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Variation in the Number of Revolutions of Air Propellers

Description: Note describing the variation in the number of revolutions per minute and provides simple formulas that allow for advanced calculation to be made of the variation of propeller speed with variation of one or more dimensions of the propeller and allow the necessary corrections to be applied.
Date: March 1923
Creator: Achenbach, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Felt cloche

Description: Cloche hat of brown felt. The high, domed crown is of brown/mauve felt, pulled and gathered to create texture at top back. The brim of the same felt is narrow, curving down at sides and up at back. Around the base of the crown is a wide band of brown grosgrain ribbon, which passes through slots in the upturned back section of the brim. At the side of the hat, the ribbon is gathered slightly, and has three segments that extend forward around the crown, fanning upwards to partly cover the front o… more
Date: 1923
Creator: Amhat
Item Type: Refine your search to only Physical Object
Partner: UNT College of Visual Arts + Design
open access

Production and Briquetting of Carbonized Lignite

Description: From Introduction: "The Bureau of Mines since its establishment has always taken an active interest in the utilization of lignite and in the development of the lignite deposits of the United States. Extensive lignite fields occur in the west central States, notably in North Dakota, Montana, Wyoming, Colorado, and Texas; there are smaller areas in several other Sates, some of which are widely separated."
Date: 1923
Creator: Babcock, E. J. & Odell, W. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Model Supports and Their Effects on the Results of Wind Tunnel Tests

Description: "The airflow about a model while being tested is often sufficiently affected by the model support to lead to erroneous conclusions unless appropriate corrections are used. In this paper some new material on the subject is presented, together with a review of the airfoil support corrections used in several other laboratories" (p. 1).
Date: February 1923
Creator: Bacon, David L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evolution of the Helicopter

Description: Report presenting an investigation of problems related to helicopters. Also included are the history of the evolution of the helicopter and a series of propeller experiments.
Date: March 1923
Creator: Balaban, Karl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Influence of Ribs on Strength of Spars

Description: Note presenting an investigation to determine what effect joints connected with brackets, nails, and glue has on the strength of aircraft wing spars. Equations used to determine the results of loading tests are provided.
Date: May 1923
Creator: Ballenstedt, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Decay of a Simple Eddy

Description: The principal result obtained in this report is a generalization of Taylor's formula for a simple eddy. The discussion of the properties of the eddy indicates that there is a slight analogy between the theory of eddies in a viscous fluid and the quantum theory of radiation. Another exact solution of the equations of motion of viscous fluid yields a result which reminds one of the well-known condition for instability in the case of a horizontally stratified atmosphere.
Date: 1923
Creator: Bateman, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of the Value of Wood for Structural Purposes

Description: Note presenting an investigation of the value of wood for structural parts subject to stress. An exploration of several different types of wood is provided, including the coefficeint of elongation in bending, tensile strength, compression strength, and energy required for fracture is provided.
Date: April 1923
Creator: Baumann, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aeronautical Instruments

Description: Note presenting a number of instruments that can assist pilots with observing the position of the airplane. Some of the instruments include an inclinometer with stationary system of reference and an inclinometer with moving axes.
Date: June 1923
Creator: Bennewitz, Kurt
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Fowl Tick and How Premises May Be Freed from It

Description: Revised edition. Report discussing the fowl tick, which commonly affects chickens but also other poultry. Topics discussed include fowl tick distribution, effects of tick attacks or infections, life cycle, and methods of combating the tick.
Date: 1923
Creator: Bishopp, F. C. (Fred Corry), 1884-1970
Item Type: Refine your search to only Pamphlet
Partner: UNT Libraries Government Documents Department
open access

Determination of Climbing Ability

Description: "The vertical distribution of the pressure, temperature, and density of the atmosphere varies from day to day. Thus, rates of climb on different days cannot be compared directly, but must be corrected with reference to a standard rate of diminution of air density with increasing altitude. The following problem, therefore, has to be solved" (p. 1).
Date: November 1923
Creator: Blasius, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Safety Factors in Aviation

Description: A formula for calculating the safety of airplanes is given and the stresses on airplane components are calculated. Some questions regarding the information obtained from the formula and its application to safe airplane design for pilots are provided.
Date: April 1923
Creator: Bleriot, Louis
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Cote d'Azur

Description: A landscape painting of the French Riviera.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1923~
Creator: Bonnard, Pierre
Item Type: Refine your search to only Artwork
Partner: UNT College of Visual Arts + Design
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