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 Decade: 1920-1929
 Year: 1929
 Collection: Technical Report Archive and Image Library
Survey of Gravities of Domestic Crudes

Survey of Gravities of Domestic Crudes

Date: April 1929
Creator: Hopkins, G. R. & Coons, A. B.
Description: Report on the comparative gravities of oil extracted from different regions of the United States.
Contributing Partner: UNT Libraries Government Documents Department
Ocher and Ochery Earths

Ocher and Ochery Earths

Date: May 1929
Creator: Santmyers, R. M.
Description: Report about ocher or ochery earth, "a natural mineral pigment composed largely of clay permeated with hydrated iron (ferric oxide)" (p. 2). It includes information about the uses of choer, substitutes, artificial ocher, mining and local deposits, import and export of ocher, and related information.
Contributing Partner: UNT Libraries Government Documents Department
Report of the Twenty-Second National Conference on Weights and Measures, 1929

Report of the Twenty-Second National Conference on Weights and Measures, 1929

Date: June 1929
Creator: United States. National Bureau of Standards.
Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Contributing Partner: UNT Libraries Government Documents Department
Revision of the American Chipmunks: (Genera Tamias and Eutamias)

Revision of the American Chipmunks: (Genera Tamias and Eutamias)

Date: November 1929
Creator: Howell, Arthur H.
Description: Brief summary of the geographic distribution, life history, and subgenera of genera Tamias and Eutamias.
Contributing Partner: UNT Libraries Government Documents Department
Morane-Saulnier 180 light airplane (French) : a single-seat training monoplane

Morane-Saulnier 180 light airplane (French) : a single-seat training monoplane

Date: March 1, 1929
Creator: unknown
Description: Equipped with a 40 HP Salmson engine, it is a single seat parasol type construction.
Contributing Partner: UNT Libraries Government Documents Department
Nieuport-Delage 640 (French) : commercial high-wing monoplane

Nieuport-Delage 640 (French) : commercial high-wing monoplane

Date: March 1, 1929
Creator: unknown
Description: The Nieuport Delage 640 is a single engine commercial high-wing monoplane of all wood construction, including the fuselage and tail. It's landing gear is hinged in two parts.
Contributing Partner: UNT Libraries Government Documents Department
The Westland IV commercial monoplane (British)three "Cirrus III" engine

The Westland IV commercial monoplane (British)three "Cirrus III" engine

Date: April 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The "Potez 33" military airplane (French)

The "Potez 33" military airplane (French)

Date: June 1, 1929
Creator: unknown
Description: None
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 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
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
Farman two-engine commercial biplane F.180 (French)

Farman two-engine commercial biplane F.180 (French)

Date: October 1, 1929
Creator: unknown
Description: The F180 was designed for reliable long distance travel in stages of 500, 1000, 1500 km, carrying loads of 2500, 2000, and 1500 kg respectively. At maximum load it can carry 20 passengers.
Contributing Partner: UNT Libraries Government Documents Department
The Morane Sauliner 222 airplane (French) : a single-seat pursuit monoplane

The Morane Sauliner 222 airplane (French) : a single-seat pursuit monoplane

Date: December 1, 1929
Creator: Frachet, Andre
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The transformation of heat in an engine

The transformation of heat in an engine

Date: April 1929
Creator: Neumann, Kurt
Description: This report presents a thermodynamic basis for rating heat engines. The production of work by a heat engine rests on the operation of supplying heat, under favorable conditions, to a working fluid and then taking it away.
Contributing Partner: UNT Libraries Government Documents Department
The Saunders "Cutty Sark" commercial seaplane (British) : a high-wing monoplane flying boat

The Saunders "Cutty Sark" commercial seaplane (British) : a high-wing monoplane flying boat

Date: November 1, 1929
Creator: unknown
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
Handley Page metal construction

Handley Page metal construction

Date: October 1, 1929
Creator: unknown
Description: In this report Handley Page construction techniques are shown such as: solid-drawn tubular duralumin spars are used in the stabilizer; plain channel sections are used extensively for minor components; and the manner of assembling them into a stabilizer compression strut is shown.
Contributing Partner: UNT Libraries Government Documents Department
Unsymmetrical forces in an airplane cell

Unsymmetrical forces in an airplane cell

Date: November 1, 1929
Creator: Vogt, R
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Force measurements on airplanes

Force measurements on airplanes

Date: June 1, 1929
Creator: Seewald, F
Description: The most essential phenomena of aircraft should be classified according to their origin and then measured. Information can thus be obtained in a quicker, cheaper, and more reliable way than otherwise would be possible.
Contributing Partner: UNT Libraries Government Documents Department
Fire prevention on airplanes. Part II

Fire prevention on airplanes. Part II

Date: October 1, 1929
Creator: Sabatier, J
Description: This part of the report presents a detailed examination of spark prevention, fire extinguishers, and fuel tank location and design. A continued program of investigations and research is also proposed.
Contributing Partner: UNT Libraries Government Documents Department
:Theoretical investigation of the effect of the ailerons on the wing of an airplane

:Theoretical investigation of the effect of the ailerons on the wing of an airplane

Date: April 1, 1929
Creator: Wieselsberger, C
Description: The present work investigates, on the basis of Prandtl's wing theory, the form of the lift distribution when the ailerons are deflected in opposite directions. An ideal fluid and a wing with a rectangular form are assumed. The moments must not cause any rotation of the wing or any deviation from the rectilinear motion.
Contributing Partner: UNT Libraries Government Documents Department
Information obtained from airplane flight tests in the year 1927-1928

Information obtained from airplane flight tests in the year 1927-1928

Date: October 1, 1929
Creator: Hubner, W
Description: The information obtained from flight tests in 1927-1928 covers chiefly the effect of the structural features of an airplane on its stability, controllability, maneuverability and spinning characteristics.
Contributing Partner: UNT Libraries Government Documents Department
Structural details of the giant Dornier seaplane "Do X."

Structural details of the giant Dornier seaplane "Do X."

Date: October 1929
Creator: Gustosa, Corrado
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Mathematical and experimental investigation of heat control and power increase in air-cooled aircraft engines

Mathematical and experimental investigation of heat control and power increase in air-cooled aircraft engines

Date: November 1, 1929
Creator: Gosslau, F
Description: 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. The air stream was produced a seven-watt blower. The air flowed through a current rectifier (honeycomb), diffuser, air chamber with quieting sieves and a nozzle.
Contributing Partner: UNT Libraries Government Documents Department
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