Focke-Wulf F 19a "Ente" Commercial Airplane (German): A Tail-First High-Wing Monoplane (open access)

Focke-Wulf F 19a "Ente" Commercial Airplane (German): A Tail-First High-Wing Monoplane

Circular presenting a description of the Focke-Wulf F 19a "Ente" aircraft, which includes the unique design feature of the horizontal control surfaces being placed at the forward end of the fuselage while the wing is farther aft. Details of the design, aerodynamic characteristics, wings, controls, landing gear, power plant, fuel tanks, characteristics, drawings, and photographs are provided.
Date: January 1931
Creator: unknown
System: The UNT Digital Library
The Hanriot H 431 Military Airplane (French): A General Purpose Biplane (open access)

The Hanriot H 431 Military Airplane (French): A General Purpose Biplane

Circular presenting a description of the Hanriot H 431, which was designed to meet the requirements of the French War Ministry for general purpose airplanes. Details are provided for the design, flying qualities, and improvements over other aircraft designs.
Date: January 1931
Creator: unknown
System: The UNT Digital Library