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Blériot Combat Monoplane 127 (French)
The 127 is a cantilever monoplane without external bracing. It is designed to accompany and protect bombardment and observation aircraft. Descriptions of the airfoil, fuselage, power plant, landing gears, and armament are provided.
Date:
November 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Constructional Design of Metal Flying-Boat Hulls: Part 1 & Workshop Notes on the Building of Metal Hulls: Part 2
Part I of this paper covers the constructional design of metal flying-boat hulls and does not elaborate any further. Part II deals with the actual construction process of the hull.
Date:
November 1928
Creator:
Langley, M.
Object Type:
Report
System:
The UNT Digital Library
Determination of the Air Forces and Moments Produced by the Ailerons of an Airplane
As a rule, the actual lift distribution at the wing tips shows deviations from the theoretical distribution, so that an approximate evaluation of the distribution may be regarded as satisfactory. After a few brief remarks on the fundamentals of the exact computation, the method will be so presented that the lift distribution for deflected ailerons may be determined for other values of the parameter p from the results already obtained. Coefficients will then be given in the form of diagrams and numerical tables, from which the desired forces and moments can be easily obtained by substitution in the given equations.
Date:
November 1928
Creator:
Wieselberger, C. & Asano, T.
Object Type:
Report
System:
The UNT Digital Library
Drag and Cooling With Various Forms of Cowling for a Whirlwind Engine in a Cabin Fuselage
An investigation on the cowling of radial air-cooled engines was conducted in the 20-foot Propeller Research Tunnel at Langley Field. Cooling and drag tests were made with each form of cowling. The propulsive efficiency was found to be practically the same with all forms of cowling.
Date:
November 1928
Creator:
Weick, Fred E.
Object Type:
Report
System:
The UNT Digital Library
The Gloster "Goldfinch" (British): Single-Seat Fighter
The Goldfinch is equipped with the Bristol Jupiter Mark Vii engine. It is the all metal version of the Gloster Gamecock used by the R.A.F. A description of the construction, components, flying qualities, characteristics, drawings, and photographs are provided.
Date:
November 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
On the Take-Off of Heavily Loaded Airplanes
This report examines the take-off conditions of airplanes equipped with tractive propellers, and particularly the more difficult take-off of airplanes heavily loaded per unit of wing area (wing loading) or per unit of engine power (power loading).
Date:
November 1928
Creator:
Breguet, Louis
Object Type:
Report
System:
The UNT Digital Library
The Variation in Pressures in the Cockpit Fan Airplane in Flight
"The results of an investigation to determine the pressures in the open cockpit of a Vought VE-7 airplane are given. The information has been considered valuable on account of its possible effect upon the operation of instruments, particularly altimeters, due to a variation from the true static pressure which is induced by the passage of the airplane through the air. The observed values are small and the effect upon instruments is inconsiderable" (p. 1).
Date:
November 1928
Creator:
Carroll, Thomas & McAvoy, William H.
Object Type:
Report
System:
The UNT Digital Library
"Villiers 24" Slotted-Wing Airplane (French): Night Pursuit Sesquiplane
The Villiers 24 C.A.N. 2 is a night pursuit sesquiplane equipped with the 450 HP direct-drive Lorraine 12 Eb engine. It is characterized by Handley Page slotted wings. Details of the construction, wings, flaps, controls, characteristics, performances, drawings, and photographs are provided.
Date:
November 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness
In the foregoing remarks I have made an attempt to touch on some of the structural problems met with in cantilever wings, and dealt rather fully with a certain type of single-spar construction. The experimental test wing was a first attempt to demonstrate the principles of this departure from orthodox methods. The result was a wing both torsionally stiff and of light weight - lighter than a corresponding biplane construction.
Date:
November 1929
Creator:
Stieger, H. J.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Fuel Consumption on Cylinder Temperatures and Performance of a Cowled Wright J-5 Engine
Given here are the results of tests made to determine the effect of fuel consumption on the cylinder temperatures and the performance of a cowled Wright J-5 engine. The results of these tests indicate that enriching the mixture by increasing the carburetor size results in a reduction in cylinder head and barrel temperatures. The cylinders shielded by the magnetos or the points on the cylinder that do not receive a free flow of cooling air increase most rapidly in temperature as the mixture is leaned.
Date:
November 1929
Creator:
Schey, Oscar W.
Object Type:
Report
System:
The UNT Digital Library
Mathematical and Experimental Investigation of Heat Control and Power Increase in Air-Cooled Aircraft Engines
In order to understand the numerical relations between the air velocity, temperature of the cylinder walls, heat dissipation, cylinder dimensions and type of construction an experimental plant was installed in the Siemens and Halske laboratory. The experimental cylinder was exposed to the air stream of a wind tunnel. The compression chamber was heated by an electrically heated oil bath kept constantly in motion by a stirrer. The wall temperatures were measured by thermocouples.
Date:
November 1929
Creator:
Gosslau, F.
Object Type:
Report
System:
The UNT Digital Library
Revision of the American Chipmunks: (Genera Tamias and Eutamias)
Brief summary of the geographic distribution, life history, and subgenera of genera Tamias and Eutamias.
Date:
November 1929
Creator:
Howell, Arthur H.
Object Type:
Report
System:
The UNT Digital Library
The Saunders "Cutty Sark" Commercial Seaplane (British): A High-Wing Monoplane Flying Boat
Circular describing the Saunders Cutty Sark commercial seaplane, which is a high-wing monoplane flying boat. Details regarding the power unit, engines, fuel system, components, characteristics, drawings, and photographs are provided.
Date:
November 1929
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Some Studies on the Aerodynamic Effect of the Gap Between Airplane Wings and Fuselages
"The general result indicated by this study is that if desirable from any viewpoint the gap between wing and fuselage may be closed without detrimental aerodynamic effects, and with a given monoplane there is less drag if the wing is directly on top of the fuselage than if it is parasol" (p. 1).
Date:
November 1929
Creator:
Ober, Shatswell
Object Type:
Report
System:
The UNT Digital Library
Technical Details in the Structural Development of Rohrbach Seaplanes
"The recent trial flights and acceptance tests of the Rohrbach "Romar," the largest seaplane in the world, have yielded results fully confirming the principles followed in its development. Its take-off weight of 19,000 kg, its beating the world record for raising the greatest useful load to 2000 m by almost 2500 kg and its remarkable showing in the seaworthiness tests are the results of intelligent researches, the guiding principles of which are briefly set forth in this article" (p. 1).
Date:
November 1929
Creator:
Mathias, Gotthold & Holzapfel, Adolf
Object Type:
Report
System:
The UNT Digital Library
Unsymmetrical Forces in an Airplane Cell
This paper calls attention to the desirability of expanding airplane building regulations to include proof of safety for cases of unsymmetrical loading, at least in the structural members which are thereby specially stressed. The flight cases involve increases of the customary load assumptions through rudder deflection and aileron deflection.
Date:
November 1929
Creator:
Vogt, R.
Object Type:
Report
System:
The UNT Digital Library
The Design of Plywood Webs for Airplane Wing Beams
This report deals with the design of plywood webs for wooden box beams to obtain maximum strength per unit weight. A method of arriving at the most efficient and economical web thickness, and hence the most suitable unit shear stress, is presented and working stresses in shear for various types of webs and species of plywood are given. The questions of diaphragm spacing and required glue area between the webs and flange are also discussed.
Date:
November 27, 1929
Creator:
Trayer, George W.
Object Type:
Report
System:
The UNT Digital Library
Accelerated Laboratory Test for Determination of Slacking Characteristics of Coal
Report issued by the U.S. Bureau of Mines on laboratory testing developed to measure the slacking of coals. Testing methods and results are presented. This report includes tables and graphs.
Date:
November 1930
Creator:
Fieldner, Arno Carl; Selvig, W. A. & Frederic, W. H.
Object Type:
Report
System:
The UNT Digital Library
Bending Tests of Metal Monocoque Fuselage Construction
Study of the bending stress in smooth skin, aluminum alloy, true monocoque fuselage sections of varying ratio of diameter to thickness.
Date:
November 1930
Creator:
Mossman, Ralph W. & Robinson, Russell G.
Object Type:
Report
System:
The UNT Digital Library
Effect of the Angular Position of the Section of a Ring Cowling on the High Speed of an XF7C-1 Airplane
The tests herein reported were conducted by the NACA to determine the effect of the angular position of the section of a ring cowling on the speed of an airplane having a radial air-cooled engine.
Date:
November 1930
Creator:
Gough, Melvin N.
Object Type:
Report
System:
The UNT Digital Library
An investigation of the phenomenon of separation in the air flow around simple quadric cylinders
The tests, conducted at the Guggenheim Aeronautical Laboratory of Stanford University, to investigate the phenomenon of separation in the air flow past geometric shapes are described in this report.
Date:
November 1930
Creator:
Parsons, John F. & Wallen, Jarvis A.
Object Type:
Report
System:
The UNT Digital Library
Mathematical treatise on the recovery from a flat spin
In this mathematical investigation, made in collaboration with Dr. Wilhelm Schmidt, we interpret the temporary change (due to some disturbance) in the quantities which define the position of the airplane while in a flat spin. We further examine the effect of this change, of the means resorted to to produce the disturbance, and thus reveal the expedients available for recovering from a flat spin.
Date:
November 1930
Creator:
Fuchs, R.
Object Type:
Report
System:
The UNT Digital Library
Metal Covering of Airplanes
This paper presents a relative determination of the wrinkling of a plate wall beam with variable number of supports and methods of attachment. The discussion is based entirely on tests with extensometer readings and number of wrinkles, with complete web and with cutout sections. The author notes that the number of corrugations increase with added stress, keeping constant edge spacing.
Date:
November 1930
Creator:
Mathar, J.
Object Type:
Report
System:
The UNT Digital Library
Practical Tests With The "Auto Control Slot" Part 1: Lecture
"The effect of a slotted wing depends essentially on the fact that a secondary flow branches off from the main flow and passes to the suction side of the profile. It is thus possible to delay the separation greatly and increase the lift. The practical aspect of the slotted wing is less known in Germany, especially the results obtained during the last three years since the introduction of the 'auto control slot'" (p. 1).
Date:
November 1930
Creator:
Lachmann, G.
Object Type:
Report
System:
The UNT Digital Library