Resource Type
Partner
Collection
Technical Report Archive and Image Library
176
National Advisory Committee for Aeronautics Collection
151
Texas State Publications
15
Harris and Eliza Kempner
2
Office of Scientific & Technical Information Technical Reports
2
Boy and Girl Scout Annual Reports
1
Docs In The News
1
Federal Communications Reports
1
Stillwater History Museum at the Sheerar, Stillwater, Oklahoma
1
Serial/Series Title
NACA Technical Notes
46
NACA Technical Memorandums
41
NACA Technical Reports
27
NACA Wartime Reports
19
NACA Special Reports
16
NACA Advanced Confidential Reports
15
United States Bureau of Mines Reports
14
Monthly Report of the Attorney General of the State of Texas
9
United States Geological Survey Reports
7
NACA Memorandum Reports
4
30 More
States
Results:
1 - 24 of
198
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Aerodynamic heating and the deflection of drops by an obstacle in an air stream in relation to aircraft icing
From Summary: "Two topics of interest to persons attempting to apply the heat method of preventing ice formation on aircraft are considered. Surfaces moving through air at high speed are shown, both theoretically and experimentally, to be subject to important aerodynamic heating effects that will materially reduce the heat required to prevent ice. Numerical calculations of the path of water drops in an air stream around a circular cylinder are given. From these calculations, information is obtained on the percentage of the swept area cleared of drops."
Date:
October 1940
Creator:
Kantrowitz, Arthur
System:
The UNT Digital Library
Stemming in Metal Mines. Progress Report 2
Report issued by the U.S. Bureau of Mines on the progress made in metal-mine stemming. Different types of stemming methods and testing procedures are presented. This report includes tables, illustrations, and photographs.
Date:
August 1940
Creator:
Johnson, John A.; Agnew, Wing G. & Mosier, McHenry
System:
The UNT Digital Library
United States Earthquakes 1940
Report discussing earthquake activity in the United States during 1940. The report is broken down by regions and has sections for specific earthquakes.
Date:
1940
Creator:
unknown
System:
The UNT Digital Library
Sound Insulation of Wall and Floor Constructions
Report presenting the results of sound-transmission measurements made on a number of types of sound insulating construction.
Date:
1940
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
Quarry Accidents in the United States During the Calendar Year 1937
Report issued by the Bureau of Mines over quarry accidents in the U.S. during 1937. The number, type, and location of the accidents are presented and discussed. This report includes tables.
Date:
1940
Creator:
Adams, William Waugh & Wrenn, Virginia E.
System:
The UNT Digital Library
An Autunite Deposit in the Rosamond Hills, Kern County, California
From introduction: An autunite deposit in the SW 1/4 sec. 25, T. 10 N., R. 13 W. San Bernardino meridian, was visited by F. M. Chace on May 6 and 15, 1950. The deposit is about 100 yards west of a north-south country road and is at an altitude of approximately 2,775 feet. The autunite-bearing tuffaceous sandstone strikes N. 35-40 W. and dips 20 -25 SW. It has been traced about 40 feet along the strike at the base of the outcrop and for about 20 feet up the dip. Insufficient work was done to give an accurate idea of the size of the deposit or to determine if other autunite-bearing beds are present.
Date:
August 1940
Creator:
Chace, F. M.
System:
The UNT Digital Library
Geology of the Kettleman Hills Oil Field, California: Stratigraphy, Paleontology, and Structure
From Introduction: The field work that furnished the basis for this report was begun in 1930 and was continued at intervals until 1934. The anticlinal character of the Kettleman Hills is apparent to even the casual observer, but the many structural complications due to an intricate network of minor faults, at least in North Dome and Middle Dome, are much less obvious. Though it is improbable that these faults have any relation to the occurrence of oil, an attempt was made to map them, not only to represent the structure adequately but also because the stratigraphy could not be understood if they were neglected. Faunal zones were particularly useful in mapping. On the other hand, some lithologic units proved to be more persistent than had been expected. The two sets of features-fossils and lithology-served as checks on each other.
Date:
1940
Creator:
Woodring, W. P.; Stewart, Ralph & Richards, R. W.
System:
The UNT Digital Library
THE RECOVERY OF URANIUM FROM BYPRODUCT SCRAP MATERIALS
None
Date:
January 1, 1940
Creator:
Spiegler, L.
System:
The UNT Digital Library
Preliminary Tests in the NACA Tank to Investigate the Fundamental Characteristics of Hydrofoils
A preliminary investigation made to study the hydrodynamic properties and general behavior of simple hydrofoils. Six plain, rectangular hydrofoils were tested in a tank at various speeds, angles of attack, and depths below the water surface. The results are presented as curves of the lift and drag coefficients plotted against speed for various angles of attack and depths for which the hydrofoils were tested.
Date:
September 1940
Creator:
Ward, Kenneth E. & Land, Norman S.
System:
The UNT Digital Library
High-speed drag tests of several fuselage shapes in combination with a wing
Drag testing was conducted in the high-speed wind tunnel of 23 conditions combining six streamline shapes and three conventional cowling-fuselage bodies. All of the models were tested in combination with a wing in order to include wing-fuselage interference effects. The critical speeds of combinations tested were, in general, determined by the wing-fuselage juncture.
Date:
August 1940
Creator:
Draley, Eugene C.
System:
The UNT Digital Library
Wind Tunnel Tests of a Submerged-Engine Fuselage Design
Report presenting tests conducted in the 8-foot high-speed wind tunnel of a scale model pursuit-type fuselage with practicable internal duct arrangement designed to meet all of the air requirements of a 1000-horsepower radial engine submerged at the maximum section. The results showed that the required internal flow can be obtained with negligible ducting losses provided that basic principles are observed in designing the air passages.
Date:
October 1940
Creator:
Becker, John V. & Baals, Donald D.
System:
The UNT Digital Library
Investigation of the Boundary Layer About a Symmetrical Airfoil in a Wind Tunnel of Low Turbulence
Report presenting a series of boundary-layer surveys over the surface of an NACA 0012 airfoil at zero lift. Results regarding the pressure distribution, laminar boundary layer, transition, turbulent boundary layer, drag, and skin friction are provided.
Date:
August 1940
Creator:
von Doenhoff, Albert E.
System:
The UNT Digital Library
Mineral Industries Survey of the United States, California: Tuolumne and Mariposa Counties, Mother Lode District (South). Mines of the Southern Mother Lode Region, Part 2 -- Tuolumne and Mariposa Counties
Report issued by the Bureau of Mines over mining operations in the southern Mother Lode Region of California. A review of this area is presented, and discussed. This report includes tables, illustrations, and photographs.
Date:
1940
Creator:
Julihn, C. E. & Horton, F. W.
System:
The UNT Digital Library
The Design of Cooling Ducts With Special Reference to the Boundary Layer at the Inlet
"A study has been made of underslung cooling ducts with special references to the problems presented by the boundary layer on the fuselage skin. It was found that good flow can be obtained in such ducts by (1) making the inlet opening of such size that the mean inlet velocity is about 0.6 the free-stream velocity and (2) providing vanes behind as well as ahead of the radiator. Tables to facilitate design are included, together with an example " (p. 1).
Date:
December 1940
Creator:
Katzoff, S.
System:
The UNT Digital Library
Drag and propulsive characteristics of air-cooled engine-nacelle installations for two-engine airplanes
Report presenting a study on wing-nacelle propeller arrangements using a two-engine airplane with nacelles varying in diameter. Results regarding the power-off characteristics, propulsive and overall efficiencies, power-on characteristics, and pressure distributions are provided.
Date:
December 1940
Creator:
Wilson, Herbert A., Jr. & Lehr, Robert R.
System:
The UNT Digital Library
Requirements for Unit Fuel-Injection Systems
"A unit injector was operated under various test conditions with a cam outline giving a high rate of plunger displacement. The rate of discharge of the unit injector followed the plunger displacement for the outwardly opening injection valve (open nozzle) except under conditions of high fuel pressures when the effect of fuel compressibility decreased the rate of discharge as the pressure increased. The rate of discharge for the inwardly opening injection valve (closed nozzle) did not directly follow the plunger displacement" (p. 1).
Date:
July 1940
Creator:
Marsh, Edred T.
System:
The UNT Digital Library
Stress Distribution in and Equivalent Width of Flanges of Wide, Thin-Wall Steel Beams
"The use of different forms of wide-flange, thin-wall steel beams is becoming increasingly widespread. Part of the information necessary for a national design of such members is the knowledge of the stress distribution in and the equivalent width of the flanges of such beams. This problem is analyzed in this paper on the basis of the theory of plane stress. As a result, tables and curves are given from which the equivalent width of any given beam can be read directly for use in practical design" (p. 1).
Date:
November 1940
Creator:
Winter, George
System:
The UNT Digital Library
An Investigation of Sheet-Stiffener Panels Subjected to Compression Loads With Particular Reference to Torsionally Weak Stiffeners
"A total of 183 panel specimens of 24ST aluminum alloy with nominal thickness of 0.020, and 0.040 inch with extruded bulb-angle sections of 12 shapes spaced 4 and 5 inches as stiffeners were tested to obtain the buckling stress and the amplitude of the maximum wave when buckled. Bulb angles from 3 to 27 1/2 inches long were tested as pin-end columns. The experimental data are presented as stress-strain and column curves and in tabular form" (p. 1).
Date:
February 1940
Creator:
Dunn, Louis G.
System:
The UNT Digital Library
Measured Moments of Inertia of 32 Airplanes
"A compilation of the experimentally determined moments of inertia of 32 airplanes is presented. The measurements were obtained at the laboratories of the NACA by means of a pendulum method. The airplanes tested are representative of several types of aircraft of gross weight less than 10,000 pounds. The results are presented in coefficient as well as in dimensional form. An elementary analysis of the data disclosed the possibility of grouping the results according to wing type of the airplane, as low-wing monoplanes, parasol and high-wing monoplanes, and biplanes" (p. 1).
Date:
October 1940
Creator:
Gracey, William
System:
The UNT Digital Library
Measurement of the Forces Acting on Gliders in Towed Flight
"The magnitude, the direction, and the fluctuations of tow forces exerted upon gliders by towing them aloft behind an automobile were measured under a variety of conditions covering a range from gentle to severe types of operation. For these tests, the glider towing force did not exceed 1.6 of the gross weight of the glider. V-G records obtained during the towed-flight period as well as during the subsequent return glide to earth showed accelerations in the range from 3 to -1 g. The results of preliminary airplane tow tests are also presented" (p. 1).
Date:
February 1940
Creator:
Klemperer, W. B.
System:
The UNT Digital Library
An Investigation of the Prevention of Ice on the Airplane Windshield
"An investigation of three methods for the prevention and the removal of ice on an airplane windshield has been completed. The methods were: electric heating; hot-air heating; and an alcohol-dispensing, rotating wiper blade. The results showed that vision through the airplane windshield could be maintained during severe icing conditions by the use of heat" (p. 1).
Date:
March 1940
Creator:
Rodert, Lewis A.
System:
The UNT Digital Library
The frequencies of cantilever wings in beam and torsional vibrations
From Summary: "Methods are described for calculating the period and frequency of vibration of cantilever wings and similar structures in which the weight and moment of inertia vary along the span. Both the beam and torsional frequencies may be calculated by these methods. The procedure is illustrated by examples."
Date:
January 1940
Creator:
Burgess, C. P.
System:
The UNT Digital Library
Propeller Rotation Noise Due to Torque and Thrust
"Sound pressure of the first four harmonics of rotation from a full-scale two-blade propeller were measured and are compared with values calculated from theory. The comparison is made (1) for the space distribution with constant tip speed and (2) for fixed space angles with variable tip speed. A relation for rotation noise from an element of radius developed by Gutin is given showing the effect of number of blades on the rotation noise" (p. 1).
Date:
January 1940
Creator:
Deming, Arthur F.
System:
The UNT Digital Library
Notes on the stalling of vertical tail surfaces and on fin design
From Summary: "A discussion is given of the important aspects of the stalling of vertical tail surfaces. The type of instability encountered is described and the possibilities of inadvertent occurrence are noted. The influence of directional flight tests on the behavior of a airplane when the tail stall takes place is discussed. In this connection, flight tests of a twin-engine airplane in which the vertical fin area was increased are cited."
Date:
October 1940
Creator:
Thompson, F. L. & Gilruth, R. R.
System:
The UNT Digital Library