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)
Cole Tandem Monoplane
The Cole Tandem Monoplane was exhibited at the 1911 Olympia Aero Show by W. Cole and Sons Ltd., 92 High Street. Kensington, W. 14. It was fitted with two mainplanes of equal span set at the same level and separated by a horizontal gap equal to the chord, the pilot's seat being installed between them. It was proposed to fit an engine of 120 h.p. mounted low down, with a chain drive to a longitudinal shaft carrying an airscrew at each end, respectively forward of the front plane and aft of the rear plane. An elevator for longitudinal control was located under the pilot's seat, and a lifting tailplane and single rudder were carried on tail booms. The outer portions of the mainplanes were arranged to fold upwards to reduce storage space. The machine was exhibited at Olympia in an unfinished state and did not fly subsequently.
Flight, March 25, 1911
Wm. Cole and Sons, Ltd. - A new type of biplane with a new engine, the whole constructed entirely by themselves. This machine is exhibited in an unfinished state.
Flight, April 1, 1911.
Third International Aero Exgibition at Olympia - 1911.
THE EXHIBITS ANALYSED.
The necessity for overall length on a machine as a factor in its stability, and the necessity for providing an adequate body in order to carry the tail, certainly suggest the possibility of developing a useful type in the tandem monoplane since it plausibly offers an opportunity to provide twice the lifting surface for the extra weight of a pair of wings. Whether or no the Cole machine will succeed as the modern prototype of this class we should not like to say. In its present form it certainly seems to us to be following an undesirable principle in attempting to combine such unknown quantities as a tandem monoplane, wooden folding wings, twin propellers, and a new type of rotary engine on the same machine.