The Hafner gyroplane, which lifts itself by "autorotative" vanes, though having many points in common with the Cierva autogyre embodies new methods of control, enabling a vertical ascent to be made without for ward run and giving ils pilot better control all round. It has made several successful tial ights and now being developed at an aerodrome near London. Tt has a Pobloy Niagara 90 lip. engine and is said to be able to climb 1,200 ft, a minute and to cruise at 110 mph.
Text read from the printed page and cleaned; old type leaves the occasional error.