Flying and Landing in Fog: Science as an Aid to Aerial Navigation Materially Reduces the Risk of Casualty and Irregularity

THE need for providing means which will enable a pilot to fly and land an aeroplane in fog arises from the fact that aeroplanes depend for their sustentation on translational motion. If a satisfactory helicopter were evolved, fog would merely cause inconvenience and delay instead of constituting a grave danger, as it does to conventional types of aeroplanes.