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The Blackburn "Bluebird": Two-Seat Training and Sport Airplane

Description: The Bluebird is a two seat, side by side biplane, designed primarily for training and pleasure flying. A description of the construction and flight characteristics is provided.
Date: June 1927
Partner: UNT Libraries Government Documents Department
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Effects of Streamline Curvature on Lift of Biplanes

Description: This report concerns, first, the determination of the lift of a wing which is situated in a curvilinear flow; and second, to calculate the curvature which one wing of a biplane produces in the vicinity of the other.
Date: June 1927
Creator: Prandtl, L.
Partner: UNT Libraries Government Documents Department
open access

The Focke-Wulf "G.L. 18" : Twin-Engine 150 HP. Commercial Airplane

Description: A small commercial airplane, the Focke-Wulf G.L. 18 has two engines (75 HP. Junker). It is a monoplane and the engines are wing mounted. Details of the engines, power, wings, ailerons, fuselage, empennage, landing gear, characteristics, drawings, and photographs are provided.
Date: June 1927
Creator: Serryer, J.
Partner: UNT Libraries Government Documents Department
open access

Junkers Airplane "G 24": All-Metal Commercial Airplane

Description: The G 24 is a commercial airplane with three engines and a monoplane wing. It is known for its all metal construction and stabilizers.
Date: June 1927
Partner: UNT Libraries Government Documents Department
open access

Climbing Efficiency of Aircraft

Description: The object of this report was to indicate that we frequently only make use of 50 percent of the maximum brake horsepower of the engine in taking off the ground, that this loss is not inevitable, and that the effort to get engines of low weight per horsepower by boosting revolutions is of very little use to bombers and commercial airplanes.
Date: June 1927
Creator: Walker, C. C.
Partner: UNT Libraries Government Documents Department
open access

Drag measurements of two thin wing sections at different index values

Description: It is stated that the index value 6000, as found in normal tests of wing sections with a 20 cm chord, falls in the same region where the transition of laminar to turbulent flow takes place on thin flat plates. It is to be expected that slightly cambered, thin wing sections will behave similarly. The following test of two such wing sections were made for the purpose of verifying this supposition.
Date: June 1927
Creator: Ackeret, J.
Partner: UNT Libraries Government Documents Department
open access

Investigation of a Wing With an Auxiliary Upper Part

Description: This report presents experiments in which two parts of the wing were arranged so as to form a biplane, which was subjected to normal three-component measurements, the two parts being placed in various relative positions with respect to the gap a and the stagger b.
Date: June 1927
Creator: Seiferth, R.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic laboratory at Cuatro Vientos

Description: This report presents a description of the design of the Cuatro Vientes wind tunnel.
Date: June 1927
Creator: Caracciolo, Moreno
Partner: UNT Libraries Government Documents Department
open access

The Gaseous Explosive Reaction: The Effect of Inert Gases

Description: "Attention is called in this report to previous investigations of gaseous explosive reactions carried out under constant volume conditions, where the effect of inert gases on the thermodynamic equilibrium was determined. The advantage of constant pressure methods over those of constant volume as applied to studies of the gaseous explosive reaction is pointed out and the possibility of realizing for this purpose a constant pressure bomb mentioned" (p. 479).
Date: June 24, 1927
Creator: Stevens, F. W.
Partner: UNT Libraries Government Documents Department
open access

The effects of fuel and cylinder gas densities on the characteristics of fuel sprays for oil engines

Description: "This investigation was conducted as a part of a general research on fuel-injection engines for aircraft. The purpose of the investigation was to determine the effects of fuel and cylinder gas densities with several characteristics of fuel sprays for oil engines. The start, growth, and cut-off of single fuel sprays produced by automatic injection valves were recorded on photographic film by means of special high-speed motion-picture apparatus" (p. 491).
Date: June 14, 1927
Creator: Joachim, W. F. & Beardsley, Edward G.
Partner: UNT Libraries Government Documents Department
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