The Hafner A.R. III Gyroplane (British) (open access)

The Hafner A.R. III Gyroplane (British)

Circular describing the Hafner A.R.III gyroplane, which is a single-seater with a Pobjoy Niagara III engine. Details of the rotor blades, controls, rotor, and climbing properties are provided.
Date: April 1937
Creator: unknown
System: The UNT Digital Library