sentences:  These were replaced by a pair of specially modified 16 ft 6 in three-bladed units.A tall, fixed main undercarriage combined with a small tailwheel gave the aircraft a 22° "nose-high" angle.The disc wing design featured a low aspect ratio that overcame the built-in disadvantages of induced drag created at the wingtips with the large propellers actively cancelling the drag-causing tip vortices.