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Aviation History
1910
1910 - 0104.PDF
I/O CHT I have built an aeroplane which carries 48 sq. ft. of canvas. What size engine should I require ? Also how much lifting power is considered fair per square foot of canvas ? Macclesfield. F. MELVILLE STONE. [We have no knowledge of the Ruth engine, but possibly some ot our correspondents may be able to give the necessary information. The next queries raised by our correspondent are unanswerable unless the weight of the machine is given, and the weight includes the engine. When the weight is known, the area, which has already been fixed, determines the speed of flight on the basis of a certain lifting efficiency per square foot. Dividing the area by the weight will give the lbs. per sq. ft. that must be lifted, and we suggest that our correspondent refers to a table that was published on page 297 of FLIGHT, Vol. I, where there is a good deal of theoretical information relating to lift and velocity.—ED.] FARMAN SCALE MODEL. [343] Replying to Mr. C. G. Jago, birch, No. 56, page 67, if straight-grained and free from all blemish (it should look like silk), when dressed for use, would be a most, perhaps the most suitable wood for such a model; but I think the size named, i.e, fe in., far too small for the long " body spars." In the dimensioned drawing, now before me, of No. 42 of FLIGHT, I see the length is over all 39 ft. ; now, while the four long body spars would not be that length on account of general shape of the body, your model spars would be about 30 in. long, so I would advise these to be Jin. thick by -fy in. deep at the " front" end, tapering1 to barely Jin. square at the extreme back end, and if this is too large, then take off a shaving or two from both sides and top side of bottom spars and bottom sides of top spars, but only to some 5 in. or 7 in. from the back end, leaving the "middles" as they are, and, of course, slightly stiffer. Am sorry I cannot help at present as to propeller, but will look up size of the Farman, and being just now engaged with study of and experiments with some model propellers, may perhaps be able to offer help in that direction later ; at all events, I will try, with Editor's permission. Newport Pagnell. HY. BATH. MODEL MONOPLANE. [344] Could you or one of your readers tell me what the greatest weight of a model monoplane, total area of lifting surfaces ij sq. ft., can be for it to fly ? Also, how much rubber would be necessary to drive it with an 8-in. Cochrane propeller ? Wishing your valuable paper every success. Putney. G. MACKAY. FLYING GROUNDS. [345] Perhaps you or some of your readers could enlighten me as to a good and suitable site for gliding experiments within reasonable distance of town ; or whether such trials could be carried out by attaching the glider to a motor car at a moderate speed on a level road. Russell Square. SUBSCRIBER. Index and Title-Page for Vol. I. THE Index and Title-Page for Vol. I, January to December, 1909, of FLIGHT, has now been published. Any reader may obtain one by sending \\d. to the publishers, 44, St. Martin's Lane, London, W.C. After February 28 th, a charge of 6d. post free will be made. POINTS TO NOTE. Chauviere Propellers. MESSRS. C. GRAHAME-WHITE AND Co., LTD., of 1, Albemarle Street, inform us that they have obtained the exclusive agency for the United Kingdom for Chauviere propellers, and are able to deliver standard designs from stock. The new model Chauviere propeller is made with canvas-covered blades, the canvas being painted and varnished to a high finish to eliminate skin friction. Sample propellers will be shown at the forthcoming Olympia Show. FEBRUARY 5, ttjid. DIARY OF FORTHCOMING EVENTS. Mar. 4-5 .. Mar. II-IQ 1910. Feb. 6-13.. April 2-10 April 3-to April 10-2 = May 10-16 May 14-22 May 20-30 June 5-12 June 5-15 June 18-24 Manchester Ae. C. Model Exhibition. Flight Exhibition at Olympia. British Events. 1910. July n-17 Flight Aug. 6-13 Heliopolis. Biarritz. Cannes. Nice. Berlin. Lyons. Verona. Vichy. Budapest. St. Petersburg Foreign Events. 1 1910. July 14-24 Bournemouth Meeting. Flight Meeting, place not fixed. June 26-July 10 Rheims. Rheims to Brussels, cross country event. July 24-Aug. 10 Belgium. Aug. 25-Sept. 4 Deauville. Sept. 8-18 Bordeaux. Sept. 24-Oct. 3 Milan. Oct. 18-25 America. Gordon-Bennett Balloon Race. Oct. 25-Nov. 2 America. Gordon- Bennett Aeroplane Race. ',639 1,709. 6,038. 6,966 15,637 Aeronautical Patents Published. Applied lor in iqog. Published February 3rd, 1910. F. R. SIMMS. Aerial machines. W. C. JOHNSON. Flying machines. WOLSELEY Co. Driving-gear for aeroplanes. G. A. CROCCO AND O. RICALDONI. Stability of airships, &c. R. ESNAULT-PELTERIE. Aeroplanes. BACK NUMBERS OF "FLIGHT." SEVERAL back numbers are now very scarce, and have been raised in price as follows :— Price. s. d. No. 2, Jan. 3 »» 4 » 6, Feb. io, Mar. 6 15, Apr. 10 16 „ 17 31. J"iy 31 containing Table of Propellers ... ... I 6 ,, ,, Engines 3 o ,, Engines at Paris Salon ... 3 6 „ "How Men Fly" 1 o Aeronautical Bibliography. Wright Bros.' Elevator Patents. ,, Flying Ground at Fambridge 1 o Illustrated Glossary. ,, Human Side of Flying ... 1 O Aero Club Ground at Shellbeach. Military Aeronautics. „ Souvenir Supplement ... I 6 ,, Engines at Olympia ... ... I o ,, Prize List ... ... ... 3 6 Models at Olympia. „ Bleriot Flyer 2 O (Full page drawing.) Other back numbers, post free, \\d. each (including descriptions and scale drawings of the Voisin, Curtiss, Cody and Farman biplanes, the Santos Dumont, Antoinette, and Grade monoplanes, and of a full-size Wright glider. BINDING COVERS for Vol. I, price 2s. 3d., post free. TITLE PAGE and INDEX for Vol. I, i^d., post free. Now ready. Readers' own copies bound, price 4s. per part (in cluding cover, title page, and index, but excluding postage). VOLUME I, bound complete with all the above scarce numbers, price 25J., post free; in two parts, 28*. 6d., complete. Ready shortly. Prices of special binding on application. FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: i828Gerrard. SUBSCRIPTION RATES. FLIGHT mill be forwarded, post /; ee, to any part of the world at the following rates:— UNITED KINGDOM. ABROAD. s. d. 3 Months, Post Free 6 „ ... 1 8 -33 ... 6 6 3 Months, Post Free... 6 , " „ s. d. a 6 5 0 10 0 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. IOO
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