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Fiat C.R. 20 Pursuit Airplane

Description: The Fiat C.R. 20 has an all metal frame covered with fireproof fabric, except for the area near the engines, which is covered in duraluminum. It is armed with 4 machine guns and is capable of 280 KPH.
Date: May 1927
Partner: UNT Libraries Government Documents Department
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The Mureaux "Brunet 3C2" Pursuit Airplane

Description: Designed by Engineer Brunet, the 3C2 is an all metal monoplane with two engines and provision for six machine guns and 12 10 Kg. bombs. A description of the design, components, characteristics, flying qualities, drawings, and photographs are provided.
Date: May 1927
Creator: Serryer, J.
Partner: UNT Libraries Government Documents Department
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Meteore 63 Commercial Seaplane

Description: Societe Provencale de Constructions Aeronautiques, builder of the "Meteore 63" has constructed a three engine (biplane) seaplane which has met conditions for a seaworthy certificate of the first class. A description of the design, hull, tail, power plant, characteristics, performances, drawings, and photographs are provided.
Date: May 1927
Partner: UNT Libraries Government Documents Department
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Training Airplane "Avia B.H. 11."

Description: Circular presenting a description of the Avia B.H. 11, which is a two-seat, low-wing monoplane with a plywood fuselage. The report describes the structural details and flight performance and provides blueprints and photographs of the aircraft.
Date: May 1927
Partner: UNT Libraries Government Documents Department
open access

Determining the Velocity Distribution in the Boundary Layer of an Airfoil Fitted With a Rotary Cylinder

Description: In the closer investigation of the results obtained from a wing model with a rotary cylinder mounted in its leading edge (NACA TM's 307 and 354), the velocity distribution in the vicinity of the surface of the model was determined by a hot-wire anemometer. The results confirmed the belief that the rotary cylinder had considerable effect on the air flow, but demonstrated the fact that the direct influence of the cylinder is confined to a very thin layer in immediate proximity to the surface.
Date: May 1927
Creator: Van der Hegge Zijnen, B. G.
Partner: UNT Libraries Government Documents Department
open access

High-Speed Oil Engines for Vehicles Part 3

Description: Ignition-chamber engines and their fuel injection systems are investigated. Specific details are provided for fuel-injection nozzles and fuel pumps are provided.
Date: May 1927
Creator: Hausfelder, Ludwig
Partner: UNT Libraries Government Documents Department
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Multiplicity of Solutions in Aerodynamics

Description: "One of the most striking phenomena which accompany the flow of fluids such as air and water about bodies, is that of changes in character. This phenomena is still very little understood. We will first discuss the nature of these changes and then show that pure theory leads to a multiplicity of characters of flow, among which we will endeavor to indicate those bearing some analogy to experimental results" (p. 1).
Date: May 1927
Creator: Dupont, M.
Partner: UNT Libraries Government Documents Department
open access

The N.A.C.A. photographic apparatus for studying fuel sprays from oil engine injection valves and test results from several researches

Description: "Apparatus for recording photographically the start, growth, and cut-off of oil sprays from injection valves has been developed at the Langley Memorial Aeronautical Laboratory. The apparatus consists of a high-tension transformer by means of which a bank of condensers is charged to a high voltage. The controlled discharge of these condensers in sequence, at a rate of several thousand per second, produces electric sparks of sufficient intensity to illuminate the moving spray for photographing. T… more
Date: May 25, 1927
Creator: Beardsley, Edward G.
Partner: UNT Libraries Government Documents Department
open access

Lift, drag, and elevator hinge moments of Handley Page control surfaces

Description: "This report combines the wind tunnel results of tests on four control surface models made in the two wind tunnels of the Navy Aerodynamic Laboratory, Washington Navy Yard, during the years of 1922 and 1924, and submitted for publication to the National Advisory Committee for Aeronautics May 7, 1927. The purpose of the tests was to compare, first, the lifts and the aerodynamic efficiencies of the control surfaces from which their relative effectiveness as tail planes could be determined; then t… more
Date: May 7, 1927
Creator: Smith, R. H.
Partner: UNT Libraries Government Documents Department
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