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Aviation History
1915
1915 - 0086.PDF
t/jJGHT] it broadside on through the air, and you feel the effect at once. Assuming that we had a 12-inch disc vessel with, say, hundreds of tiny pin holes through which the air rushed, then assuming for a moment that such gave some practical efficiency, we have to face the problem of ihe resistance to be overcome in driving such through the air. A 12-inch diameter propeller drives (far more effectually) an equal cylinder of air backwards, and there is compara tively speaking no resistance. C. M. H. 1'EASY.—We do not supply scale drawings, but quite a number of the type you enquire about have appeared in back numbers, both British and American as well. R. LANGLEY. —Of the two sketches you send we should advise the Morane type. The discrepancies in a certain pressure requiring a different number of pump strokes probably arises from the size of the pumps being different; also there may have been leakage in one case. No, we should not advise any form of gear. There is no need to use it in a flying boat if the motor, as well as the propeller, is mounted between the planes. Queries C. M. H. PEASY (164, Emscote Road, Warwick) desires to know the price of some one, two, or four cylinder petrol motors suitable for a model aeroplane. "VICKERS" wishes to know some method of determining the correct distance (back along the body) of the main planes (top stag gered forward) of a small tractor biplane. "I had," he says, " completed the model, and found on trial that it was very much over-elevated, so I have now decided to find the correct position instead of doing it by guesswork." Can any reader help—other wise than by practical trial? ® ® ® ® 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. Paddlng-ton and Districts (77, SWINDKRBY ROAD, WEMBLEY). SATURDAV, FKB. 6TH, resumption of flying, weather permitting. Southwestern Aero Club (373, BRIXTON ROAD, S.W.). FEK. I;;TH. The tractor competition postponed from January 16th, will be held in iirockwell Park. Stony Stratford and District Kite and Model Ae.C. (OLD STRATFORD). FEB. 3RD, monthly meeting. Feb. 20th, monthly competition for r.o gs. twins and singles. Special suspension of Rule No. 18 for this competition. Members please bear in mind No. 17 re protectors. UNAr'FILlA I CD CLUBS. Scottish Ae.S. Model Ae.C. (5, DOUNE QUADRANT, GLASGOW). FEJV. riTli, Maxwell i'aik, tractors, &c. Feb. 20th. Paislev Racecourse. C.A. Model, &c Twickenham an4 District (74, CLIFDEN ROAD, TWICKENHAM). MEETING this week end at Fulwell Park. ® ® ® ® ENEMY PATEN IS RELATING TO AERONAUTICS. THE following list of British patents which have been granted in favour of residents of Germany, Austria, or Hungary, is fur nished in view of the new Patents Acts, which empower the Board of Trade to grant licences under certain conditions to British subjects to manufacture under enemy patents, and is specially compiled for FLIGHT, by Lewis Wm. Goold, Chartered Patent Agent, Enrolled Patent Attorney in the United States, 5, Corporation Street, Birmingham. It is desirable in the first instance to obtain a full copy of the patent specification (price 6a?. each patent), and also the latest particulars upon the Patents Register. If any patent listed has been assigned to a non-enemy proprietor, the law does not apply. No. 8069/12. Aerostats ; cars. The frame of a rigid airship is protected and strengthened by a fabric saddle and end caps, from all of which and from the frame the load is flexibly sus pended so that the weight is evenly distributed. Schutte, J., Germany. Dated November nth, 1911. No. 9958/12. Aerial machines without aerostats ; cars. An aerial machine comprises a projectile shaped body surrounded by a similarly shaped rotary casing upon the surface of which helical propeller blades are fixed. At the rear of the apparatus the blades have extensions which project lo a considerable extent. A plane is mounted over the body and is rigidly connected with the land wheel. The framing and steering surfaces are made of aluminium. Miege, M., Vienna. No. 12061/12. Planes, arrangement and construction of. An aeroplane is provided with an almost or quite flat upper plane and lower plane which is inclined upwards towards the upper plane, the upper and lower planes being directed rearwardly at each side of the machine. The lower plane may be curved in transverse section or plane. One of the planes may project beyond the other, and there maybe an opening in one of them. Bomhard, K., Berlin. JANUARY 29, 1915. No. 12632/12. Aerial machines without aeroslats; planes and the like, arrangement and construction of. A monoplane machine has a supportieg frame arranged to form part of a continuous surface interrupted by the closed body. A keel plane extends centrally beneath and along the whole length of the body. To render the machine portable, the supporting frame may be adapted to fold up about longitudinally- arranged hinges connecting them to fixed inner plane sections. Pippart, H., and Noll, H., Germany. f*> ® ® ® Index and Title Page for Vol. VI. THE S-page Index for Vol. VI of FLIGHT (January to December, 1914) is now ready, and can be had from the publishers, 44, St. Martin's Lane, London, W.C., price 2d. (sjd. pest free). After February 21st the price will be 6d. ® $5 ® ® CORRESPONDENCE. Tractor v. Propeller. [1896] Kindly permit me to comment on " Tractor v. Propeller," by "Fregata," which appeared in FLIGHT dated January 15th. I also have been thinking of this subject for some time past, and have built a small model to illustrate my views. It will be seen from the enclosed photo, that the machine is of the "pusher" type, but also is designed to give large range of Mr. Splcer's aeroplane. speed, together with a large range of vision for the pilot. The fuselage is built in two halves carefully streamlined, which are connected by a stout shaft running through the propeller, which is placed immediately behind the main planes, which are slightly staggered ; the rear half of the fuselage is also braced. By this method an excellent streamline is obtained, and the propeller, therefore, has more effect than on the ordinary " pushers," and, therefore, is still more effective than the tractor. It also combines the advantages of the fast "scout" with the advantages of the " pusher," which in both cases are very great. There are several other points in the construction, but I cannot take up any more room in your valuable paper ; but I thought that since the subject had been opened this account might interest your readers. Wishing your excellent paper success. 31, Colville Gardens, Bayswater. E. D. SPICER. FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: 1828 Gerrard. SUBSCRIPTION RATES. FLIGHT will be forwarded, post free, at the following rates:— UNITED KINGDOM. ABROAD. s. d. s. a. 3 Months, Post Free... 3 9 3 Months, Post Free... 5 c 0 .. ,, ... 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.
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