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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Year: 1929
The A.B.C. "Robin" (British) : a single-seat cabin monoplane

The A.B.C. "Robin" (British) : a single-seat cabin monoplane

Date: September 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The A. B. Flygindustri "K 37" (Swedish Junkers) : A Low-Wing All-Metal Military Airplane

The A. B. Flygindustri "K 37" (Swedish Junkers) : A Low-Wing All-Metal Military Airplane

Date: October 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic theory and tests of strut forms. Part II

Aerodynamic theory and tests of strut forms. Part II

Date: May 1929
Creator: Smith, R H
Description: This report presents the second of two studies under the same title. In this part five theoretical struts are developed from distributed sources and sinks and constructed for pressure and resistance tests in a wind tunnel. The surface pressures for symmetrical inviscid flow are computed for each strut from theory and compared with those found by experiment. The theoretical and experimental pressures are found to agree quantitatively near the bow, only qualitatively over the suction range, the experimental suctions being uniformly a little low, and not at all near the stern. This study is the strut sequel to Fuhrmann's research on airship forms, the one being a study in two dimensions, the other in three. A comparison of results indicates that the agreement between theory and experiment is somewhat better for bodies of revolution than for cylinders when both are shaped for slight resistance. The consistent deficiency of the experimental suctions which is found in the case of struts was not found in the case of airships, for which the experimental suctions were sometimes above sometimes below their theoretical values.
Contributing Partner: UNT Libraries Government Documents Department
Aeromechanical experimentation (wind tunnel tests)

Aeromechanical experimentation (wind tunnel tests)

Date: April 1929
Creator: Katzmayr, R
Description: The following report endeavors to show that aeromechanical experimentation has become an important aid to theory.
Contributing Partner: UNT Libraries Government Documents Department
Aircraft accidents : method of analysis

Aircraft accidents : method of analysis

Date: January 1, 1929
Creator: unknown
Description: This report on a method of analysis of aircraft accidents has been prepared by a special committee on the nomenclature, subdivision, and classification of aircraft accidents organized by the National Advisory Committee for Aeronautics in response to a request dated February 18, 1928, from the Air Coordination Committee consisting of the Assistant Secretaries for Aeronautics in the Departments of War, Navy, and Commerce. The work was undertaken in recognition of the difficulty of drawing correct conclusions from efforts to analyze and compare reports of aircraft accidents prepared by different organizations using different classifications and definitions. The air coordination committee's request was made "in order that practices used may henceforth conform to a standard and be universally comparable." the purpose of the special committee therefore was to prepare a basis for the classification and comparison of aircraft accidents, both civil and military. (author).
Contributing Partner: UNT Libraries Government Documents Department
Airplane drag

Airplane drag

Date: December 1929
Creator: Topfer, Carl
Description: It has been less well understood that the induced drag (or, better said, the undesired increase in the induced drag as compared with the theoretical minimum calculated by Prandtl) plays a decisive role in the process of taking off and therefore in the requisite engine power. This paper seeks to clarify the induced drag.
Contributing Partner: UNT Libraries Government Documents Department
Albessard "Triavion" Airplane (French) : A Two-Seat Tandem Monoplane

Albessard "Triavion" Airplane (French) : A Two-Seat Tandem Monoplane

Date: January 1929
Creator: Serryer, J
Description: Autostability is the watchword of this tandem monoplane. The tandem design causes a natural flat flight pattern. It can also land and take off from very short runways.
Contributing Partner: UNT Libraries Government Documents Department
The Amiot S.E.C.M. 110 C.1 : a single-seat pursuit monoplane

The Amiot S.E.C.M. 110 C.1 : a single-seat pursuit monoplane

Date: July 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Analysis of Aircraft Structures as Space Frameworks. Method Based on the Forces in the Longitudinal Members

The Analysis of Aircraft Structures as Space Frameworks. Method Based on the Forces in the Longitudinal Members

Date: July 1, 1929
Creator: Wagner, Herbert
Description: The following examples do not take up the discussion of viewpoints to be heeded in determining the design of a framework for given external conditions. Rather they are methods for determining the forces in airplane fuselages and wings, though similar considerations are applied to certain simple cases of a different kind. The object of this treatise is to summarize and amplify these considerations from definite viewpoints.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of flight and wind-tunnel tests on Udet airplanes with reference to spinning characteristics

Analysis of flight and wind-tunnel tests on Udet airplanes with reference to spinning characteristics

Date: March 1929
Creator: Herrmann, H
Description: This report presents an analysis of results of wind-tunnel tests conducted at the D.V.L. Values were determined for the effectiveness of all the controls at various angles of attack. The autorotation was studied by subjecting the rotating model to an air blast.
Contributing Partner: UNT Libraries Government Documents Department
Annual report of the National Advisory Committee for Aeronautics (14th).administrative report including Technical Reports nos. 283 to 308

Annual report of the National Advisory Committee for Aeronautics (14th).administrative report including Technical Reports nos. 283 to 308

Date: January 1, 1929
Creator: unknown
Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the president, congressional report, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Contributing Partner: UNT Libraries Government Documents Department
Autogenous welding in airplane construction

Autogenous welding in airplane construction

Date: July 1929
Creator: Kuchel, Ludwig
Description: Autogenous welding is discussed and various methods of testing those welds are presented.
Contributing Partner: UNT Libraries Government Documents Department
The balance of moments and the static longitudinal stability of airplanes

The balance of moments and the static longitudinal stability of airplanes

Date: December 1, 1929
Creator: Muller, Horst
Description: A nomogram is developed which renders it possible by drawing a few lines, to determine: the location of the center of gravity for zero wing and tail moments; the longitudinal dihedral angle; the tail coefficient F(sub h) iota/F(sub t). Moreover there is no difficulty in determining the magnitude of the restoring moment or of the unstable moment.
Contributing Partner: UNT Libraries Government Documents Department
Bauxite: Float-and-Sink Fractionations and Flotation Experiments

Bauxite: Float-and-Sink Fractionations and Flotation Experiments

Date: 1929
Creator: Gandrud, B. W. & De Vaney, Fred D.
Description: From Introduction: "This report presents the results of an investigation of the physical properties and characteristics of bauxite, with special reference to the possibility of applying commercial methods of concentration to low-grade bauxite."
Contributing Partner: UNT Libraries Government Documents Department
Beautifying the Farmstead

Beautifying the Farmstead

Date: 1929
Creator: Mulford, Furman Lloyd, b. 1869
Description: Revised edition. Report giving practical ways for families to beautify farmsteads. Contains sections on design, locations of buildings, walkways, driveways, lawns, trees and other plants.
Contributing Partner: UNT Libraries Government Documents Department
The Bernard 20 C.1 (French) : a single-seat pursuit monoplane

The Bernard 20 C.1 (French) : a single-seat pursuit monoplane

Date: July 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bibliography of Petroleum and Allied Substances, 1922 and 1923

Bibliography of Petroleum and Allied Substances, 1922 and 1923

Date: 1929
Creator: Britton, H.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Blackburn "Bluebird" Mark IV (British) all-metal biplane

The Blackburn "Bluebird" Mark IV (British) all-metal biplane

Date: April 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Boulton and Paul "Partridge" (British) : all-metal single-seat fighter

The Boulton and Paul "Partridge" (British) : all-metal single-seat fighter

Date: February 1, 1929
Creator: unknown
Description: The Partridge is a tractor biplane of orthodox design. It has a single supercharged Jupiter VII engine.
Contributing Partner: UNT Libraries Government Documents Department
Breeds of Sheep for the Farm

Breeds of Sheep for the Farm

Date: 1929
Creator: Marshall, F. R.
Description: Revised edition. Report discussing the different breeds of sheep raised by farmers and their suitability for either wool or mutton.
Contributing Partner: UNT Libraries Government Documents Department
The Bristol "Bulldog" (British): A Single-Seat All-Steel Fighter

The Bristol "Bulldog" (British): A Single-Seat All-Steel Fighter

Date: October 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Buckling tests of light-metal tubes

Buckling tests of light-metal tubes

Date: August 1, 1929
Creator: Schroeder, August
Description: I will attempt to determine mathematically the buckling-strength curves of various centrally loaded light-metal tubes which exhibit conspicuous differences of behavior under compressive loads. For this purpose I will employ Von Karman's method, after adapting it to special conditions.
Contributing Partner: UNT Libraries Government Documents Department
Calculation of the pressures on aircraft engine bearings

Calculation of the pressures on aircraft engine bearings

Date: December 1, 1929
Creator: Steigenberger, O
Description: For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
Contributing Partner: UNT Libraries Government Documents Department
Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness

Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness

Date: November 1, 1929
Creator: Stieger, H J
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
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