SIMPLIFIED FLYING: Another interesting American result of Mr. Vidal's compaign for simpler aeroplanes - the Campbell and the all-metal pusher monoplane which, with a Ford V8 engine, has a cruising speed of 100 m.p.h. As in the case of the Weick and the Hammond, the machine has a three-wheeled undercarriage, and that there is a very good field of view in the "two place" cabin can be gathered from this Shell Aviation photograph. Note the radiator intake.