Collection
Technical Report Archive and Image Library
183
National Advisory Committee for Aeronautics Collection
148
USDA Farmers' Bulletins
26
USGS Topographic Map Collection
25
Government Documents A to Z Digitization Project
18
Texas State Publications
5
United States Experiment Station Record
3
Texas House of Representatives Journals
2
Texas Senate Journals
2
Boy and Girl Scout Annual Reports
1
3 More
Serial/Series Title
NACA Technical Memorandums
51
NACA Technical Reports
41
NACA Aircraft Circulars
38
United States Bureau of Mines Reports
29
Farmers' bulletin (United States. Dept. of Agriculture)
22
15 Minute Series (Topographic)
17
NACA Technical Notes
17
40th Legislature of Texas
4
Bulletin (Texas. Department of Agriculture)
4
Bulletin (United States. Bureau of Mines)
4
22 More
States
253 Matching Results
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Acid Processes for the Extraction of Alumina
Report presenting the Bureau of Mines' investigation into acid processes of extracting alumina. The paper discusses the sulphuric acid processes and other work with hydrochloric and nitric acids so that the comparative advantages can be appreciated.
Date:
1927
Creator:
Tilley, George S.; Millar, Russell Ward & Ralston, Oliver Caldwell
Object Type:
Report
System:
The UNT Digital Library
Aero Dopes and Varnishes
Report discussing before proceeding to discuss the preparation of dope solutions, it will be necessary to consider some of the essential properties which should be possessed of a dope film, deposited in and on the surface of an aero fabric. The first is that it should tighten the material and second it should withstand weathering.
Date:
July 1927
Creator:
Britton, H. T. S.
Object Type:
Report
System:
The UNT Digital Library
The aerodynamic characteristics of seven frequently used wing sections at full Reynolds number
This report contains the aerodynamic properties of the wing sections U.S.A. 5, U.S.A. 27, U.S.A. 35 A, U.S.A. 35 B, Clark Y, R.A.F. 15, and Gottingen 387, as determined at various Reynolds numbers up to an approximately full scale value in the variable density wind tunnel of the National Advisory Committee for Aeronautics. It is shown that the characteristics of the wings investigated are affected greatly and in a somewhat erratic manner by variation of the Reynolds number. In general there is a small increase in maximum lift and an appreciable decrease in drag at all lifts.
Date:
1927~
Creator:
Munk, Max M. & Miller, Elton W.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic laboratory at Cuatro Vientos
This report presents a description of the design of the Cuatro Vientes wind tunnel.
Date:
June 1927
Creator:
Caracciolo, Moreno
Object Type:
Report
System:
The UNT Digital Library
Air Cooling: An Experimental Method of Evaluating the Cooling Effect of Air Streams on Air-Cooled Cylinders
In this report is described an experimental method which the writer has evolved for dealing with air-cooled engines, and some of the data obtained by its means. Methods of temperature measurement and cooling are provided.
Date:
May 1927
Creator:
Alcock, J. F.
Object Type:
Report
System:
The UNT Digital Library
Air Force Tests of Sperry Messenger Model With Six Sets of Wings
From Summary: "The purpose of this test was to compare six well-known airfoils, the R.A.F 15, U.S.A. 5, U.S.A. 27, U.S.A. 35-B, Clark Y, and Gottingen 387, fitted to the Sperry Messenger model, at full scale Reynolds number as obtained in the variable density wind tunnel of the National Advisory Committee for Aeronautics; and to determine the scale effect on the model equipped with all the details of the actual airplane. The results show a large decrease in minimum drag coefficient upon increasing the Reynolds number from about one-twentieth scale to full scale. A comparison is made between the results of these tests and those obtained from tests made in this tunnel on airfoils alone."
Date:
January 20, 1927
Creator:
Shoemaker, James M.
Object Type:
Report
System:
The UNT Digital Library
The air forces on a systematic series of biplane and triplane cellule models
Report discussing the air forces on a systematic series of biplane and triplane cellule models which are measured in the atmospheric density tunnel.
Date:
1927
Creator:
Munk, Max M.
Object Type:
Report
System:
The UNT Digital Library
Airfoil lift with changing angle of attack
From Summary: "Tests have been made in the atmospheric wind tunnel of the National Advisory Committee for Aeronautics to determine the effects of pitching oscillations upon the lift of an airfoil. It has been found that the lift of an airfoil, while pitching, is usually less than that which would exist at the same angle of attack in the stationary condition, although exceptions may occur when the lift is small or if the angle of attack is being rapidly reduced. It is also shown that the behavior of a pitching airfoil may be qualitatively explained on the basis of accepted aerodynamic theory."
Date:
September 1927
Creator:
Reid, Elliott G.
Object Type:
Report
System:
The UNT Digital Library
Alpine Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Annual Report for the National Advisory Committee for Aeronautics (12th). Administrative Report Including Technical Reports Nos. 233 to 256
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.
Date:
1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1926
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1926, activities, ideals, finance, organizational leadership, and other information about scouting programs.
Date:
April 1, 1927
Creator:
Boy Scouts of America
Object Type:
Report
System:
The Portal to Texas History
Approximation method for determining the static stability of a monoplane glider
The calculations in this paper afford an approximate solution of the static stability. A derivation of the formulas for moment coefficient of a wing, moment coefficient of elevator, and the total moment of the combined wing and elevator and the moment coefficient with reference to the center of gravity are provided.
Date:
November 1927
Creator:
Lippisch, A.
Object Type:
Report
System:
The UNT Digital Library
Approximations for Column Effect in Airplane Wing Spars
"The significance attaching to "column effect" in airplane wing spars has been increasingly realized with the passage of time, but exact computations of the corrections to bending moment curves resulting from the existence of end loads are frequently omitted because of the additional labor involved in an analysis by rigorously correct methods. The present report represents an attempt to provide for approximate column effect corrections that can be graphically or otherwise expressed so as to be applied with a minimum of labor. Curves are plotted giving approximate values of the correction factors for single and two bay trusses of varying proportions and with various relationships between axial and lateral loads" (p. 485).
Date:
1927
Creator:
Warner, Edward P. & Short, Mac
Object Type:
Report
System:
The UNT Digital Library
"Avimeta" Three-Engine Commercial Monoplane: Type A.V.M. 132
This is an all metal aircraft, including the wing coverings. Both the framework and the sheet-metal coverings are Alferium, made by Schneider Co. A description of the wing, fuselage, landing gear, engines, fuel tanks, characteristics, drawings, and photographs are provided.
Date:
December 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Avro "Gosport," 504 R: A New Training Airplane
Circular describing the Avro Gosport 504 R, which is a new training airplane that is lighter than other Avro training airplanes but is strong enough to withstand rough handling that may be encountered in training. Details of the fuselage, construction, ailerons, tail, struts, landing gear, fuel tanks, performance, characteristics, and photographs are provided.
Date:
July 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Bart Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Bart Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
The Blackburn "Bluebird": Two-Seat Training and Sport Airplane
The Bluebird is a two seat, side by side biplane, designed primarily for training and pleasure flying. A description of the construction and flight characteristics is provided.
Date:
June 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Blum Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Blum Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
The Boeing Mail Airplane
The Boeing Mail Airplane is a biplane with cloth covered wings of wood and wire construction, a top speed of 130 MPH, and a fuel capacity of 100 gallons in two tanks.
Date:
August 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Bridge Grafting.
Provides instructions for bridge-grafting to save fruit trees that have been damaged by rodents or disease.
Date:
May 1927
Creator:
Yerkes, Guy E. (Guy Eston), 1880-
Object Type:
Book
System:
The UNT Digital Library
Buckwheat
Report discussing best practices for cultivating the grain crop buckwheat. Topics discussed include soil preparation, fertilizers, varieties, sowing, harvesting, insect enemies, and its many uses.
Date:
1927
Creator:
Leighty, C. E. (Clyde Evert), b. 1882
Object Type:
Pamphlet
System:
The UNT Digital Library
Building a Full-Size Glider
The building and flying of a glider is possible for anyone who can use a few basic tools. This report presents some plans and techniques for building your own glider.
Date:
September 1927
Creator:
Camm, F. J.
Object Type:
Report
System:
The UNT Digital Library