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Aviation History
1911
1911 - 0082.PDF
17DCHT JANUARY 2%, 1911. It is of interest to note that the centre of gravity of this model is very high. There are no suspended parts whatever. The only difficulty I have so far experienced is the fact that the model flies so straight that it is difficult to persuade it to turn. Altering the rudder has a tendency to bring the machine to the ground. Eccles. WILLIAM BOOTH. Thrust for Models. [1048] I notice in FLIGHT a letter from Mr. Stoner (980), in which the question was raised as to the thrust required by a model having a certain gliding angle and weight. In answer you give the formula as W tan y ; but assuming 7 = 45°. the thrust required will be equal to the weight of the machine, which is obviously incorrect, as a machine having a vertical drop would require a thrust equal to its own weight to keep itself sustained in the air. It seems to me that the formula which you give is incorrect. W sin y is more correct. Edgbaston. G. H. WOOD. "FLIGHT" ART PAPER EDITION. IN response to numerous requests, the publishers of FLIGHT have arranged to print a limited number of copies each week upon art paper, thereby enabling the high quality of the illustrations and matter to be fully appreciated. These can only be supplied by subscription, the annual charge, post free, being : United Kingdom, 15^. ; Abroad, 20.r. Present subscribers can secure these copies by paying the difference pro rata of their unexpired subscriptions. Application should be made to the PUBLISHER, 44, ST. MARTIN'S LANE, W.C. DIARY OF COMING EVENTS. Mar. 10-18 July July Oct. 31 Jan. 30 Jan. 31 Feb. 7 Feb. 9 British General Events. Olympia Aero Show. Daily Mail Round England Contest. Gordon-Bennett Aviation Cup Contest. Close of British Michelin Cup. British Clubs and Associations. Lecture at London Institution by Mr. Rober i Restaurant. By R. P. Grimmer at March April 11 (i Art of Aviation. W. A. Brewer. Roval Aero Club Annual Dinner, Prince's " The Work of the School Aero Club.' Caxton House (A.A. and M.U.). "From Kites to Aeroplanes." Lecture by Mr. S. F. Cody at Imperial Institute (Aerial League and Kite and Model Aero plane Association). " Pressure on Planes and Curves." By Mr. F. Handley Page at Royal Society of Arts. " Plan Shape of Flying Machines. Its Relation to Control and Longitudinal Stability." By A. P. Thurston, B.Sc, at Caxton House (A.A. and M.U.). " Some Lessons of 1910." By Major J. N. C. Kennedy at Caxton House (A.A. and M.U). " The Manufacture, Properties and Use of Elastic Motors." By F. B. Beringer at Caxton House (\.A. and M.U.). Annual General Meeting, Aeronautical Society. "The British Pioneers of Aviation." By A, C Horth at Caxton House (A.A. and M.U.). Shipping "Shell" spirit, the fuel which Mr. T. Sopwith used in his flight into Belgium for the De Forest Prize, on board the "Terra Nova" at Sydney for use on Capt. Scott's motor sleighs during his Antarctic Expedition. RECORDS. Duration.—Henry Farman (France), at Etampes, on a Henry Farman biplane fitted with a Gnome motor: 8 hrs. 12 mins., covering 463 kiloms. (288J miles). Distance. —Maurice Tabuteau (France), at Buc, on a Maurice Farman biplane, 584-935 kiloms. (365 miles) in 7I1. 48m. 3i$s. Altitude.—A. Hoxsey (U.S.A.), at Los Angeles, on a Wright biplane, 3,497 metres (11,474 ft.). Speed. —A. Leblanc (France), on a Bleriot monoplane, fitted with Gnome motor, 5 kiloms. in 2 mins. 454 sees. = 108 k. p.h. (67-5 m.p.h.). ® ® ® ® Aeronautical Patents Published. Applied for in 1909. Published February 2nd, 1911. 28,602. — MAVROW. Apparatus for aviation. Applied for in 1910. Published January 26th, 1911. 217. W. F- HOWARD. Aerial machines. 515. J. L.GAKSED. Operating planes or wings and rudders of aerial machines BACK NUMBERS OF FLIGHT. ALL back numbers, except those specified below, can still be obtained from the publishers, post free, l\d. each, including descriptions and scale drawings of the Voisin (Nos. 33 and 34), Curtiss (No. 27), Cody (No. 34), Farman (No. 42), and Wright (No. 63) biplanes, the Santos Dumont (Nos. 40 and 41), and Grade (No. 50) monoplanes, and of a full-size Wright glider (Nos. 38 and 39). Numbers raised in price, &c. (Nos. 3 and 4 are entirely out of print):— No. s. d. No. 2. (Table of Propellers) 6. (Wright Bros.' Ele vator Patents) ... 8. (IllustratedGlossary) 10. (Military Aeronau tics) 12. (Souvenir Supple ment) 15. (Engines at Olympia) s. d. 1 6 16. (Prize List and Models at Olympia) 27. (Curtiss Flyer) 31. (B16riot Flyer, full- page drawing) ... 33. (Voisin Biplane) 34. (Cody Flyer) 43. \ (Antoinette Mono 0144. / plane) .. BINDING COVERS, price 2s. 44. per part, post free. TITLE PAGE and INDEX for Vol. II, 2d., post free. VOL. II, bound complete, \os. 6d. Two parts, 15^. Postage extra. Readers' own copies bound, price 4.?. 6d. per part (including cover, title page, and index, postage extra). Prices of special binding on application. ;: i PRINCIPAL CONTENTS. PAGE . 64 <9 Nomenclature in Flight Mr. Ogilvie's Wright Biplane .. Ely's Flight to Warship February Weather Use of Accidents Royal Aero Club Notes British Notes of the Week 71 Progress of Flight About the Country .. • • . • .. .. .. 72 Hon luring Mr. Grahame-White 3 From the British Flying Grounds .. .. .. .. 74 Foreign Aviation Notes .. .. .. .. .. .. .. .. 76 Compasses and Aeroplanes .. .. .. .. .. .. .. .. 78 Speed Alarm Competitions .. .. .. .. .. .. .. .. 79 Advisory Committee on Aeronautics .. .. .. .. .. "79 Correspondence .. .. .. .. .. .. .. .. 80 FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: 1828 Gerrard SUBSCRIPTION RATES. FLIGHT will be forwarded, post free, to any part oj the world at the following rates:— UNITED KINGDOM. ABROAD. s. d. 3 Months, Post Free ... 1 8 3 Months, Post Free 6 „ 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. Should any difficulty be experienced in procuring FLIGHT from local newsvendors, intending' readers can obtain each issue direct trom the Publishing Office, by forwarding remittance as above. 84
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