be of interest to model readers. It was as follows :— J. E. Louch K. Lucas ... G. Hayden W. E. Evans J. E. Louch L. H. Slatter J. E. Louch C. C. Dutton J. E. Loucb 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. 365 yards. 2 rains. 49 sees. 266 yards 91 sees. 190 yards. 94 sees. 35 sees. 29 sees. 60 sees. Si sees. Team. WIMBLEDON. Trials. - "2 i ,° > . (-1 < T. D. C. Chown 62 55 42 159 53 D. Easdale ... 5 73 65 143 47? F. W. Powell... 89 79 7 175 58J G. Hayden ... 55 38 64 157 52J D. Laing ... 5 5 33 43 *4i A. F. Houlberg 3 7 4 14 4'i The official observers in this A.F.K.M.A.A., and M Team. W. E. Evans... C. C. Dutton... R. Bird D. Driver F. W. Johnson H. Wooley ... PADDINGTON. Trials. 45 5 27 4= 59 Si B O H 9= 120 120 16c 143 107 < 40 40 3«i 475 351 competition were Messrs. H. A. Lyche, Levy assisted by the secretaries of the two clubs, Messrs, Chown and Evans. Competitions.—The Steering Competition and Junior Duration Competition takes place to-morrow (Saturday) afternoon on Wimbledon Common at 3 p.m. All entries for the Baden-Powell Kite Contest must be posted to reach Mr. Lancbester by Saturday, July nth. Also, all entries for model record trials must reach Mr. Lyche same date. Official Trials.—The monthly trials take place on Wanstead Flats on July z8th at 3 p.m. Kite Contest.—The Association's Altitude Challenge Trophy can be competed for on July 18th. For full details see page 7 of programme, it should be noted that in this contest competitors may have assistants, it not being limited to two assistants on account of the work entailed with the winch. It is to be hoped that the well-known fliers Messrs. C. Brogden and B. S. Varnals will be among the competitors for this handsome trophy. Petrol Engines for Models.—Now that a petrol engine weighing under 3 lbs. has been produced, it is hoped that several modellists will enter for the handsome trophies offered by Sir John and Lady Shelley for models applicable to full-size machines. It is claimed for this new engine that the makers guarantee 2,900 revs., and the makers claim it is the smallest official petrol motor in the world. It is hoped by open competition to prove this is the small motor we have been waiting for. The following is a brief description given by the makers : — " In order to get the greatest simplicity and reliability the two-stroke system was adopted, and the motor has no valves, spring, &c, which reduces liability to breakdown to a minimum. The carburettor can be fitted at any angle by a special device. The oil reservoir mounted on the feed-pipe is transparent, to allow the amount of oil to be always visible. The air inlet and the sparkling are adjustable." Full details of engine can be obtained from any advertiser in official programme. Official Badges.—Many members have sent their annual subscription to the gen. hon. sec. of $s., but their attentien is called to the new subscription, which is or. and includes the badge. Will all those members remit at once the sum of is. id. to the sec, so that they may have the official badge of the year sent them without further delay, as it might disqualify them in any competition they might enter, as all members must wear the badge in the competitions ? 27, Victory Road. Wimbledw. W. H. AKEHURST, Gen. Hon. Sec Should any of your readers wish to view the model, it may interest them to know that it will be on exhibition at the Anglo-American Exposition at the White City, Shepherd's Bush, from May till October. ® ® ® ® AFFILIATED MODEL CLUBS DIARY. CLUB reports of chief work done will be published monthly for the future. Secretaries' reports, to be included, must reach the Editor on the last Monday in each month. Aero-Models Assoc (30, CORRINGHAM RD., GOLDERS GREEN). JULY IITH, practice for all types, 3 o'clock, Hampstead Garden Suburb Fields. Leytonstone and District Aero Club (64, LEYSPRING ROAD). JULY 12TH, flying on Wanstead Flats at 6.;o and 10.30 a.m. Paddington and Districts (77, SWIJNDERBY ROAD, WEMBLEY). JULY IITH, competition for single propeller models, minimum weight 4 ozs., minimum loading 4 ozs. per sq. ft. Average duration r.o.g. UNAFFILIATED CLUBS. Flnsbury Park and District (66, ELFORT ROAD, HIGHBURY, N.). JULY IITH, flying, Finsbury Park Kite Ground, from 3 p.m. Ilford Model Ae.C. (83, ENDSLEIGH GARDENS, ILFORD). JULY 12TH, flying at the Aerodrome, Hog Hill, Hainault Forest, Chigwell Row, 10 a.m. Members are specially requested to meet at the club's temporary workshops on Saturday, July nth, at 2.15 p.m. to assemble the machines for the Ilford Hospital Carnival. S. Eastern Model Ae.C (i, RAILWAY APPROACH, BROCKXEY). USUAL flying meetings this week-end. July 12th, an important committee meeting will be held on Blackheath. ® ® ® ® CORRESPONDENCE. Brakes for Aeroplanes. [1876] May I further trespass on your valuable space in support oi my recent letter on the above subject ? Mr. Mair in his letter of last week fails to convince me of the practical utility of the type of brake he suggests. As he remarks, it is common knowledge that the brakes of a moving body should be applied gradually, but as the centre of gravity of an aeroplane is so high compared to the small size of the wheels, it appears, that in order to prevent a nose dive, the application of the brake will of necessity have to be exceptionally slow. In that case, the machine will travel a con siderable distance before appreciably losing speed, and so the brake will not fulfil its purpose. It is evident also, that a large force will be required to quickly stop a machine of half a ton weight, moving at 30 tn.p.h., and especially as this has to be done by applying brakes to wheels of only seven or eight inches radius. I cannot fail to think, however, that disaster would soon be encountered by the inexperienced aviator, who, in the excitement of a difficult and forced landing, locked his wheels a second too soon, or applied his brake a little too harshly. Mr. Mair suggests that with an air brake the speed of the machine would actually be increased when landing in a following wind, but possibly he forgets that an aviator seldom alights with a following wind (and especially one of greater velocity than the landing velocity of the machine), as he is well aware of the danger he exposes himself to by so doing. I do not consider that the time is yet at hand when the effect of brakes on the surface of the ground should be held to be of great importance, as they are mostly needed in cases of emergency, when, I think Mr. Mair will agree, the question of life still claims the whole of our attention. It has been found best, in the case ol moving bodies, to apply brakes from behind, and I see no reason why aeroplanes should provide any exception to this custom. " Mechanic" is by no means the first to suggest a reversible engine with which to apply brakes to a machine, and probably he is unaware of the difficulties that have to be overcome before this can be done. Might I ask how he would reverse his engine against 745
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