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Aviation History
1911
1911 - 0536.PDF
ffijcjvf JUNE 17, 1911. Model Farman. '[1227] In my model Farman biplane, can you tell me how I can apply runners as the entering edge of the lower plane is just less .than $ in. thick. G. D. S. ROBERTSON, .Kensington. Member of the A. L.B.E. fclHOI"'' ~ c [The accompanying sketch is a suggested method that might iprove suitable.—ED.] Testing Model Propellers. [[1228] I was interested in seeing letter 1019 in FLIGHT because of the resemblance between Mr. F. Law's apparatus and one that my brother and I made lately for comparing our model propellers, though our machine is a little more elaborate. We would be glad to know whether you consider our idea practicable as a method of com oaring propellers of the same diameter. In the accompanying diagram, A is a box which forms the base and in which are put weights to hold the apparatus firmly ; B is the spin lie put through a piece of tubing, C, into the box and held firmly inside the box and by stay wires, H ; D is the boom which swings on this spindle by means of the framework, E, which is •made of metal strips fastened together and to the boom by bolts and nuts. This boom is a cane. F is an arm fastened to the short end of the boom and held by a stay wire, H, and has a brush on the end. This brush is inked, and as the boom swings round pulled by the propeller it marks a curve on a piece of paper, G, which is kept moving regularly by means of clockwork. The distance is then measured between the beginning of each curve, and this distance is, I think, proportional to the speed of revolution and can be •compared with that of other propellers. My difficulty (and can you or any reader help me out of it ?) is to get a motor that does several •circuits instead of only two. Another difficulty I have with models I make is that they cant over the opposite way to which the propeller revolves. Devizes. C. G. PARSONS. SPECIAL NOTICE. Owing to the Coronation Holidays, it is necessary for the issue of FLIGHT dated June 24th to go to press on Monday, June 19th. All Editorial and Advertise ment matter must therefore reach the office not later than first post on Monday, June 19th. IMPORTS AND EXPORTS, 1910-11. AEROPLANES, airships, balloons and parts thereof (not shown separately before 1910). Imports. 1910. 1911. £ £ January 2,516 1,196 February 437 3,129 March... 7,516 11,327 April ... 6,305 2,110 May ... 846 1,707 Exports. 1910. 1911. £ £ 750 1,088 2,950 1*786 128 1,027 950 807 400 2,471 Re-Exportation. 1910. 1911. £ £ 530 Nil — — 600 357 1.47° 4.343 35o 1.972 17,620 19,469 5,178 7,179 2,970 6,672 NEW COMPANIES REGISTERED British Deperdussin Aeroplane Synd.. Ltd., 30, Regent Street, S.W.—Capital ^1,000, in 1,000 founders' shares of is. and 950 ordinary shares of £1. First Directors, Lieut. J. C. Porte, R.N., D. Santoni. E. T. Willows, Ltd.—Capital .£3,000, in £1 shares. Acquiring the business of a manufacturer of aeronautical apparatus carried on by E. T. Willows. ® ® ® ® Aeronautical Patents Published. Applied tor in 1009. Published June 15th, 1911. 21,220. J. D. ROOTS. Flying machine. Applied for in 1910. Published J une 15/A, 1911. 9)554. PAUL. Flying machines. 12,395. H. AND H. A. SANDERS. Flying machines. 12,819. H. LOHMANN. Maintaining equilibrium in aeroplanes. 13,434. R. MCLEAN. Aerial machines. 18,481. W. H. BOOTH. Monoplanes. 18,683. W. F. DUGINS. Aeronautical craft. 19,946. W. S. ROMME. Flying machines. 21,215. M. S. LEWIS. Balancing device for aeroplanes. Applied for in 1911. Published June 15///, 1911. 3,340. R. GiAMPitTKO. Aeroplanes. 8,911. L. SCHMIDT. Aeroplanes. DIARY OF COMING EVENTS. British General Events. July 1 _ Gordon-Bennett Aviation Cup Conttst. July 22-Aug. s Daily Mail Round F.n^la id Contest. Oct. 31 Tune 18 July n Jnly July 1-1 Close of British Michelin Cup. Foreign Fixtures. European Circuit—Paris, Brussels, London, Paris. Paris—Bordeaux—Paris. Italian Circuit, Circuit Berlin—Hanover—Hamburg. ® fe> ® ® PRINCIPAL CONTENTS. An Irresponsible Law Congress Weiss Monoplane. (Described and Illustrated).. Aeroplane in Military Warfare. O. D. Aikinson Mann Model Monoplane. (Described and Illustrated) British Nous of the Week The Aeronautical Society .. .. .'. Royal Aero Club Not;s .. Progress of Flight about the Country School Aero Club Notes From the British Flying Grounds Foreign Aviation News Cross Country Circuits A Variable Speed Monoplane Correspondence.. 51S 519 523 5*4 525 52* 5«7 5*8 530 53-- FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: 1828 Gerrard. su BSCRIIPTTON~RATES. FLIGHT will be forwarded, post free, to any part of the world at the following rates:— UNITED KINGDOM. ABROAD. 3 Months, Post Free .. 6 » 12 „ „ s. d. . 1 8 • 3 3 . 6 6 3 Months, Post Free .. 6 „ 12 >• » s. d. 2 9 < 6 11 e Cheques and Post Office Orders should be made payable to the Proprietors of FLIGHT, 44, St. Martin's Lane, W.C., and crossed London and County Bank, otherwise no responsibility will be accepted. 53*
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