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Aviation History
1914
1914 - 0640.PDF
KITE AND MODEL AEROPLANE ASSOCIATION. Official Notices. British Model Record*. Single screw, hand-launched Duration ™»~" • *•• DS Single »cr.w,ri~ off ground^ gj£J» *«*>«—. *» - SSSS Single-tractor screw, hand- / Distance ..1 Duration J Distance launched Do., off-ground ... Single screw hydro., water ... ... Single-tractor, do., do. ... Twin screw, do., do. Knginc driven off grass ... Duration | Duration Duration Duration Duration D. Driver... R. Lncas ... C. Hayden W. E. Evans W. E. Evans 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 85 sees. 590 yards. 137 sees. 200 yards. 64 sees. 365 yards, a mins. 49 seen. 266 yards 91 sees. 190 yards. 9* sees. 35 sees. v, tea ',-1 Mm. JI sees. Affiliation.—It is with pleasure that the Council announce the affiliation of La Ligue Krancaise du Cert-Volant. This league has twenty-seven kite associa tions affiliated to it, and it has become affiliated for the purpose of the proposed International Kite and Model Meeting. French Competitions.-Messrs. L. Ingram and A. W, Howkins officially repre sented the Association at the kite meeting on May 30th, 31st, and June tst at Boulogne. Although they did not compete they were thanked for the assistance they gave to several of the competitors (with the approval of the judges). Kite Flying Competition.—Wimbledon Common, on Saturday, June 30th, at 3.30. Entries close June 17th. Open kite competition for prizes by Messrs. Brooke and Westhorp. Prises: 1st, BrooKite, value 30s. ; 2nd, BrooKite, value ay. : third, BrooKite, value x$s. (the same as Mr. G. Marconi has been using for wireless telegraphy). Additional rules governing this competition : x. Competitors may use any kind of kite, with minimum measurement of 20 ft. computed by Kule a. 2. Competitors must be at the judges' flag at 3 p.m. sharp, any not then present will be disqualified. 3. Total length of line or wire to be 300 yards, but not exceed 310 yards. 4. Each competitor is allowed one assistant, who must wear the competitor's number. Any other person assisting will render the competitor liable to disqualification. 5. Marks will be awarded as follows: Angle, one mark for each degree attained, plus 3 extra for each degree above 50. Stability, 125 ; strength of construction, 75 ; portability, so. Model Comprfltlon.—Wanstead Flats, I,eytonstone. Station, Forest Gate, G.E.Ky. Saturday, June 27th, at 3 o'clock. Entries close June 20th. Longest flight competition for models, rising off ground under their own power (open to the world). Prises presented by Mr. A. W. Gamage : 1st, challenge cup and gold medal; 2nd, silver medal : 3rd, bronze medal. Additional rules governing this competition: 1. Competitors must be at the judges'flag at 3 p.m. sharp. Those not present at that time will be disqualified. 2. This competiton will be decided on the longest flight and not on the average. Official Trials,—All entries for the official trials, to be held on Wimbledon Common on the 20th, must be sent in by Saturday, the 13th, to Mr. H. A. i.yche. Special forms can he bad for trials from the gen. hon. secretary. Programme.—The official programme i-s now publiibed, and any members or readers who have not received a copy should send to the gen. hon. sec. at once for same, enclosing stamp for postage. Badges.—The official badge for year 1914-15 is now ready, and all members will have one forwarded on receipt of their subscription. The wearing of the badge shows the judges that their subscription for current year has been paid. Those members who have only sent $s. should forward the extra is. (as the sub scription for year was raised at the general meeting), and their badge will then be forwarded. 27, Victory Road, Wimbledon. W. H. AKEHURST, Gen. Hon. Sec. 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. Leytonstone and District Aero Club (64, LKYSPRING ROAD). JUNE 14TH, flying Wanstead Flats, rj.30 and 10.30 a.m. June 27th, after noon, Gamage Cup competition. Route to Wanstead Flats will be published next week. UNAFFILIATED CLUBS. Flnsbury Park and District (66, ELKORT ROAD, HIGHBURY, N,). JUNK 13TH, flying at Finsbury Park, 3 p.m. ; r.o.g. distance contest for tractor machines at 5 p.m. S. Eastern Model Ae.C. (I, RAILWAY APPROACH, BROCKLBY). FLYING meetings at week-end on Woolwich Common and Blackheath, at the usual times. ® ® ® ® CORRESPONDENCE. Brakes for Aeroplanes. [1868] With reference to the recent letters on "Brakes for Aeroplane? " that have appeared in your paper, I should be pleased if you would publish the following. I entirely agree with Messrs. Brook and Mair, that brakes would be of great value to aeroplanes, but I do not find it so easy to agree with their arrangement of applying brakes to the wheels of the landing chassis. With this arrangement, it seems that one or two alternative disasters is likely to occur, dependent on the position of the wheels, relative to the centre of gravity of the machine. (i) If the wheels of the landing chassis are not very far ahead of the e.g. of the machine, which is travelling at a considerable speed on alighting, it is highly probable that the aeroplane will make a sudden nose dive, on applying brakes to the wheels of the chassis, and disaster will follow. (ii) If the wheels are very far forward, and so at a considerable distance from the e.g., the application of brakes to the wheels will have very much the same effect as in the case of the front wheel of a bicycle, and there is great possibility of severe shocks being sustained by the machine and its occupants. Would it not be better if air brakes could be applied more nearly in a horizontal plane with the e.g., by suddenly turning surfaces into the vertical position, perpendicu ar to the direction of motion, and so exposing them to the full decelerating effect of the incident wind ? In this way I think a very effective brake could be produced Would it not be advantageous also to arrange a drag which could DurinVnight it could be attached beneath the tail boom, and immediately on alighting could be released by the pilot, and a brake-analogous to the rear brake of a bicycle thereby obtained. 6 HERMAN SHAW. Royal College of Science, South Kensington. Oscillating; Wing-6. [i860] Respecting my article on oscillating wings, one of your correspondents suggests that this phenomenon of increased reaction may explain the superiority of tractor screws. I am not clear whether experience shows a clear advantage with tractor screws over and above that due to the direct incidence of the slip stream, but would point out that it is by no means certain that the slip stream is subject to a periodic variation corresponding to the position of the propeller such as he suggests. If the projected area of the propeller is a sufficiently large fraction of the "disc area," the reaction is almost continuous, being carried on from blade to blade with little or no intermission, the gaps between the blades serving to allow adequate feed. It is true that some of the theories of propeller action have considered a spiral stream commencing from each blade, but I am of opinion that the stream becomes almost uniform throughout the whole circle at a distance behind the propeller which is quite a small part of the diameter. It is, however, a matter for experiment. HERBERT CHATLEY. Chinese Government Engineering College, Tangshan, North China. May 20th, 1914. ® ® ® ® IMPORTS AND EXPORTS, 1913-1914. AEROPLANES, airships, balloons, and parts thereof (not shown separately before 1910). For 1910 and 1911 figures, see FLIGHT, January 25th, 1912, and for 1912 and 1913, see FLIGHT for January 17th, 1914:— Imports. Exports. Re-Exportation, 1913. 1914. 1913. 1914. I9!3- I9I4- £ £ £ £ £ £ January 12,097 5,945 4,005 210 1,510 879 February 17,361 28,132 3,447 106 690 441 March ... 20,425 27,731 1,924 1,934 1,042 1,440 April ... 15,593 11,384 5.524 1,175 I.4I3 L473 May ... 31,241 17,062 3,726 4,059 830 9,484 5,485 13,717 14.73'- I5.°3>- 16,367. 16,73*. 19,681. 20,479. 6,764. 7.987^ 8,594- 8,758. 116,717 90,254 18,626 7,484 ® ® ® ® Aeronautical Patents Published. Applied for in IBIS. Published June \th^ X914. F. FILIASI. Longitudinal stability and landing device. D. E. SHAW AND J. J. BROWNRIDGE. Control of aeroplanes. L. CLEMENT. Aeroplane wings. S. B. W. H. Voss. Flying machines. M. E. YOUNG. Aerial machines. A. SPRATER. Stabilizers. Applied for In 1014. Published June \th, 1914. A. CLEMENT-BAYARD. Frameworks for dirigible balloons. F. R. Pio. Aeroplanes combined with parachutes. A. CLEMENT-BAYARD. Car-suspensions for dirigible balloons. W. H. NOSWORTHY AND S. J. PRESCOTT. Flying machines. FLIGHT. 44. ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: l828Gerrard. SU BSCRIPTION~RATES. FLIGHT mill be forwarded, post free, at the following rates:— UNITED KINCDOM. ABROAD. s. d. s. d. 3 Months, Post Free... 3 9 3 Months, Post Free... 5 o 6 i, » ... 7 6 6 ,, „ ... 10 o 12 .» „ ••• 15 o 12 „ „ ... 20 o Cheques and Post Office Orders should be made payable to the Proprietors of FLIGHT, 44, St. Martin's Lane, W.C., and crossed London County and Westminster Bank, otherwise no responsibility will be accepted. 64O
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