Collection
Technical Report Archive and Image Library
991
National Advisory Committee for Aeronautics Collection
657
Office of Scientific & Technical Information Technical Reports
281
TRAIL Microcard Collection
193
Texas Attorney General Opinions
158
USGS Topographic Map Collection
35
Government Documents A to Z Digitization Project
33
Texas State Publications
19
USDA Farmers' Bulletins
14
Government Comics
5
7 More
Serial/Series Title
NACA Research Memorandums
353
NACA Technical Notes
222
Atomic Energy Commission Reports
120
Hanford Works Reports
63
HW (Series)
60
United States Geological Survey Reports
60
United States Bureau of Mines Reports
57
NACA Technical Reports
49
Trace elements investigations report
38
NACA Technical Memorandums
32
79 More
States
1,530 Matching Results
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Measurements of average heat-transfer and friction coefficients for subsonic flow of air in smooth tubes at high surface and fluid temperatures
An investigation of forced-convection heat transfer and associated pressure drops was conducted with air flowing through smooth tubes for an over-all range of surface temperature from 535 degrees to 3050 degrees r, inlet-air temperature from 535 degrees to 1500 degrees r, Reynolds number up to 500,000, exit Mach number up to 1, heat flux up to 150,000 btu per hour per square foot, length-diameter ratio from 30 to 120, and three entrance configurations. Most of the data are for heat addition to the air; a few results are included for cooling of the air. The over-all range of surface-to-air temperature ratio was from 0.46 to 3.5.
Date:
December 31, 1950
Creator:
Humble, Leroy V.; Lowdermilk, Warren H. & Desmon, Leland G.
Object Type:
Report
System:
The UNT Digital Library
NEPA Project quarterly progress report, April 1--June 30, 1950
Exploration of various types of power plant cycles for nuclear propelled aircraft has been continued during this quarter. The principal current objective of the project is the development of information which will make an intelligent choice of the basic power plant cycle possible. It is still hoped that this choice can be made late in 1950. The survey studies which have been under way for several months continued during the quarter. These consist of analyses and rough preliminary layouts for various types of aircraft, using each of the several basic cycles which have been seriously considered for each of the three phases of development. Although it is still extremely premature to discuss the relative merits of the various cycles, the information so for developed discloses some cycle differences which may, if confirmed by additional work, be significant. In this respect, there have been no recent major changes in the comparative standings of the cycles.
Date:
December 31, 1950
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Progress Report on the Concentration of Pitchblende
Abstract: "The results of leaching studies on sulphide froth products obtained from the flotation of high-sulphur pitchblende are presented. The distribution of molybdenum in flotation products is also given. The flotation test at Middlesex is evaluated."
Date:
December 31, 1950
Creator:
Wesner, A. L.; Tangel, O. F. & Richardson, A. C.
Object Type:
Report
System:
The UNT Digital Library
Refining of MgX and Other Uranium-Bearing Materials
A study of the effect of feed and ether acidity on the extraction of vanadium and molybdenum from process solutions by ethyl ether is described. Results of batch and continuous extraction tests on the extraction of uranium from process slurries by tributyl phosphate-Gulfspray naphtha are presented, including studies of the effects of feed and scrub acidities on the concurrent extraction of molybdenum. The effect of temperature on the stripping of uranium from tributyl phosphate was studied briefly. Results from fractional precipitation of MgX from dilute sulfuric acid solutions indicate that, in the presence of sufficient iron, phosphate is precipitated as ferric phosphate, and not as uranyl pho sphate. (auth)
Date:
December 31, 1950
Creator:
Ewing, R. A.; Belcher, R. L.; Kiehl, S. J. Jr. & Bearse, A. E.
Object Type:
Report
System:
The UNT Digital Library
Topical Report on Refining of MgX and Other Uranium-Bearing Materials
This report discusses a study which explores the effects of feed and acidity on extractive methods. From abstract: "Results from fractional precipitation of MgX from dilute sulfuric acid solutions indicate that, in the presence of sufficienct iron, phosphate is precipitated as ferric phosphate, and not as uranyl phosphate."
Date:
December 31, 1950
Creator:
Ewing, R. A.; Belcher, R. L.; Kiehl, S. J., Jr. & Bearse, A. E.
Object Type:
Report
System:
The UNT Digital Library
University of Chicago Toxicity Laboratory quarterly progress report No. 7
This volume is a quarterly progress report for the University of Chicago Toxicology Laboratory. Thirteen individual reports are contain herein and each has been separately indexed and abstracted for the database.
Date:
December 31, 1950
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The University of Rochester Atomic Energy Project quarterly report, April 1, 1950--June 30, 1950
This quarterly progress report gives an overview of the University of Rochester Atomic Energy Project for April 1, 1950 thru June 30, 1950. Sections included are entitled (1) Biological Effects of External Radiation (X-rays and gamma rays), (2) Biological Effects of External Radiation (Infra-red and ultraviolet), (3) Biological effects of radioactive materials (polonium, radon, thoron, and miscellaneous project materials), (4) Uranium, (5) Beryllium, (7) thorium, (8) fluoride, (9) zirconium, (10) special materials, (11) Isotopes, (12) Outside services, (12) Project health, (13) Health physics, (14) Special Clinical Service, and (15) Instrumentation (Spectroscopy, electron microscopy, x-ray and nuclear radiation detectors, x-ray diffraction, and electronics).
Date:
December 31, 1950
Creator:
Blair, H.A.
Object Type:
Report
System:
The UNT Digital Library
Altitude performance characteristics of turbojet-engine tail-pipe burner with variable-area exhaust nozzle using several fuel systems and flame holders
From Introduction: "The performance of several tail-pipe burners with fixed area exhaust nozzles is reported in references 1 to 4, and the performance of an NACA-designed tail-pipe burner with a variable-area exhaust nozzle is reported in reference 5. Operational characteristics of the tail-pipe burner are also discussed."
Date:
December 29, 1950
Creator:
Johnson, LaVern A. & Meyer, Carl L.
Object Type:
Report
System:
The UNT Digital Library
Theoretical and analog studies of the effects of nonlinear stability derivatives on the longitudinal motions of an aircraft in response to step control deflections and to the influence of proportional automatic control
Through theoretical and analog results the effects of two nonlinear stability derivatives on the longitudinal motions of an aircraft have been investigated. Nonlinear functions of pitching-moment and lift coefficients with angle of attack were considered. Analog results of aircraft motions in response to step elevator deflections and to the action of the proportional control systems are presented. The occurrence of continuous hunting oscillations was predicted and demonstrated for the attitude stabilization system with proportional control for certain nonlinear pitching-moment variations and autopilot adjustments.
Date:
December 29, 1950
Creator:
Curfman, Howard J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Production and Isolation of Carrier-Free Radioisotopes
None
Date:
December 28, 1950
Creator:
Garrison, W. M. & Hamilton, J. G.
Object Type:
Report
System:
The UNT Digital Library
Flight Measurements With the Douglas D-558-II (BuAero No. 37974) Research Airplane: Measurements of Wing Loads at Mach Numbers Up to 0.87
Report presenting flight measurements of the aerodynamic wing normal force, bending moment, and pitching moment using strain gains on the D-558-II airplane at Mach numbers up to 0.87 and angles of attack up to 38 degrees. Results regarding Mach number effects and normal-force-coefficient effects are provided.
Date:
December 26, 1950
Creator:
Mayer, John P.; Valentine, George M. & Swanson, Beverly J.
Object Type:
Report
System:
The UNT Digital Library
Health_Physics Monthly Information Report
None
Date:
December 26, 1950
Creator:
Haring, M. M.
Object Type:
Report
System:
The UNT Digital Library
Investigation of a 42.7 Degree Sweptback Wing Model to Determine the Effects of Trailing-Edge Thickness on the Aileron Hinge-Moment and Flutter Characteristics at Transonic Speeds
Report presenting an investigation in the high-speed tunnel of a 42.7 degree sweptback wing model to determine the effects of aileron trailing-edge thickness on aileron hinge moments and one-degree-of-freedom aileron flutter. Results regarding the hinge-moment characteristics and free-floating characteristics are also provided.
Date:
December 26, 1950
Creator:
Thompson, Robert F.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-1125
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Construction of Subsection 3 of Section 2 of the Departmental Appropriation Bill of 1949 (H.B. 322, Acts 51st Leg., R.S. 1949, ch. 615, p. 1208).
Date:
December 24, 1950
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Interpretation of boundary-layer pressure-rake data in flow with a detached shock
From Summary: "A procedure is presented for determining boundary-layer quantities from pressure-rake data, which include the combined effects of viscous and shock losses. The problem is analyzed using schileren photographs of the shock configuration, the continuity of mass relationship, and the characteristic of the turbulent boundary layer that its outer edge is defined by a rapid change in slope in the Mach number profiles in the vicinity of the edge."
Date:
December 22, 1950
Creator:
Luidens, Roger W. & Madden, Robert T.
Object Type:
Report
System:
The UNT Digital Library
A Preliminary Experimental and Analytical Evaluation of Diborane as a Ram-Jet Fuel
Report presenting an analytical and experimental evaluation of diborane as a ram-jet fuel, which seems to offer greater flight range, thrust, and combustion stability beyond what is attainable with petroleum fuels. Results regarding ideal thrust, stability, deposits, and flight range with several blends of diborane are provided.
Date:
December 22, 1950
Creator:
Gammon, Benson E.; Genco, Russell S. & Gerstein, Melvin
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-1139
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Fiscal year appropriation from which to pay for microfilm copies of newspapers ordered for the State Library under the submitted facts.
Date:
December 22, 1950
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
DETECTION OF POSITIVE $pi$ MESONS BY $pi$$sup +$ DECAY
None
Date:
December 21, 1950
Creator:
Jakobson, M.; Schulz, A. & Steinberger, J.
Object Type:
Report
System:
The UNT Digital Library
Effect of an End Plate on the Aerodynamic Characteristics of a 20.55 Degree Sweptback Wing with an Aspect Ratio of 2.67 and a Taper Ratio of 0.5.: Transonic-Bump Method
"An investigation by the transonic-bump method conducted in the Langley high-speed 7- by 10-foot tunnel to determine the effect of an end plate on the aerodynamic characteristics of a 20.55 degree sweptback wing with an aspect ratio of 2.67 and a taper ratio of 0.5 indicated that the end plate affected the aerodynamic characteristics of the wing at transonic Mach numbers in the same manner as has been observed for swept and unswept wings at low speeds" (p. 1).
Date:
December 21, 1950
Creator:
Watson, James M.
Object Type:
Report
System:
The UNT Digital Library
Ozone and Nitrogen Oxide Production by Irradiation of Air
In regard to the production of ozone and various nitrogen oxides in air by action of x-rays or gamma rays, thre seems to be no direct experimental data which can be used. There is some data on the action of alpha particles on air and some on the action of cathode rays.
Date:
December 21, 1950
Creator:
Newton, A. S.
Object Type:
Report
System:
The UNT Digital Library
Performance of Three High-Recovery-Factor Thermocouple Probes for Room-Temperature Operation
"Thermocouple probes have been designed to measure with small error the total temperature of gas moving at high velocities. Two major designed are presented: one is applicable to the construction of rakes and the other, of which there are two variations, can be used where exceptional accuracy is desired. The probes were calibrated in two jets; one jet exhausted into the atmosphere and the other into a pressure-controlled receiver" (p. 1).
Date:
December 21, 1950
Creator:
Scadron, Marvin D.; Gettelman, Clarence C. & Pack, George J.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-1136
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Issuance of poll tax exemption certificates to persons residing in cities of 10,000 inhabitants or more who become twenty-one years of age after January 31st of the year in which they desire to vote.
Date:
December 21, 1950
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: V-1138
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Approval of maps and plats of subdivisions by cities adjacent thereto as a prerequisite to filing with the County Clerk.
Date:
December 21, 1950
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
The External-Shock Drag of Supersonic Inlets Having Subsonic Entrance Flow
Memorandum presenting a determination of the external-shock drags of supersonic inlets with circular cross sections from shadow photographs at a Mach number of 2.70 for a low-external-compression and a high-external-compression inlet. The calculated mass flow for both types of inlets showed reasonably good agreement with the measured values. Results as determined by the characteristics method and the approximate method are provided.
Date:
December 20, 1950
Creator:
Nucci, Louis M.
Object Type:
Report
System:
The UNT Digital Library