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open access

How to Get Rid of Rats.

Description: Describes methods of eliminating a rat infestation in terms of food sources, poisons, trapping, and rat proofing. Also describes the natural enemies and diseases of rats, and the benefits of community cooperation in their control.
Date: April 1923
Creator: Silver, James, b. 1890
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Aerial photography : obtaining a true perspective

Description: Report discussing a demonstration was given within the last few days at the British Museum by Mr. J. W. Gordon, author of "Generalized Linear Perspective" (Constable and Co.), a work describing a newly-worked-out system by which photographs can be made available for the purpose of exactly recording the dimensions of the objects photographed even when the objects themselves are presented foreshortened in the photograph.
Date: April 1923
Creator: United States. National Advisory Committee for Aeronautics.
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
open access

My Experience With Helicopters

Description: The author recounts his experiments with helicopters. The object of his investigations was to remain stationary in the air for five minutes and to make a closed flight at low altitude. Some of the topics discussed include stabilization, horizontal flight, and directional control.
Date: April 1923
Creator: Oemichen, Etienne
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind-Driven Propellers (Or "Windmills")

Description: Wind-driven propellers are much used as sources of power for equipment such as radios. This report establishes the principles involved and acquaints the reader with rules for design of such windmills.
Date: April 1923
Creator: Munk, Max M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind Tunnel of Zeppelin Airship Company

Description: This report discusses the general considerations for the design of aerodynamic laboratories. The dimensions, construction, and components of the wind tunnel are given special attention.
Date: April 1923
Creator: Munk, Max M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The New Interpretation of the Laws of Air Resistance

Description: A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.
Date: April 1923
Creator: Prandtl, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experiments With Fabrics for Covering Airplane Wings

Description: Note presenting a study of the strength and deformation of the fabric used to cover airplane wings, both undoped and doped. The doping of the fabric with Cellon seems to have a predominant influence on the results according to the nature and number of the coats.
Date: April 1923
Creator: Pröll, A.
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
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