GRAHAME-WHITE pusher type biplanes from 1912 leading to Type XV

  In 1912-1913, a Boxkite with twin rudders, the bi-rudder 'bus, still with front elevator and exposed crew was used extensively at Hendon. On 27 November 1913, flown by Marcus D. Manton, it was used to demonstrate the use of a Lewis machine gun for firing at ground targets at Bisley. A similar machine to this, RNAS No. 1600, was supplied to the Admiralty early in 1915. This became the prototype for further batches, supplied in wartime to the RNAS and later to the RFC, to a total of 135 aircraft.
  The early deliveries were fitted with a front elevator, which was discarded at some stage, and a nacelle for pilot and passenger, with full dual controls, was fitted. The top wings could be fitted with extensions, and the ailerons were fitted with balance cables. A variety of engines was fitted, including the 60hp Le Rhone, the 70 and 80hp Gnome air-cooled rotaries and the 60hp Green water-cooled type.
  Despite the considerable differences between the early and later types, still being delivered in 1917, these aircraft were generally known as the Type XV.