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Aviation History
1923
1923 - 0128.PDF
MODELS THE JOHNSON MODEL GLIDER FROM the reports of the proceedings of the Society of Model Aeronautical Engineers, which appear in FLIGHT from time to time, readers will have noticed that at some of the Society's meetings, held during the last few months at various places, competitions have been held for model gliders, and that some very successful glides with these models have been obtained. There is every indication that " model gliding " is becoming a very popular section of the Society's activities, and from our own experience of model gliders this in not surprising, for given suitable conditions a considerable amount of information and amusement may be gained from them, not only in evolving an efficient type of glider, but, having obtained the latter, in observing its behaviour under varying conditions and in different air currents. In order to give those of our readers who may be interested in this side of model work an idea as to the form these model gliders take, we propose publishing drawings of some successful types, constructed by members of the S.M.A.E., QMDER "AuBAVTROSS. MARCH 1, 1923 PUBLICATIONS RECEIVED A lit dell' Associazione Italiana di Aerotecnica, 1922. Vol. II, No. 1-2. Associazione Italiana di Aerotecnica, Lungotevere Michelangelo, 10, Rome. Price 10 lire. Transactions of the Institution of Engineers and Shipbuilders in Scotland. February, 1923. Published by the Institution, F.lmbank Crescent, Glasgow. The Face of the Earth as Seen from the Air. By Willis T. Lee, ^ American Geographical Society, Broadway, New York, U.S.A. ' Viestnik Vozdusknovo Flota. No. 1, 1923. 5, Sverskaya- • Yamskaya, Moscow, Russia: Aluminium Facts and Figures. The British Aluminium Co., Ltd., 109, Queen Victoria Street, London, E.C. Price 5s. Department of Overseas Trade. Report of the Economic and Financial Conditions in Mexico, September, 1922. By Norman King. London : H.M. Stationery Office, Kingsway, W.C. Price 9rf. net. By post \0d. Aeronautical Research Committee, Reports and Memoranda :— No. 705 (Ae. 25). Experiments on Complete Models of Six Aeroplanes. By E. F. Relf and E. Ower. October, 1920. Price Is. 9d. net. No. 778 (Ae. 36). An Electric Motor of Small Diameter for Use Inside Aeroplane Models. By E. R. Relf. January, 1922. Price 2d. net. Technical Notes :— No. 121. Further Information on the Laws of Fluid Resistance. By C. Wieselsberger. December, 1922. No. 122. The Determination of the Angles of Attack of Zero Lift and of Zero Moment, based on Munk's Integrals. By Max M. Munk. January-, 1923. M* jM jgr ttr 133 ISS SS J5EJ AERONAUTICAL PATENT SPECIFICATIONS Abbreviations : cyl. •« cylinder ; I.C. «=• internal combustion ; m. — motorI he numbers in brackets ore tboee under wlikli the specification* will be printed and abridged, etc.APPLIED FOR IN 1921 Published March 1, 1923 22,917. INTERNATIONAL ALL-STEEL AIRCRAFT SYNC, LTD., and H. BOLAS.Aircraft. (192,431.) 29,416. H. LEITNER. Metal airscrews. (192,498.)29,950. H. C. PEIRCE. Connecting device for parachutes. (192,512.) 31,103. C. D. BROOKS. Screw propellers. (192,528.)33,340. H. T. W. SMITH. Joints for structural members of aircraft. (192,552.) APPLIED FOR IN 1922 Published March 1, 1923 122. A. and H. O. SHORT, O. T. GNOSSPELIUS and A. GOUGE. Wings andother aerofoils. (192,568.) 26,008. VICKERS, LTD., and O. D .LUCAS. Means for controlling fire ofautomatic guns carried by aircraft. (192,675.) NOTICE TO ADVERTISERS All Advertisement Copy and Blocks must be delivered at the Offices of " FLIGHT," 36, Great Queen Street, Kingsway, W.C. 2, not later than 12 o'clock on Saturday in each week for the following week's issue. and this week we show a monoplane glider built by Mr. B. K. Johnson—the " Albatross." As will be seen, it is of the simplest construction, and we have little to add to what is already told in the illustration, other than that the model is balanced longitudinally by a piece of lead in the nose of the fuselage, and that finer adjustment may be obtained bv sliding the wings back or forward. It will oe noticed that the upper and lower longerons are joined at their forward ends by a piece of whalebone, curved round to meet the two ends. Besides strengthening the fuselage, this acts as a good shock absorber. , - The principal characteristics of this glider are :— ' : Weight .. .. .. ... 10 ozs. 7 . Area of main plane .. .. 276 sq. ins. Area of tail plane .. .. .. 115 sq. ins. Area of fin . . .. ... \.. 25 3q. ins. Lading per sq. ft. • ». ' '.. 5J ozs. ;._ Weight of lead .. .. .. 3 <">zs Best duration (officially timed) . . 35^ seconds Best duration (unofficially timed) 40 seconds. Stability, extremely good. " . *I: * * * * •-,...'J. Y. V^;-Aviation in Switzerland DURING 1922 Swiss military aviators made 19,923 flights, covering 414,063 miles in 5,620 hours' flying time. The only casualties were one child killed by a landing machine, two pilots injured, and four machines damaged. If you require anything pertaining to aviation, study "FLIGHT'S" Buyers' Guide and Trade Directory, which appears in our advertisement pages each week (see pages iii and xiv). FLIGHT The Aircraft Engineer and Airships 36, GREAT QUEEN STREET, KINGSWAY, W.C. 2. Telegraphic address : Truditur, Westcent, London. Telephone : Gerrard 1828. SUBSCRIPTION RATES " FLIGHT " will be forwarded, post free, at the following rates :— UNITED KINGDOM ABROAD* •I s. d. \ s. d. 3 Months, Post Free... 773 Months, Post Free... 8 3 6 „ ,, ...15 2,6 ,, ,, ...16 6 12 „ „ ...30 4 12 „ „ ...33 o ThSse rates are subject to any alteration found necessary under abnormal conditions and to increases in postage rates. * European subscriptions must be remitted in British currency * Cheques and Post Office Orders should be made payable to the Proprietors of " FLIGHT," 36, Great Queen Street, Kingsway, W.C. 2, and crossed London County and Westminster Bank, otherwise no responsibility will be accepted. Should any difficulty be experienced in procurivg " FLIGHT " from local newivendors. intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance as, above. 128
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