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Technical Report Archive and Image Library
472
National Advisory Committee for Aeronautics Collection
380
Texas Attorney General Opinions
191
Office of Scientific & Technical Information Technical Reports
91
TRAIL Microcard Collection
61
Government Documents A to Z Digitization Project
25
World War Two Collection
24
World War Two Newsmaps
18
Texas State Publications
14
Government Documents General Collection
6
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824 Matching Results
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The aerodynamic characteristics throughout the subsonic speed range of a thin, sharp-edged horizontal tail of aspect ratio 4 equipped with a constant-chord elevator
From Introduction: "Recent investigations have indicated several wing plan forms, wing sections, and wing-body-tail combinations suitable for flight at supersonic speeds. One such lifting surface, a thin, sharp-edged without sweep of aspect ratio 4 and taper ratio 0.5, has been the subject of an investigation in the Ames 12-foot pressure wind tunnel. The aim of the investigation was to determine the aerodynamic characteristics of such a wing plan form throughout the range of subsonic Mach numbers up to 0.94."
Date:
June 30, 1949
Creator:
Bandettini, Angelo & Reed, Verlin D.
Object Type:
Report
System:
The UNT Digital Library
Final Report: The Separation of Zirconium and Hafnium
From summary: "Petrographic, X-ray, and analytical studies were made on synthetic and natural zirconium minerals containing varying amounts of hafnium."
Date:
June 30, 1949
Creator:
Shea, James F.
Object Type:
Report
System:
The UNT Digital Library
The Path of Carbon in Photosynthesis VI.
This paper is a compilation of the essential results of our experimental work in the determination of the path of carbon in photosynthesis. There are discussions of the dark fixation of photosynthesis and methods of separation and identification including paper chromatography and radioautography. The definition of the path of carbon in photosynthesis by the distribution of radioactivity Within the compounds is described.
Date:
June 30, 1949
Creator:
Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Report of the Instrument and Mechanical Development Department on Remote Controls Systems and Optical System for the Maintenance Crane: Job 15
From Foreword: "The program described herein proposed the use of a traveling bridge crane with fixed position, totally enclosed cab, as a means for maintaining and repairing the canyon area of a chemical process plant handling highly radioactive solutions."
Date:
June 30, 1949
Creator:
Kellex Corporation
Object Type:
Report
System:
The UNT Digital Library
Report of the Instrument and Mechanical Development Department on Remotely Operated Connectors
Development of pipe and electrical connector design appropriate to the unusual maintenance and operating conditions of the Redox Process is described. (K.S.)
Date:
June 30, 1949
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Atomic Displacements Produced by Fission Fragments and Fission Neutrons in Matter
About four-fifths of the energy of the fission process is shared by the two heavy fragments into which the nucleus splits. This energy, of about 80 Mev. per fragment, is transferred to the medium in which the fission takes place in two ways. First, because each fragment is stripped of about half of its electrons during most of its path, it will interact strongly with electrons and thus lose energy through ionizing collisions with other atoms. Secondly, the fragments will lose energy by elastic collisions with atoms as a whole. Each fragment leaves in its wake a cloud of moving electrons and atoms. This cloud will roughly resemble a cylinder whose radius will increase with time on account of the motion of the struck electrons and atoms. They may now investigate two features of the slowing down process. First as it affects the fragment, i.e. we calculate its range, straggling, etc. And secondly they may work out the motion of the cylinder of moving particles, its effect on the medium, etc.
Date:
June 29, 1949
Creator:
Ozeroff, J.
Object Type:
Report
System:
The UNT Digital Library
Determination of Organic Acids in Process Solutions
Abstract: "A method has been established for the estimation of volatile organic acids in aqueous process solutions containing UNH, nitric acid, ANN, sodium dichromate and small amounts of hexone. The practice is to distill a 400 ul or 500 ul sample in the presence of an excess of phosphoric acid and ferrous sulfate under a high vacuum; a special apparatus utilizing a receiver cooled with a dry ice-isopropanol mixture is employed. The distillate is taken up in isopropanol and then titrated potentiometrically with standard potassium hydroxide solution. Since nitric acid and organic acids are present, two end points are observed. The potassium hydroxide added between these end points is equivalent to the organic acids. In the titration, CO2 from the atmosphere or in the potassium hydroxide is a source of error. The former was avoided and correction was made for the latter."
Date:
June 29, 1949
Creator:
Brouns, R. J. & Pollock, C. W.
Object Type:
Report
System:
The UNT Digital Library
Events of importance for week ending June 29, 1949, Hanford Operations Office, Richland, Washington
This report details events of importance as reported by the Hanford Operations Office for the week ending June 29, 1949.
Date:
June 29, 1949
Creator:
Schlemmer, F. C.
Object Type:
Report
System:
The UNT Digital Library
Experimental determination of the subsonic performance of a ram-jet unit containing thin-plate burners
Report presenting the performance of a ramjet unit consisting of an intake diffuser, an exhaust nozzle, and a cluster of thin-plate burners contained in a semicircular combustion chamber as investigated in the induction aerodynamics laboratory.
Date:
June 29, 1949
Creator:
Henry, John R.
Object Type:
Report
System:
The UNT Digital Library
Bare Beryllium Extrusion Using Graphite Introductory Cones
The following document describes the process of rare beryllium extrusion using graphite introductory cones with the purpose of finding a lubricant which would decrease excessive friction between the billet and prose parts.
Date:
June 28, 1949
Creator:
Arnold, Samuel V.
Object Type:
Report
System:
The UNT Digital Library
Effects of Mach number and sweep on the damping-in-roll characteristics of wings of aspect ratio 4
An investigation of the damping-in-roll characteristics of three wings with an aspect ratio of 4, a taper ratio of 0.6, three sweep angles at the quarter chord line, and the NACA 65A006 section as determined through a range of Mach numbers and angles of attack.
Date:
June 27, 1949
Creator:
Kuhn, Richard E. & Myers, Boyd C., II
Object Type:
Report
System:
The UNT Digital Library
The reversibility theorem for thin airfoils in subsonic and supersonic flow
A method introduced by Munk is extended to prove that the light-curve slope of thin wings in either subsonic flow or supersonic flow is the same when the direction of flight of the wing is reversed. It is also shown that the wing reversal does not change the thickness drag, damping-in-roll parameter or the damping-in-pitch parameter.
Date:
June 26, 1949
Creator:
Brown, Clinton E.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-849
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: The eligibility of a married woman under 21 years of age to be a notary public.
Date:
June 25, 1949
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Carbon deposition from AN-F-58 fuels in a J33 single combustor
Report presenting an investigation using a single combustor from a 4600-pound-thrust turbojet engine to determine the amount of carbon deposition of AN-F-58 fuels and the effect of carbon formations in the combustor on the altitude operational limits. Three fuel blends conforming to AN-F-58 specification were prepared in order to determine the influence of boiling temperature and of aromatic content on carbon deposition. Results regarding carbon deposition and effect of carbon formations on altitude operational limits are provided.
Date:
June 24, 1949
Creator:
Wear, Jerrold D. & Douglass, Howard W.
Object Type:
Report
System:
The UNT Digital Library
Free-Spinning-Tunnel Investigation of a 1/20-Scale Model of the McDonnell XF2H-1 Airplane
A spin-recovery investigation has been conducted in the Langley 20-foot free-spinning tunnel on a 20-scale model modified to represent the McDonnell XF2H-1 airplane. The project included tests both with tip tanks installed and with the tanks removed. The results indicated that the recovery characteristics of the airplane would be satisfactory for all loadings by normal recovery technique (full reversal of the rudder, followed 1/2 turn later by movement of the elevator down). The rudder pedal and the elevator stick forces likely to be encountered in a spin should be within the capabilities of the pilot.
Date:
June 24, 1949
Creator:
Berman, Theodore
Object Type:
Report
System:
The UNT Digital Library
[Office of Hanford Directed Operations events of importance for week ending June 22, 1949]
This report details events of importance reported by Hanford Operations Office for the week ending June 22, 1949.
Date:
June 24, 1949
Creator:
Shaw, D. F.
Object Type:
Report
System:
The UNT Digital Library
Wind-tunnel investigation of a tailless triangular-wing fighter aircraft at Mach numbers from 0.5 to 1.5
Report presenting a wind-tunnel investigation to determine the respective variations with Mach number of the static longitudinal stability, the drag, and the effectiveness of a constant-chord control surface for a tailless fighter aircraft with a triangular wing of aspect ratio 2.31.
Date:
June 24, 1949
Creator:
Lawrence, Leslie F. & Summers, James L.
Object Type:
Report
System:
The UNT Digital Library
Heat Transfer from High-Temperature Surfaces to Fluids. 3 - Correlation of Heat-Transfer Data for Air Flowing in Silicon Carbide Tube with Rounded Entrance, Inside Diameter of 3/4 Inch, and Effective Length of 12 Inches
"A heat-transfer investigation was conducted with air flowing through an electrically heated silicon carbide tube with a rounded entrance, an inside diameter of 3/4 inch, and an effective heat-transfer length of 12 inches over a range of Reynolds numbers up to 300,000 and a range of average inside-tube-wall temperature up to 2500 R. The highest corresponding local outside-tube-wall temperature was 3010 R. Correlation of the heat-transfer data using the conventional Nueselt relation wherein physical properties of the fluid were evaluated at average bulk temperature resulted in a separation of data with tube-wall-temperature level" (p. 1).
Date:
June 23, 1949
Creator:
Sams, Eldon W. & Desmon, Leland G.
Object Type:
Report
System:
The UNT Digital Library
Heat Transfer from High-Temperature Surfaces to Fluids 3 - Correlation of Heat-Transfer Data for Air Flowing in Silicon Carbide Tube with Rounded Entrance, Inside Diameter of 3/4 Inch, and Effective Length of 12 Inches
A heat-transfer investigation was conducted with air flowing through an electrically heated silicon carbide tube with a rounded entrance, an inside diameter of 3/4 inch, and effective heat-transfer length of 12 inches over a range of Reynolds numbers up to 300,000 and a range of average inside-tube-wall temperatures up to 2500 R. The highest corresponding local outside-tube-wall temperature was 3010 R.
Date:
June 23, 1949
Creator:
Sams, Eldon W. & Desmon, Leland G.
Object Type:
Report
System:
The UNT Digital Library
Redox Committee: Conference notes and recommendations, meeting of June 23, 1949
Topics discussed include gang valve substitute devices; cost of lining cell bottom with stainless steel; and the pump development program. [The Redox plant used a reduction-oxidation process for fuel separation that allowed recovery of uranium as well as plutonium for the first time. It succeeded earlier plants (T and B) that had used methods based on the bismuth phosphate process that recovered only plutonium.]
Date:
June 23, 1949
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Analyses of Decay Curves of Irradiated Plastics
The following report covers the results of a general program that was conducted at the Oak Ridge National Laboratory to investigate the effects on plastic materials of exposure to radiation in the pile. In the investigation, several plastics were irradiated, and on removal from the pile, their rates of decay were determined by measurement of gamma activity in an ionization chamber.
Date:
June 22, 1949
Creator:
Saleeby, R. N.; Cheshire, J. R. & Jensen, W. P.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-847
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: Whether under H.B. 808 (1) Federal rent control will be terminated and (2) cities and towns may establish emergency rent control within their limits.
Date:
June 22, 1949
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
The Effect of Span and Deflection of Split Flaps and Leading-Edge Roughness on the Longitudinal Stability and Gliding Characteristics of a 42 Degree Sweptback Wing Equipped With Leading-Edge Flaps
Report discussing the effect of half-span and full-span split flaps through a deflection range on the low-speed, longitudinal characteristics of a sweptback wing with a round-nose, extensible leading-edge flap. Information about the effect of split-flap deflection on lift and stalling characteristics, effect of split flaps on gliding characteristics, and effect of leading-edge roughness on longitudinal stability is presented.
Date:
June 21, 1949
Creator:
Pratt, George L. & Bollech, Thomas V.
Object Type:
Report
System:
The UNT Digital Library
Redox : Analytical Research Group Report [for] March and April 1949
Report discussing the results of research conducted by the Hanford Works Analytical Research Group during the period from March 1949 to April 1949.
Date:
June 21, 1949
Creator:
Schmidt, H. R.
Object Type:
Report
System:
The UNT Digital Library