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open access

The Avro 627 "Mailplane" (English): A Single-Seat Biplane

Description: Circular describing the Avro 627 Hailplane, which is a single-seat biplane designed for delivering air mail. Details regarding the fuselage, wings, tail, landing gear, power installation, characteristics, performance, drawings, and photographs are provided.
Date: August 1931
open access

The Boeing Mail Airplane

Description: The Boeing Mail Airplane is a biplane with cloth covered wings of wood and wire construction, a top speed of 130 MPH, and a fuel capacity of 100 gallons in two tanks.
Date: August 1927
open access

Breguet 390 T Commercial Airplane (French): A Ten-Seat All-Steel Sesquiplane

Description: Circular presenting a description of the Breguet 390 T, which is a three-engine all-metal transport sesquiplane with the same structural principles as the Breguet military airplane. This aircraft design replaces a girder fuselage with an orthodox rectangular fuselage with accommodations for ten passengers and baggage. Details of the design, components, flying qualities, drawings, and photographs are provided.
Date: August 1931
open access

Farman Monoplane F.170: Commercial Airplane with One 500 HP. Farman Engine

Description: The F.170's engine has won world endurance tests in 1924 and in 1925. It has a semi-thick wing, rigidly braced by oblique struts. This wing is embedded in the top of the fuselage and measures 16.1 by 3.6 meters. The F.170 has a passenger compartment seating eight.
Date: August 1926
Creator: Serryer, J.
open access

Heinkel Airplane H.D. 39 for Carrying Newspapers

Description: Circular presenting a description of the Heinkel Airplane H.D. 39, which is a postal airplane that can be used to carry newspapers. Details regarding the design, controls, equipment arrangement, fuel, and flying characteristics are provided.
Date: August 1926
open access

Junkers Commercial Airplane G 31

Description: The three engine Junkers commercial Airplane, type G 31 is a further development of the earlier G 24. It is an all metal low wing monoplane with a total engine output of 1100-1200 HP.
Date: August 1927
open access

The "K 47" of the A.B. Flygindustri: An Armored Pursuit Monoplane

Description: Circular presenting a description of the K 47 airplane, which is a two-seat aircraft created by the A.B. Flygindustri in Sweden. A description of the construction, design, interior, performance, visibility, wings, fuselage, controls, landing gear, engines, weapons, characteristics, drawings, and photographs are provided.
Date: August 1929
Creator: Schulz, R.
open access

"Levasseur 8" Transatlantic Airplane

Description: Circular describing the Levasseur 8, which is an adaptation of a naval airplane adopted by the French Navy. Details of the wings, fuselage, landing gear, fuel, engine, and flying qualities are provided.
Date: August 1927
open access

Savoia Marchetti "S 64" Airplane

Description: The S 64 is a large monoplane with an aspect ratio of 7. It has a cantilever wing made of a single piece, entirely of wood. The wing has three spars with a covering of plywood. The engine is mounted high over the wing's center. It was designed for long distance transatlantic flights.
Date: August 1928
Creator: Victor, Maurice
open access

The Sikorsky Twin Engined Amphibian, Type S-38, Model 1928

Description: The S-38, model 28 is a nine passenger Sesquiplane powered by two Pratt and Whitney Wasp 410 HP engines and is intended for routes where the ability to take off and land from both land and water is essential. A description of the weight, construction, power plant, fuel system, landing gear, hull and floats, dimensions, flight characteristics, blueprints, and photographs are provided.
Date: August 1928
open access

Spartan "Cruiser" Commercial Airplane (British): A Six-Seat Low-Wing Cantilever Monoplane

Description: Circular describing the Spartan "Cruiser", which is a six-seat low-wing cantilever commercial monoplane with three engines. Details of the construction, fuselage, wing, tail unit, power plant, fuel system, lubrication system, landing gear, controls, cabin arrangement, characteristics, performance, drawings, and photographs are provided.
Date: August 1932
open access

The Westland "Widgeon III": "Cirrus II or "Genet II" Engine

Description: The Widgeon III is a parasol type monoplane. One of its strongest features was the high degree of visibility available to the pilot. A description of the design, construction, flight characteristics, blueprints, and photographs are provided.
Date: August 1927
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