M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
Deleted by request of (c)Schiffer Publishing
P.Lewis British Aircraft 1809-1914 (Putnam)
The Seddon Biplane, nicknamed "Mayfly", was a design by Lt. J. W. Seddon, R.N., and A. G. Hackett, built by Accles and Pollock at Oldbury, Worcs., in 1910. A six-seat tandem biplane, it was a fantastic structure of 2,000 ft. of steel tubing arranged as intersecting hoops or geodetics, and was powered by two 65 h.p. N.E.C. engines which drove a pair of Beedle tractor propellers. Frontal biplane elevators conferred longitudinal control, a pair of rudders being mounted between both fore and aft sets of wings.
The machine, at that time the world's largest aeroplane, was tested late in 1910 at the Dunstall Park Wolverhampton, flying-ground of the Midland Aero Club, but was not a success and was broken up without flying. Wing area, 1,000 sq. ft. Weight empty, about 2,600 lb.
Flight, November 19, 1910
FROM THE BRITISH FLYING GROUNDS.
On Monday, the 7th, Mr. Seddon brought out his huge tandem biplane for the first time for a run along the ground. The weight of the machine, however (which is somewhere between 20 and 30 cwts.), proved too much for the axle of the right wheel, which gave way under the load. This machine, which, it will be remembered, is fitted with two N.E.C. engines of 50-60 h.p. each and Beedle propellers, showed good acceleration powers in the short run before the collapse, but a speed sufficient to lift the machine was not attained. The stationary pull of the two propellers is something over 600 lbs. These are not in any way connected together, and both engines have to be run up to a certain speed and kept in unison. The machine in its short run turned considerably from, the straight path, presumably from this reason. It is, however, we believe, Mr. Seddon's intention to connect both engines by a chain.
||M.Goodall, A.Tagg - British Aircraft before the Great War /Schiffer/
|THE SEDDON AEROPLANE. - A most unusual type of aeroplane has made its appearance at Wolverhampton, and is illustrated above. It consists of a tandem biplane, and has been designed by Lieut. J. W. Seddon and Mr. A G. Hackett. Apart from the tandem biplane principle, which has not yet been given any real practical trial, the Seddon machine is also unique in its system of construction, the bracing of the main planes being effected by an arrangement of crossed hoops instead of by the usual system of struts and ties. The constructive work has been carried out by Messrs. Accles and Pollock, at Oldbury, the two engines, which drive Beedle propellers, being supplied by the New Engine Co. The estimated weight of the machine is about one ton, and its supporting surface about 1,000 sq. ft. Beyond the Seddon machine a monoplane is seen.
||Jane's All The World Aircraft 1913 /Jane's/
|SEDDON. (1910). Designed by Lieut. Seddon, R.N.
||Журнал - Flight за 1910 г.
|Side view of the Seddon aeroplane.
||P.Lewis - British Aircraft 1809-1914 /Putnam/
|Seddon tandem biplane with a structure of tubular rings at Wolverhampton in 1910. The machine was too heavy and did not fly.