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142
Congressional Research Service Reports
94
Technical Report Archive and Image Library
25
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21
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13
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2
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285 Matching Results
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The drag of airplane wheels, wheel fairings, and landing gears 2: nonretractable and partly retractable landing gears
This is the second report giving the results obtained in the NACA 20-foot wind tunnel on the drag due to landing gears. The present report gives the results of tests of nonretractable and partly retractable landing gears intended for heavier low-wing monoplanes of the transport and bomber type.
Date:
June 21, 1934
Creator:
Biermann, David & Herrnstein, William H., Jr.
System:
The UNT Digital Library
Chemical Research -- U233 Production and Extraction; Report for the Month Ending June 21, 1943
Abstract. The precipitation of Pa233 with MnO2 from a solution of thorium nitrate has been studied in some detail and seems quite satisfactory up to 36 gm Th(HO3)4 4H2O per 100 cc solution. The concentration of Pa233 with respect to the manganese dioxide carrier and the thorium precipitated with the carrier appears to be accomplished quite well by either a series of MnO2 cycles or thorium iodate cycles. Volatility methods for both the separation of Pa233 from the original thorium and for its separation from MnO2 are now under investigation. It has been decided that thorium carbonate will the the thorium compound used in the pile at Site X.
Date:
June 21, 1943
Creator:
Franck, J.
System:
The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 102), June 11--June 17
Operation of the D and F Piles is reported. Other items reported are: general; water, corrosion and engineering (graphite expansion).
Date:
June 21, 1946
Creator:
Jordan, W. E.
System:
The UNT Digital Library
Effect of X Irradiation on the Maturation of the Circulating Reticulocyte
This report studies the effect of x irradiation on the maturation of the circulating reticulocytes, using samples of rabbit blood with and without phenylhydresine- or bleeding-induced anemia and comparing them to the blood of human subjects under similar circumstances.
Date:
June 21, 1948
Creator:
Gaston, Evelyn O. & Jacobson, Leon O.
System:
The UNT Digital Library
Equations for the Design of Two-Dimensional Supersonic Nozzles
Memorandum presenting equations for obtaining the wall coordinates of two-dimensional supersonic nozzles. The equations are based on the application of the method of characteristics to irrotational flow of perfect gases in channels. A brief discussion of characteristics as applied to nozzle design is given to assist in understanding and applying the nozzle-design method of the report.
Date:
June 21, 1948
Creator:
Pinkel, I. Irving
System:
The UNT Digital Library
General Engineering and Consulting Laboratory "Hot Service" Turbine Pump Progress Report: May 1 to June 15, 1948
Introduction: "This report covers progress on the testing of the General Engineering and Consulting Laboratories Turbine Pump No. 1 from May 1, 1948 to Jun 15, 1948. All testing prior to April 30, 1948 has been described in Redox Experiment Testing Report No. 1 (Document HW-9474) and No. 2 (Document HW-9694)."
Date:
June 21, 1948
Creator:
Stringer, J. T. & Allen, A. W.
System:
The UNT Digital Library
Investigation of wing characteristics at a Mach number of 1.53 3: unswept wings of differing aspect ratio and taper ratio
Report presenting testing of seven models that from two different wing series: a series of taper ratio 0.5 and differing aspect ratio and a series of aspect ratio 4 and differing taper ratio. Measurements of lift, drag, and pitching moment were made at Mach number 1.53. The aerodynamic parameters generally varied with aspect ratio and taper ratio in the manner indicated by the linear theory.
Date:
June 21, 1948
Creator:
Nielsen, Jack N.; Matteson, Frederick H. & Vincenti, Walter G.
System:
The UNT Digital Library
Meeting with NEPA Group at Lexington
None
Date:
June 21, 1948
Creator:
Cooley, W. C.
System:
The UNT Digital Library
NACA: University Conference on Aerodynamics: A Compilation of the Papers Presented
This document contains reproductions of the technical papers presented at the NACA - University Conference on Aerodynamics held at the Langley Aeronautical Laboratory on June 21, 22, and 23, 1948. The conference was held in recognition of the difficulties, imposed by security restrictions, in keeping abreast of the rapid advances in aerodynamics. The papers were prepared to review the status of a number of fields of interest, to summarize the more important wartime advances that are no longer classified, and to orient reference material for further study.
Date:
1948-06-21/1948-06-23
Creator:
unknown
System:
The UNT Digital Library
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.
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.
System:
The UNT Digital Library
Two-dimensional compressible flow in centrifugal compressors with straight blades
"Six numerical examples are presented for steady, two-dimensional, compressible, nonviscous flow in centrifugal compressors with thin straight blades, the center lines of which generate the surface of a right circular cone when rotated about the axis of the compressor. A seventh example is presented for incompressible flow. The solutions were obtained in a region of the compressors, including the impeller tip, that was considered to be unaffected by the diffuser vanes or by the impeller-inlet configuration" (p. 141).
Date:
June 21, 1949
Creator:
Stanitz, John D. & Ellis, Gaylord O.
System:
The UNT Digital Library
Hanford Works Monthly Report: May 1951
This is a progress report of the production reactors on the Hanford Reservation for the month of May 1951. This report takes each division (e.g., manufacturing, medical, accounting, occupational safety, security, reactor operations, etc.) of the site and summarizes its accomplishments and employee relations for that month.
Date:
June 21, 1951
Creator:
Prout, G. R.
System:
The UNT Digital Library
Analysis of Factors Affecting Selection and Design of Air-Cooled Single-Stage Turbines for Turbojet Engines 2: Analytical Techniques
Memorandum presenting computation methods for analyzing turbojet-engine performance for a series of air-cooled nonafterburning and afterburning engines where all the engine components are simultaneously aerodynamically limited. The coolant-flow ratio was arbitrarily assigned so that the results of the analysis can be applied to any specific air-cooled blade configurations.
Date:
June 21, 1954
Creator:
Rossbach, Richard J.
System:
The UNT Digital Library
Effect of immersed surfaces in combustion zone on efficiency and stability of 5-inch diameter ram-jet combustor
Report presenting an extension of previous work on immersed surfaces in the combustion zone of a ramjet engine. The primary focus was to determine the effect of combustion efficiency and stability of blades located within the immediate wake of a V-gutter flame holder and to find some location and orientation of blades for optimum combustion efficiency and improved stability limits with a minimum of pressure loss.
Date:
June 21, 1954
Creator:
Reynolds, Thaine W. & Male, Donald W.
System:
The UNT Digital Library
Effect of Nozzle Contour on Drag of Parabolic Afterbodies
Memorandum presenting an investigation of the effect of nozzle internal contour on afterbody drag in the 8- by 6-foot supersonic wind tunnel. Five different nozzle-afterbody configurations were evaluated. Results regarding the boattail pressure drag, base drag, and total drag are provided.
Date:
June 21, 1954
Creator:
Vargo, Donald J. & Englert, Gerald W.
System:
The UNT Digital Library
A Wind-Tunnel Investigation of the Use of Spoilers for Obtaining Static Longitudinal Stability of a Canard-Missile Model in Reverse Flight
Report presenting an investigation in the stability tunnel of the use of spoilers for obtaining static longitudinal stability of a model of a canard missile in reverse flight. Results indicated that stable pitching-moment slopes can be obtained at angles of attack up to 11 degrees in the low speed range of the tests, but further investigation of high subsonic speeds will be necessary.
Date:
June 21, 1954
Creator:
Fletcher, Herman S.
System:
The UNT Digital Library
An Integrated Miniature Solvent Extraction System for Processing Radioactive Solutions
Abstract: "Because of the radiation hazards inherent in processing large volumes of radioactive solutions by solvent extraction techniques, there is need for a system with small hold-up which can be contained within a minimum of shielding and yet which is versatile enough to be used as a research tool. A system utilizing a miniature mixer-settler has been constructed and its successful operation by remote means demonstrated. The unit is semiportable and employs a number of novel features of value in studying a wide variety of solvent extraction flowsheets. Data on the distribution of nitric acid between water and tributyl phosphate (in kerosene) are included as a demonstration of the operability of the unit."
Date:
June 21, 1955
Creator:
Bloom, Justin L.
System:
The UNT Digital Library
Meteorological Problems Associated With Commercial Turbojet-Aircraft Operation
Memorandum presenting an analysis and evaluation of the meteorological requirements and problems anticipated with the operation of commercial turbojet aircraft. Discussions concerning problems of temperature, wind, pressure, ceiling, visibility, cloud and clear-air turbulence, icing, and communication are included in this study.
Date:
June 21, 1955
Creator:
Working Group of the NACA Subcommittee on Meteorological Problems
System:
The UNT Digital Library
THERMAL ANNEALING KINETICS OF INTERLAYER SPACING DAMAGE IN IRRADIATED GRAPHITE
None
Date:
June 21, 1955
Creator:
Nightingale, R.E.
System:
The UNT Digital Library
Thermal Annealing Kinetics of Interlayer Spacing Damage in Irradiated Graphite
The primary objective of this work is to add to the understanding of irradiated graphite. This report describes an experimental technique whereby changes in crystal lattice parameter may be studied as a function of time at constant temperature. The results given here are limited to changes in the C₀ spacing for a typical sample of irradiated graphite in the temperature range 100 to 750 C.
Date:
June 21, 1955
Creator:
Nightingale, R. E.
System:
The UNT Digital Library
Velocity Distributions Measured in the Slipstream of Eight-Blade and Six-Blade Dual-Rotating Propellers at Zero Advance
Report presenting an investigation of NACA 8.75-(5)(05)-037 eight- and six-blade dual-rotating propellers under static conditions. The slipstream-boundary cone angle was found to agree with the theoretical angle of spread for an unheated jet. Results regarding the longitudinal survey, stationary survey, effect of blade angle, nature of flow near propeller, and effect of blade angle on slipstream rotation are provided.
Date:
June 21, 1955
Creator:
Salters, Leland B., Jr.
System:
The UNT Digital Library
DETECTION OF DENSITY CHANGES IN ThO$sub 2$ SLURRY
None
Date:
June 21, 1956
Creator:
Gilfillan, D.R.
System:
The UNT Digital Library
Hanford Atomic Products Operation monthly report for May 1956
This document presents a summary of work and progress at the Hanford Engineer Works for May, 1956. The report is divided into sections by department. A plant wide general summary is included at the beginning of the report, after which the departmental summaries begin. The Manufacturing department reports plant statistics, and summaries for the Metal Preparation, Reactor and Separation sections. The Engineering Department`s section summarizes work for the Technical, Design, and Project Sections. Costs for the various departments are presented in the financial Department`s summary. The Medical, Radiological Sciences, Utilities and General Services, Employee and Public Relations, and Community Real Estate and Services departments have sections presenting their monthly statistics, work, progress, and summaries.
Date:
June 21, 1956
Creator:
unknown
System:
The UNT Digital Library