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
next
Aerodynamic Characteristics of Horizontal Tail Surfaces
From Summary: "Collected data are presented on the aerodynamic characteristics of 17 horizontal tail surfaces including several with balanced elevators and two with end plates. Curves are given for coefficients of normal force, drag, and elevator hinge moment. A limited analysis of the results has been made. The normal-force coefficients are in better agreement with the lifting-surface theory of Prandtl and Blenk for airfoils of low aspect ratio than with the usual lifting-line theory. Only partial agreement exists between the elevator hinge-moment coefficients and those predicted by Glauert's thin-airfoil theory."
Date:
1940
Creator:
Silverstein, Abe & Katzoff, S.
System:
The UNT Digital Library
Annual Report of the National Advisory Committee for Aeronautics (25th). Administrative Report Including Technical Report Nos. 645 to 680
Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Date:
1940
Creator:
unknown
System:
The UNT Digital Library
Board of Regents of the Texas State Teachers Colleges Biennial Report: 1938-1940
Biennial report of the Board of Regents of the Texas State Teachers Colleges discussing activities of state teachers' colleges and providing an overview of relevant statistics and financial information related to state funding.
Date:
1940
Creator:
Board of Regents of the Texas State Teachers Colleges
System:
The Portal to Texas History
Boundary-Layer Transition on the N.A.C.A. 0012 and 23012 Airfoils in the 8-Foot High-Speed Wind Tunnel
Report presenting determinations of boundary-layer transition on the NACA 0012 and 23012 airfoils in the high-speed wind tunnel over a range of Reynolds numbers. For all of the lift coefficients that testing occurred at, transition occurred in the region of estimated laminar separation at low Reynolds numbers and approached the point of minimum static pressure as a forward limit at high Reynolds numbers.
Date:
January 1940
Creator:
Becker, John V.
System:
The UNT Digital Library
Boundary-Layer Transition on the N.A.C.A. 0012 and 23012 Airfoils in the 8-Foot High-Speed Wind Tunnel, Special Report
Determinations of boundary-layer transition on the NACA 0012 and 2301 airfoils were made in the 8-foot high-speed wind tunnel over a range of Reynolds Numbers from 1,600,000 to 16,800,000. The results are of particular significance as compared with flight tests and tests in wind tunnels of appreciable turbulence because of the extremely low turbulence in the high-speed tunnel. A comparison of the results obtained on NACA 0012 airfoils of 2-foot and 5-foot chord at the same Reynolds Number permitted an evaluation of the effect of compressibility on transition.
Date:
January 1940
Creator:
Becker, John V.
System:
The UNT Digital Library
Coal-Mine Accidents in the United States, 1937
Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date:
1940
Creator:
Adams, William W.; Geyer, L. E. & Parry, M. G.
System:
The UNT Digital Library
Communicable Diseases in Texas: 1939
The report provides data and information about communicable and reportable diseases in Texas (chicken pox, diphtheria, dysentery, influenza, malaria, measles, meningitis, pellagra, pneumonia, poliomyelitis, scarlet fever, smallpox, tuberculosis, tularemia, typhoid fever, undulant fever, whooping cough) during 1939.
Date:
1940
Creator:
Texas. State Department of Health.
System:
The Portal to Texas History
Constant-Pressure Blowers
"The conventional axial blowers operate on the high-pressure principle. One drawback of this type of blower is the relatively low pressure head, which one attempts to overcome with axial blowers producing very high pressure at a given circumferential speed. The Schicht constant-pressure blower affords pressure ratios considerably higher than those of axial blowers of conventional design with approximately the same efficiency" (p. 1).
Date:
January 1940
Creator:
Sörensen, E.
System:
The UNT Digital Library
Correlation Index to Aid in Interpreting Crude-Oil Analyses
Report issued by the Bureau of Mines discussing the correlation index used for analyses of crude oils. The correlation index is presented and described in detail. This report includes tables, and illustrations.
Date:
1940
Creator:
Smith, Harold M.
System:
The UNT Digital Library
CORROSION OF THORIUM AND RELATED MATERIALS
None
Date:
January 1, 1940
Creator:
Feibig, J. G.
System:
The UNT Digital Library
Determination of the Characteristics of Tapered Wings
This report presents tables and charts for use in determining the characteristics of tapered wings. Theoretical factors are given from which the following characteristics of tapered wings may be found: the span lift distribution, the induced-angle-of attack distribution, the lift-curve slope, the angle of zero lift, the induced drag, the aerodynamic-center position, and the pitching moment about the aerodynamic center.
Date:
1940
Creator:
Anderson, Raymond F.
System:
The UNT Digital Library
The Development of Electrical Strain Gages
"The design, construction, and properties of an electrical-resistance strain gage consisting of fine wires molded in a laminated plastic are described. The properties of such gages are discussed and also the problems of molding of wires in plastic materials, temperature compensation, and cementing and removal of the gages. Further work to be carried out on the strain gage, together with instrument problems, is discussed" (p. 1).
Date:
January 1940
Creator:
de Forest, A. V. & Leaderman, H.
System:
The UNT Digital Library
DFS Dive-Control Brakes for Gliders and Airplanes and Analytical Study of the Drag of the DFS Dive-Control Brake
These two reports are surveys on the progress and present state of development of dive-control flaps for gliders and airplanes. The second article describes how on the basis of wind tunnel and free-flight tests, the drag increase on brake flaps of the type DFS, can be predicted. Pressure records confirm a two-dimensional load distribution along the brake-flap surface.
Date:
January 1940
Creator:
Jacobs, Hans & Wanner, Adolf
System:
The UNT Digital Library
Effect of Wing Loading, Aspect Ratio, and Span Loading of Flight Performances
"An investigation is made of the possible improvements in maximum, cruising, and climbing speeds attainable through increase in the wing loading. The decrease in wing area was considered for the two cases of constant aspect ratio and constant span loading. For a definite flight condition, an investigation is made to determine what loss in flight performance must be sustained if, for given reasons, certain wing loadings are not to be exceeded. With the aid of these general investigations, the trend with respect to wing loading is indicated and the requirements to be imposed on the landing aids are discussed" (p. 1).
Date:
January 1940
Creator:
Göthert, B.
System:
The UNT Digital Library
Explosion Hazards in Storage-Battery Rooms
Report issued by the Bureau of Mines discussing the safety and explosion hazards present in storage-battery rooms. Descriptions of storage-battery rooms and methods of ventilation are presented. This report includes tables, illustrations, and photographs.
Date:
1940
Creator:
Jones, G. W.; Campbell, John; Dillon, R. E. & Benson, O. B.
System:
The UNT Digital Library
FCC Reports, Volume 6, July 1, 1938 to February 28, 1939
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
1940
Creator:
United States. Federal Communications Commission.
System:
The UNT Digital Library
Fire-Retardant Treatments of Liquid-Oxygen Explosives
From Introduction Present Investigation: "The scope of the investigation was limited to study of the effects of fire-retardant treatments on the resistance to ignition, physical characteristics, and practical hazards of handling the liquid-oxygen explosive prepared from the granular carbonaceous absorbent mentioned, from wrappers of a triple-filled canvas, and from a liquid oxygen of standard high purity."
Date:
1940
Creator:
Denues, A. R. T.
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
General Potential Theory of Arbitrary Wing Section
This report gives the exact treatment of the problem of determining the 2-dimensional potential flow around wing sections of any type. The treatment is based directly on the solution of this problem as advanced by Theodorsen in NACA-TR-411. The problem condenses into the compact form of an integral equation capable of yielding numerical solutions by a direct process.
Date:
1940
Creator:
Theodorsen, T. & Garrick, I. E.
System:
The UNT Digital Library
Geology of Area Between Green and Colorado Rivers, Grand and San Juan Counties, Utah
From Abstract: "The area described in this report comprises about 900 square miles of arid land lying between the Green and Colorado Rivers south of the Denver & Rio Grande Western Railroad and southwest of the Salt Valley anticline. The rocks that crop out or that have been encountered in wells drilled in the are all sedimentary and range in age from Pennsylvania ti Upper Cretaceous. Mesizoic strata are especially well represented."
Date:
1940
Creator:
McKnight, Edwin Thor
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 Joseph A. Holmes Safety Association and Its Awards
Report discussing history and purpose of Joseph A. Holmes Safety Association along with describing the awards issued by the association.
Date:
1940
Creator:
Harrington, D.; Pedlow, Louise & Brown, Anna P.
System:
The UNT Digital Library
Knocking in an Internal-Combustion Engine
The question remains open of the relation between the phenomena of knocking in the engine and the explosion wave. The solution of this problem is the object of this paper. The tests were conducted on an aircraft engine with a pyrex glass window in the cylinder head. Photographs were then taken of various combinations of fuels and conditions.
Date:
January 1940
Creator:
Sokolik, A. & Voinov, A.
System:
The UNT Digital Library
Mechanical Concentration of Gases
From Introduction: "This bulletin deals with a new mechanical means of attacking the problem of separation. Although it is improbable that any one type of separation could hope to find universal application, the method described is to be regarded as an alternative to conventional means that has attractive possibilities in certain instances."
Date:
1940
Creator:
Maier, C. G.
System:
The UNT Digital Library