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Aviation History
1909
1909 - 0528.PDF
AUGUST 28, 1909. CORRESPONDENCE. *»* The name and address of the writer (not necessarily for Publication) MUST in all cases accompany letters intended fot insertion, or containing queries. THE HOWARLWINDHAM MONOPLANE. To the Editor of FLIGHT. SIR,—I am enclosing a photo of the Howard-Windham mono- plane which I have been working on for some time past at Wembley Park. Although the photo is not a good one, it clearly shows the general outlines of the machine, with the propeller, which is one off Capt- Windham's biplane. This machine is now fitted with a new 6-cyl. Dutheil-Chalmers engine and we hope to try it within a week or two. Since it was shown at the Olympia, it has had several new patents put on and we expect great things from it. Yours faithfully, C. GURNEY GRIME. BRITISH OR GERMAN—A DELICATE DIS-TINCTION. To the Editor of FLIGHT. SIR,—Could you be kind enough to inform me on the following matter through your valuable paper FLIGHT. I am the mechanic to a member of the Aero Club, and am building an aeroplane on original lines, with which we wish to compete for the Daily Mail prize. We have got the machine well on towards completion, and we are now negotiating with a firm to build us the engine. The head of the firm is a German, I have discovered, but his workmen are English, and the engine will be made in London. I should like to know if that would effect us in any way for competing for the prizes. If you will be kind enough to let me know I shall consider it a great favour. Wishing your paper every success, Yours respectfully,W. J. Y. [The decision in this maiter would, no doubt, rest with the pro- prietors of the Daily Mail and the definition placed by the Aero Club Committee upon the term " British built."—ED.] PROPELLER DATA FOR NOVICES. To the Editor of FLIGHT. SIR,—I think it would be most interesting to aeroplane builders if the authors of text-books and articles on aerial propeller design would give the actual data they obtain from their experimental propellers. Their theories are very interesting and instructive, but after all I think they are rather vague. It would be of real value to laymen if they would give the diameter, pitch, thrust, speed, &c, of the propellers from which they obtain their information. I have seen a number of propellers exhibited and on sale, but could never obtain any information as to the actual thrust they gave. With regard to the Watford Engineering Co. 's suggestion, I shall be very glad to run my 5 ft. 6 in. propeller against any other of similar diameter, but I cannot go to the expense of a motor 10 drive it at a suitable speed. It would be more satisfactory if all the different propellers were tested on the same motor at different speeds, and I would suggest that some firm of manufacturers of aeroplane engines might connect a flexible shaft to, say, one of their 30-h.p. motors, and put a speed indicator and dynamometer on the shaft and run the propellers at different speeds. Yours faithfully, WILLIAM CO.CHRANE. . THE SCOTTISH AERONAUTICAL SOCIETY. To the Editor of FLIGHT. SIR,—Having been a reader of your paper almost since its incep- tion, I take this opportunity of complimenting yourselves, together with other contemporary publications, for the important work you are doing in the initial stage of this science. You have, no doubt, at times felt as if your efforts might not be producing all the effect desired, but you may be wholly unaware of many, like myself, who find much useful work in your pages, and although not over ready to express our feelings of approval, yet are highly appreciative. This leads me to say that here in Glasgow we have many interested in aviation. True, we have not as yet demon- strated our powers in actual flight, but we have started along the right road to ultimately accomplish that end. A society has now been formed, to be known as the Scottish Aero- nautical Society, with a present membership of forty, which is being continually added to, our object being to collect data and statistics of what has already been done, to confer with and assist one another, and to carry out, by our combined efforts, experiments which the individual may find impossible, to arrange kite and model demonstrations, and generally to foster an interest in this science in Scotland. We do not as yet claim to have produced anything startling, but with the energy and engineering ability available in our midst, I feel confident that, in due course, Scotland will not be behindhand. If you have any readers in this part of the country who are not as yet in touch with this Society, I will be pleased to communicate with them. We would also be pleased to accept and read before our Society any paper on aeronautics which any of your readers would be disposed to lend, while any recommendation you could make as to the possibility of obtaining good lantern slides showing any of the proved flyers would be highly appreciated. Yours faithfully, WALTER G. DUNCAN, Secretary, pro. tern., ; — The Scottish Aeronautical Society. 185, Hope Street, Glasgow. 16,606. 19,805. 9J6IO. 16,068. -Aeronautical Patents Published. ;. , : Applied for in 1008. • ' Published August 26th, 1909. . .. W. FRIESE-GREENE. Air-cars or air-ships. " E. H. HARE. Aeroplanes. ;.;—• —. -O '..••.......-•;•• Applied for In 1009. .. PubliskedAugust 26th, 1909. ;.,; " - J. MEANS. Apparatus for launching flying machines. O. AND W. WRIGHT. Mechanism for actuating the rudders or con- trolling planes of aeronautical machines. BACK NUMBERS OF "FLIGHT." THE publishers have pleasure in announcing that they have secured a few of the back issues of FLIGHT, and any of our new readers who may wish to complete their sets may obtain the first thirty-four numbers for 4s. 3d. (abroad 6s. 6d.) post free, from the Publishers, 44, St. Martin's Lane, W.C. 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 of the world at the following rates: — UNITED KINGDOM. ABROAD. s. 3 Months, Post Free ... 1 6 ,, ,, ... 3 12 „ „ ... 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 from the Publishing Office, by forwarding remittance as above. I8 3 6 3 6 12 Months, ,, 1 • Post Free... 1 • * * • s. 2 5 10 d.6 0 0 S3O
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