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Aviation History
1910
1910 - 0701.PDF
AUGUST 27, 1910. I/UGHTj CORRESPONDENCE. The name and address of the writer not necessarily for publication) MUST in all cases accompany Utters intended for insertion, or containing queries. Correspondents asking questions relating to articles which they have read in FLIGHT, would much facilitate our work of reference by giving the number of the letter. NOTE.—Owing to the great mass of valuable and interesting corre spondence which we receive, immediate publication is impossible, but each letter will appear practically in sequence and at the earliest possible moment. THE ROYAL AERO CLUB AND FLYING OVER CITIES. [703] With reference to the prizes which are being offered for aeroplane descents in the parks in and near London, the Committee of the Royal Aero Club has already discouraged any attempts of this nature, inasmuch as it does not consider that descents, unless proper precautions are taken, can at present be made without danger to the public in a city so densely populated as London. An offer of a prize of .£1,000 involving luch a risk has recently been refused by the Royal Aero Club. HAROLD E. PERRIN, Secretary Royal Aero Club. THE BOYD ENGINE. [704] In your last issue you were good enough to give a notice re the above. One remark may possibly lead to a misunder standing, viz., to the effect that if the engineers can realise their expectations, the result will be very satisfactory. This suggests that this design is simply a matter of theory, whilst, as a matter of fact, the experiments have been going on for a number of years and numbers of engines have been made. They have been seen running by a number of engineers. It is because of these experiments and their grand results that I claim this engine to be far ahead of any engine in existence. I shall feel obliged if you will kindly insert this to remove a possible misconception. THE INVENTOR. BIPLANE GLIDER. [705] We have just completed a biplane glider, and enclose photographs which we hope will interest the readers of your invaluable paper. The main planes have a spread of 30 ft., and the machine an overall length of 24 ft. ; the total area is 260 sq. ft. The biplane is built entirely of ash, and the interesting part of the machine is the control (see photo.). The rudder is worked by the feet, the elevator by a forward movement of the steering wheel, and the ailerons by means of rotating the wheel. The tail elevator is also adjustable by a special lever ; all the struts, &c, are cut to the correct stream line form, and the whole machine can be taken in half from the middle for purposes of transit, &c. A few preliminary experiments showed that the machine is not only strong, but showed particularly great longitudinal and lateral stability. There are two. or three very good hills in the neighbourhood of Keynsham, which is four miles from Bristol, and as we understand that the Bristol Aero Club have a glider but no ground, it is possible that one of these hills might meet their requirements. Keynsham. ELDON AND GILBERT BUSH. [706] ANOTHER ROTARY ENGINE. Enclosed please find photo of rotary engine built by me for Mr. Fletcher's rotary engine. aeroplane work ; my engine seems to have in its construction and working all the claims of the "Dreadnought," advertised in your paper this week. My engine has mechanical valves, and the exhaust is helped away by holes in the cylinder-walls. The crank-case is cored, to take the gas and air to the cylinders, so it does not mix with the lubricating oil. The valves do not need balancing, as they are closed by springs, and assisted by centrifugal force, and opened by cams. MESSRS. E. AND G. BUSH'S GLIDER.—On the right the control gear is shown in detail. 699
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