sentences:  It was an unequal-span canard configuration two-bay biplane without any vertical stabilising surface or rudder and was originally powered by a 9 hp (7 kW) JAP engine mounted in front of the wing and driving a two-bladed aluminium pusher propeller mounted behind the wings.This proved insufficiently powerful to get the craft airborne.Roe continued work on his aircraft, borrowing a French Antoinette engine of 24 hp (18 kW) to use instead.