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Atomic Energy Commission Reports
490
NACA Research Memorandums
451
NACA Technical Notes
368
GJBX
200
United States Geological Survey Reports
187
NACA Technical Memorandums
125
United States Department of Energy Grand Junction Office Reports
114
Argonne National Laboratory Reports
113
NACA Wartime Reports
111
Trace elements investigations report
106
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The Shackleton-Murray SM-1 Light Airplane: A Two-Place High-Wing Monoplane
Circular presenting a description of the light airplane SM-1, which was designed by W. S. Shackleton and Lee Murray. Information regarding the design and flight characteristics and some photographs of the airplane are provided.
Date:
June 1933
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The "Avro Trainer" Airplane (British): A Training Biplane
Circular presenting a description of the Avro Trainer airplane, which is primarily intended for pilots in training and is designed to be easy to use, including large, comfortable cockpits, good view, effective windshields, and wide track. Details of the design, flight characteristics, drawings, and photographs are provided.
Date:
June 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Experiments on Drag of Revolving Disks, Cylinders and Streamline Rods at High Speeds
Report presenting an experimental investigation concerned primarily with the extension of test data on the drag of revolving disks, cylinders, and streamline rods to high Mach numbers and Reynolds numbers. The tests generally confirm earlier theories and add in some new results. One of the primary findings of interest is that skin friction does not depend on Mach number.
Date:
June 1944
Creator:
Theodorsen, Theodore & Regier, Arthur
Object Type:
Report
System:
The UNT Digital Library
Morane-Saulnier 121 Single-Seat Pursuit Airplane (French)
The M.-S. 121 is noted for it's excellent visibility inherent in the parasol design. The wings have no dihedral but a very pronounced sweep back. A description of the components, flight characteristics, performance, drawings, and photographs are provided.
Date:
June 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Finite-Element Analysis of a Thick-Wall Tube Containing a Crater-Like Surface Flaw
A three-dimensional finite-element elastic analysis is carried out for a thick-wall tube (as sued in typical LMFBR steam generators) that contains a surface flaw in the form of a paraboloid of revolution. Effects of the depth and aspect ratio of the flaw on the stress distribution and stress concentration in the tube are explored.
Date:
June 1976
Creator:
Majumdar, S.
Object Type:
Report
System:
The UNT Digital Library
Photoexcitation in Superconductors
Dissertation discussing the results of experiments to study the behavior of superconductors under light illumination.
Date:
June 1976
Creator:
Schuller, Ivan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Noise Pollution from Expressways
This paper provides an economic analysis of three noise abatement strategies designed to interrupt the path of noise between highways and residential areas, and makes some abatement policy suggestions.
Date:
June 1976
Creator:
Vaughan, Roger J. & Huckins, Larry
Object Type:
Report
System:
The UNT Digital Library
Investigation of Reactivity Anomalies in EBR-II
A data-collection and advisory team was formed to investigate observations of power reactivity decrement (PRD) and reactivity loss rate (RLR) obtained during EBR-II reactor run 74, because both the PRD and RLR were judged to be high during that run. This report describes the efforts to develop a realistic model explaining the reactivity observations for run 74 and presents recommendations for additional diagnostic information in the event of a recurrence of off-normal behavior of reactivity.
Date:
June 1976
Creator:
Walters, L. C.; Cutforth, D. C.; Forehand, H. M.; Hudman, G. D.; Larson, H. A.; MacFarlane, H. F. et al.
Object Type:
Report
System:
The UNT Digital Library
Examination and Evaluation of in-Reactor Fracture of Shroud Tubes in Mixed-Oxide Fuel Experiment X159
During disassembly and subsequent visual examinations of X159 (a Mark A-19A type of subassembly containing mixed-oxide fuel), 11 of 19 shroud tubes were found fully or partially severed. Several of the capsules within their shroud tubes were distinctly kinked at axial locations near those at which the shroud tubes were severed. The examination also disclosed that the shroud-tube fractures occurred during reactor operations.
Date:
June 1977
Creator:
Flinn, J. E.
Object Type:
Report
System:
The UNT Digital Library
Reactivity and Power Shape Control : Theory and Numerical Applications
An optimization method, based on linear programming, has been developed which determines the enrichment distribution in a multizone reactor such that the desired power distribution is achieved at BOL, as well as the poison distribution during reactor operation such that the reactor is kept critical and the desired power distribution is retained. For the numerical implementation of the method, the CYPRUS code has been written. Results of the application of the method are presented and input specifications for the use of the code are described.
Date:
June 1976
Creator:
Tzanos, Constantine P.
Object Type:
Report
System:
The UNT Digital Library
Tutorial on the Warren Abstract Machine for Computational Logic
Tutorial description of the Warren machine with a basic introduction to the motivation of the machine and the instructions that define it. Discussion of the fairly limited extensions required to extend the machine for more general use outside of implementations of logic programming. Substantial speedups will occur due to improvements in the implementation of the basic algorithms.
Date:
June 1985
Creator:
Gabriel, John R.; Lindholm, Tim; Lusk, E. L. & Overbeek, R. A.
Object Type:
Report
System:
The UNT Digital Library
A Summary on Experimental Methods for Statistical Transient Analysis of Two-Phase Gas-Liquid Flow
Much work has been done in the study of two-phase gas-liquid flows. Although it has been recognized superficially that such flows are not homogeneous in general, little attention has been paid to the inherent discreteness of the two-phase systems. Only relatively recently have fluctuating characteristics of two-phase flows been studied in detail. As a result, new experimental devices and techniques have been developed for use in measuring quantities previously ignored. This report reviews and summarizes most of these methods in an effort to emphasize the importance of the fluctuating nature of these flows and as a guide to further research in this field.
Date:
June 1976
Creator:
Delhaye, Jean-Marc & Jones, Owen C., Jr.
Object Type:
Report
System:
The UNT Digital Library
Fuel Dynamics Loss-of-Flow Test L3 : Final Report
The behavior of FTR-type, mixed-oxide, pre-irradiated, ''intermediate-power-structure'' fuel during a simulation of an FTR loss-of-flow accident was studied in the Mark-IIA integral TREAT loop. Analysis of the data reported here leads to a postulated scenario (sequence and timing) of events in the test. This scenario is presented, together with the calculated timing of events obtained by use of the SAS code.
Date:
June 1976
Creator:
Fischer, A. K.; Lo, R. K. & Barts, E. W.
Object Type:
Report
System:
The UNT Digital Library
Theory of Ionization by Electron Collisions
The problem of calculating comprehensive sets of cross sections for ionization of atoms and molecules is reviewed. Emphasis is put on targets that are already ionized and lower-energy collisions for which the incident electron must be treated on a par with target electrons. The physical circumstances are discussed in which perturbation methods should be adequate, and special investigations are recommended to identify the relevant ranges of parameters more precisely and dependably. A new R-matrix approach is outlined which should permit rather simple, approximate, but dependable calculations when the perturbation methods fail.
Date:
June 1976
Creator:
Fano, Ugo & Inokuti, Mitio
Object Type:
Report
System:
The UNT Digital Library
Advanced Fuel Cell Development Progress Report: July-September 1984
Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes studies directed toward seeking alternative cathode materials to NiO for molten carbonate fuel cells.
Date:
June 1985
Creator:
Ackerman, J. P.; Pierce, Robert Dean; Nelson, P. A. & Arons, R. M.
Object Type:
Report
System:
The UNT Digital Library
Fluid Forces on Two Circular Cylinders in Crossflow
Fluid excitation forces are measured in a water loop for two circular cylinders arranged in tandem and normal to flow. The Strouhal number and fluctuating drag and lift coefficients for both cylinders are presented for various spacings and incoming flow conditions. Results show the effects of Reynolds number, pitch ratio, and upstream turbulence on the fluid excitation forces.
Date:
June 1985
Creator:
Jendrzejczyk, J. A. & Chen, Shoei-Sheng
Object Type:
Report
System:
The UNT Digital Library
Flow-Induced Vibration of Circular Cylindrical Structures
This report summarizes the flow-induced vibration of circular cylinders in quiescent fluid, axial flow, and crossflow, and applications of the analytical methods and experimental data in design evaluation of various system components consisting of circular cylinders.
Date:
June 1985
Creator:
Chen, Shoei-Sheng
Object Type:
Report
System:
The UNT Digital Library
The Fokker "Trimotor F VII" Commercial Transport Monoplane
Directly developed from the single engined type F VII ten passenger monoplanes, the Fokker Trimotor closely follows the commercial aircraft that preceded it. It has three Wright Whirlwind air-cooled engines, rated at 200 HP each. Details of the wings, cockpit and cabin, baggage and freight compartments, controls, landing gear, characteristics, drawings, and photographs are provided.
Date:
June 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Flight Tests of Modifications to Improve the Aileron Control Characteristics of a North American XP-51 Airplane (AC No. 41-38)
Investigations were undertaken to improve the ailerons of a P-51 fighter so as to obtain greater effectiveness without increasing the stick forces. Modifications consisted of increasing the deflection range of the aileron to 70 percent and changing the original concave section to a thick section with beveled trailing edge. Results of the modified ailerons showed an increase in effectiveness over the original aileron of 70 percent at low speed and 55 percent at high speeds.
Date:
June 1942
Creator:
White, M. D. & Hoover, Herbert H.
Object Type:
Report
System:
The UNT Digital Library
An approximate spin design criterion for monoplanes
"A quantitative criterion of merit has been needed to assist airplane designers to incorporate satisfactory spinning characteristics into new designs. An approximate empirical criterion, based on the projected side area and the mass distribution of the airplane, has been formulated in a recent British report. In the present paper, the British results have been analyzed and applied to American designs. A simpler design criterion based solely on the type and the dimensions of the tail, has been developed: it is useful in a rapid estimation of whether a new design is likely to comply with the minimum requirements for safety in spinning" (p. 1).
Date:
June 1939
Creator:
Seidman, Oscar & Donlan, Charles J.
Object Type:
Report
System:
The UNT Digital Library
Wibault Two-Seat Monoplane 8C2: An All-Metal Pursuit and Observation Airplane
Michel Wibault's two seat monoplane 8C2, is similar to the Parasol pursuit monoplane which preceded it. It has no perishable parts in its structure and needs no special storage or coverings. The sample aeroplane uses a 500 HP Hispano-Suiza engine but can accept a 400-600HP engine from a variety of manufacturers with little difficulty. It uses a two blade tractor propeller.
Date:
June 1926
Creator:
Serryer, J.
Object Type:
Report
System:
The UNT Digital Library
Large-scale low-speed wind-tunnel tests of a model having a 60 degree delta horizontal canard control surface and wing to obtain static-longitudinal-stability and canard surface hinge-moment data
Report presenting a wind-tunnel investigation of a model equipped with a 60 degree delta wing and a 60 degree delta horizontal all-movable canard control surface to determine the stability, control, and canard-surface hinge-moment characteristics at low speeds and at a Reynolds number of 9 x 10(exp 6). Two longitudinal positions of the canard surface were tested. Results regarding lift and pitching moment, drag, and hinge moment are provided.
Date:
June 17, 1954
Creator:
Burrows, Dale L.
Object Type:
Report
System:
The UNT Digital Library
The Dewoitine D 33 Commercial Airplane (French): A Low-Wing Cantilever Monoplane
Circular describing the Dewoitine D 33 commercial airplane, which is a low-wing cantilever monoplane. Details of the wing, fuel tanks, fuselage, landing gear, controls, engine, characteristics, drawings, and photographs are provided.
Date:
June 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Flight Studies of the Horizontal-Tail Loads Experienced by a Fighter Airplane in Abrupt Maneuvers
Report presenting flight measurements made on a modern pursuit airplane to determine the approximate magnitude of the horizontal tail loads in accelerated flight. Pressures at a few points were used as an index of the tail loads by correlating these pressures with complete pressure-distribution data obtained in the NACA full-scale tunnel.
Date:
June 1944
Creator:
Flight Research Maneuvers Section
Object Type:
Report
System:
The UNT Digital Library