The Avro "Avian" Airplane : 65 HP. Armstrong-Siddeley "Genet" engine
An NACA aircraft circular from 1926 documenting the Avro Avian biplane with its 65 HP Armstrong-Siddeley Genet engine, issued by the National Advisory Committee for Aeronautics for engineers and aviation researchers. Its pages are technical drawings: orthographic plan, side and front views with dimensioned call-outs, and numbered detail sketches of struts, fittings and cockpit parts, drawn in clean black line with minimal shading, useful for schematic diagram layouts and technical callout styling.
