Canton et Unne

   Before they joined Emile Salmson, Canton and Unne designed and built their famous water-cooled radial engine, and 3 aeroplanes as well, all of the push-pull design. Their first machine was a triplane in tandem; to solve the problem of the gyroscopic effects of a single propeller, they used 2 counter-rotating propellers; but in order to avoid the dramatic possibilities of failure when the 2 propellers turned in the same plane, they mounted theirs at either end of the long rectangular fuselage. Their new 5-cylinder water-cooled radial was mounted flat inside the fuselage to drive 2 long shafts through a counter-gear. The machine was tested in 1909.

   A third push-pull was similar to the second, but with a streamlined fuselage, and the propeller aft of the tail unit.