The aircraft had wing warping along with a fixed tailplane and, at the extreme end, a cruciform, all-moving, non-lifting Santos Dumont type empennage mounted on a universal joint. Blackburn dispensed with the feet for controlling direction and fitted his patent 'triple steering column' consisting of a single car-type steering wheel which turned to operate the all moving tail as a rudder, moved up and down when it functioned as an elevator and from side to side when warping the wings.
Des.