 The wing design featured a swept leading edge and taper on outboard sections, and wing folds outboard of the twin Merlin 140 engines driving contra-rotating propellers (which allowed shorter blades and the Merlins to be mounted closer to the centreline).The main wheels retracted rearwards into the engine nacelles while the tail wheel retracted forwards into the fuselage.Radiators were mounted in the leading edge between the nacelles and the fuselage.