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An approximate spin design criterion for monoplanes

Description: "A quantitative criterion of merit has been needed to assist airplane designers to incorporate satisfactory spinning characteristics into new designs. An approximate empirical criterion, based on the projected side area and the mass distribution of the airplane, has been formulated in a recent British report. In the present paper, the British results have been analyzed and applied to American designs. A simpler design criterion based solely on the type and the dimensions of the tail, has been d… more
Date: June 1939
Creator: Seidman, Oscar & Donlan, Charles J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Unsteady Lift of a Finite Wing

Description: Note discussing the lift of a finite wing including the calculations and constants for each step of the lift. This information is compared against the lift of an infinite wing. From Summary: "Unsteady lift function for wings of finite aspect ratio have been calculated by approximate methods involving corrections of the aerodynamic inertia and of the angle of the infinite wing. The starting lift of the finite wing is found to be only slightly less than that of the infinite wing; whereas the fina… more
Date: January 1939
Creator: Jones, Robert T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pressure drop in tank and float vent tubes on diving airplanes

Description: Report presenting an experiment regarding tank and float venting conditions that exist on diving airplanes undergoing rapid changes in altitude. The results indicated that large pressure differences build up between the outside and inside of tanks and floats on diving airplanes unless the correct size of venting tube is used.
Date: January 1939
Creator: Waldron, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nomenclature for Aeronautics

Description: The nomenclature for aeronautics presented in this Report No. 474 is a revision of the last previous report on this subject (i.e., Report no. 240.) This report is published for the purpose of encouraging greater uniformity and precision in the use of terms relating to aeronautics, both in official documents of the Government and in commercial publications. Terms in general use in other branches of engineering have been included only where they have some special significance in aeronautics, or f… more
Date: 1939
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Study of Soil Erosion and its Control in the United States with Special Reference to Texas

Description: A study of soil erosion in the United States, especially in Texas, which brings attention to the causes of soil erosion under the existing system of farm management. The material gathered and compiled and arranged under certail main heading. Two chapters deal with present and immediate causes of erosions and their results. One full chapter takes up the history of the conservation movement and attempts to show how slow Texans have been in comparison with some of the other states of the United St… more
Date: June 1939
Creator: Merrell, Jesse Byron
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Corrugated Metal Diaphragms for Aircraft Pressure-Measuring Instruments

Description: Note presenting a description of a large number of corrugated diaphragms of beryllium copper, phosphor bronze, and Z-nickel with geometrically similar outlines but various diameters and thicknesses were formed by hydraulic pressing. The apparatus and technique used in the manufacture, testing, and heat treatment are described. Results regarding pressure-deflection curves, load limit, effect of center reinforcing, snap-action diaphragms, deflection traverse, thickness variations, and concentrate… more
Date: November 1939
Creator: Wildhack, W. A. & Goerke, V. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

To Determine Whether or Not the Colleges of Texas are Preparing their Students of Industrial Arts to Teach Effectively in the High Schools of Texas

Description: This is a study to determine whether the colleges of Texas are preparing their students of industrial arts to teach effectively in the high schools of Texas. The objectives of this study are to draw conclusions as to whether or not the colleges of Texas are preparing their students of industrial arts to teach effectively in the modern high schools; to show the training of industrial arts teachers; and to determine to what extent industrial arts are offered in the high schools of Texas.
Date: June 1939
Creator: Farmer, Joe Harold
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Survey of the Physical Education Programs for Girls in the Affiliated Schools within a Radius of Sixty Miles of Denton Texas

Description: A survey of the physical education programs for high school girls near Denton, Texas to determine the extent of compliance with state law for physical education, the facilities for the program, training of the teachers, type of physical education program, and teaching load of physical education teachers.
Date: June 1939
Creator: Morriss, May
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Legal Status of Labor in Great Britain and the United States

Description: An investigation of the legal status of labor in Great Britain and the United States. The basis of labor legislation is considered, and the development of labor legislation traced in both countries. A comparison of the legal status of labor at the present time in both countries is made. - Abstract
Date: June 1939
Creator: Richardson, Addran Dee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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