UNT Libraries Government Documents Department - 27 Matching Results

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Stability and Control Flight Tests of a Vertically Rising Airplane Model Similar to the Lockheed XFV-1 Airplane

Description: From Summary: "This paper presents the results of an investigation of the dynamic stability and controllability of a model which approximately represents the Lockheed XFV-1 airplane to a 1/8 scale. The investigation consisted of hovering flights in still air at a considerable height above the ground, hovering flights very close to the ground, vertical take-offs and landings, flights through the transition range from hovering to normal forward flight, and sideways translational flights."
Date: October 13, 1954
Creator: Kirby, Robert H.
Item Type: Refine your search to only Report
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Stabilization of 50-Percent Magnesium - JP-4 Slurries With Some Aluminum Soaps of C(Sub 8) Acids

Description: Report presenting an exploratory investigation of three aluminum disoaps of C(sub 8) acids to determine the gelling properties and stabilizing ability in slurries of 50 percent magnesium power and JP-4 fuel. All of the soaps were found to gel the slurries satisfactorily and to exhibit adequate reproducibility of gel properties. Results regarding the soap behaviors, effects of temperature, viscosity, and formation of the gel structures are provided.
Date: May 13, 1954
Creator: Caves, Robert M.
Item Type: Refine your search to only Report
open access

Ignition of Ammonia and Mixed Oxides of Nitrogen in 200-Pound-Thrust Rocket Engines at 160 Degrees F

Description: Memorandum presenting a study of the ignition of ammonia and mixed oxides of nitrogen at 160 degrees Fahrenheit made with and without fuel additives utilizing small-scale rocket engines of approximately 200 pounds thrust. All experiments were conducted at sea-level pressures except two at a range of pressure altitudes. Results regarding the use of lithium as a catalyst, calcium as a catalyst, and no apparent catalyst are provided.
Date: May 13, 1954
Creator: Hennings, Glen; Ladanyi, Dezso J. & Enders, John H.
Item Type: Refine your search to only Report
open access

Forced-convection heat-transfer and pressure-drop characteristics of a closely spaced wire matrix

Description: Memorandum presenting an investigation of the forced-convection heat-transfer and pressure-drop characteristics of a staggered closely spaced 0.020-inch wire metal-to-air heat exchanger. Eight wire banks were electrically heated, and the range of variables included bulk Reynolds numbers based on wire diameter and maximum velocity, from 82 to 1900, average wire temperatures up to 1109 degrees R, and heat flux densities up to 84,000 Btu per hour per square foot.
Date: August 13, 1954
Creator: Gedeon, Louis & Grele, Milton D.
Item Type: Refine your search to only Report
open access

Angle-of-attack-supersonic performance of a configuration consisting of a ramp-type scoop inlet located either on top or bottom of a body of revolution

Description: From Introduction: "In reference 1, in which the performance of conical supersonic scoop inlets on circular fuselages is reported, the drag of the bottom-inlet configuration was considerably higher than for the top inlet."
Date: May 13, 1954
Creator: Kremzier, Emil J. & Campbell, Robert C.
Item Type: Refine your search to only Report
open access

Experimental performance of liquid fluorine-liquid ammonia propellant combination in 1000-pound-thrust rocket engines

Description: "The performance of liquid fluorine and liquid ammonia as a propellant combination was evaluated in 1000-pound-thrust rocket engines operated at a chamber pressure of 600 pounds per square inch absolute. Values of specific impulse, characteristic velocity, thrust coefficient, and heat rejection were obtained as functions of propellant mixture ratio for each of four injectors: a triplet, a showerhead, and two like-on-like types" (p. 1).
Date: May 13, 1954
Creator: Douglass, Howard W.
Item Type: Refine your search to only Report
open access

Wind-tunnel investigation at low speed of the yawing stability derivatives of a 1/10-scale model of the Douglas A4D-1 airplane: TED No. NACA DE 389

Description: Report presenting an experimental investigation to determine the low-speed yawing stability derivatives of a model of the Douglas A4D-1 airplane. The model was tested in clean and landing configurations with horizontal and vertical tails on and off. Results are provided without analysis.
Date: September 13, 1954
Creator: Wolhart, Walter D. & Fletcher, H. S.
Item Type: Refine your search to only Report
open access

Performance characteristics of several short annular diffusers for turbojet engine afterburners

Description: Report presenting a study of four short annular diffusers with different diffuser passage area variations and with various combinations of straightening vanes, vortex generators, splitters, and boundary layer suction for flow control. Results regarding turbine discharge whirl, diffuser passage modification, and boundary layer control are provided.
Date: May 13, 1954
Creator: Mallett, William E. & Harp, James L., Jr.
Item Type: Refine your search to only Report
open access

Performance of wedge-type boundary layer diverters for side inlets at supersonic speeds

Description: Report presenting an experimental investigation to determine the effect of several wedge-type boundary-layer diverters on drag and inlet pressure recovery in the 8- by 6-foot supersonic wind tunnel at Mach numbers of 1.5, 1.8, and 2.0. The model consisted of two rectangular ramp-type inlets mounted on the NACA RM-10 body of revolution. Results regarding variation of inlet pressure recovery and configuration drag with inlet mass-flow ratio, changes in the shock pattern off the inlet ramp, pressu… more
Date: May 13, 1954
Creator: Campbell, Robert C. & Kremzier, Emil J.
Item Type: Refine your search to only Report
open access

Airborne Reconnaissance in Southwestern Arkansas

Description: Introduction: Reconnaissance for uranium in central and southwestern Arkansas was carried out as a joint project of the U.S. Atomic energy Commission and the U.S. Geological Survey during March and May 1954. The project was planned as an investigation of several areas of known abnormal radioactivity, and as a search for others, by airborne and ground radiometric reconnaissance.
Date: December 13, 1954
Creator: Malan, R. C. & Nash, A. L.
Item Type: Refine your search to only Report
open access

Behavior, a Balanced Network of Chemical Transformations(Biokinetics)

Description: While the concept of a biological system as a balanced network of chemical transformations is not a new one, experimental definition of specific systems has been lacking. This paper defines theoretically and experimentally a number of such networks and their behavior and response to some limited environmental changes.
Date: January 13, 1954
Creator: Bradley, D.F. & Calvin, M.
Item Type: Refine your search to only Report
open access

Reconnaissance of Red Rock Valley, Apache County, Arizona

Description: Abstract: Reconnaissance of Red Rock Valley was begun on December 10, 1953, and completed on February 11, 1954. The mines in the region were investigated and all exposures of Salt Wash were walked. Paleostream directions and alterations of the sandstones were observed and recorded on a base map. No important new mineralization was discovered-and the area is considered to be of no commercial significance if judged by the outcrops alone. However, a vast amount of Salt Wash lies at slight depth di… more
Date: July 13, 1954
Creator: Hanshaw, Bruce B.
Item Type: Refine your search to only Report
open access

MEETING XVI -- BEVATRON RESEARCH CONFERENCE -- BEVATRON OPERATION

Description: The occurrence of a fault April 7 caused a short in the stator winding of one of the main generators. Repairs will require at least one month and the total time the generator will be down can be determined only after a further inspection of the damage. In a week or two, after a thorough inspection of the generator and the ignitron system, Bevatron operation will be continued on one generator. Since the targets of use in a Bevatron experiment will depend greatly on the nature of the experiment a… more
Date: April 13, 1954
Creator: Lofgren, E.J.
Item Type: Refine your search to only Report
open access

Studies of Graphite for Fuel Elements

Description: Improved graphites for use in fuel elements were developed from artificial graphites and phenolic resins. These materials are particularly well suited for fuelelement preparation. The resins do not soften during baking, so bodies hold their shape and show good dimensional uniformity. The physical properties of graphite were obtained without heating at "graphitizing" temperatures, which would be detrimental to UO/sub 2/ or other inclusions of nuclear fuel. High densities and bending strengths, v… more
Date: October 13, 1954
Creator: Loch, L. D.; Slyh, J. A. & Duckworth, W. H.
Item Type: Refine your search to only Report
open access

Slug and tube factors

Description: A common and useful assumption is that the front-to-rear power distribution is a shortened cosine curve. This fact led to the calculation of slug factors'' for the longer charges to be used at K-Pile. It is hoped that the publication of these numbers will save time and prevent duplication of effort by those concerned in any way with slug power, surface temperatures, reactivity effects, etc. For the sake of completeness, slug factors for the older piles are included. Another useful ideal is that… more
Date: May 13, 1954
Creator: Moon, M.R. & Brugge, R.O.
Item Type: Refine your search to only Report
open access

Proposed alternate dissolving flowsheets for the Redox plant

Description: Current operation of the Redox plant dissolvers results in evolution of ammonia during the slug jacket removal step. Staggering the schedules of the dissolving cycles of the three dissolvers is being practiced at present to prevent the formation of ammonium nitrate crystals in the stack gases, but this procedure limits the dissolver capacity. Steps are being taken to provide ammonia scrubbers for the dissolvers to eliminate this need for close scheduling of dissolving operations. It has been pr… more
Date: August 13, 1954
Creator: Curtis, M. H. & Harmon, M. K.
Item Type: Refine your search to only Report
open access

Redox contamination: Terminal status report

Description: The Redox ruthenium contamination problem has two distinct phases; the environs contamination as a result of stack emissions, and the in-canyon contamination which controls time and cost factors for plant maintenance. On stack emissions, the probability of serious environs contamination exists so long as the batch-type, permanganate headend ruthenium volatilization process is used. Knowledge of the characteristics of volatilized ruthenium is not adequate today to give complete assurance that th… more
Date: July 13, 1954
Creator: Anderson, C. R.
Item Type: Refine your search to only Report
open access

Reactivity Temperature Coefficient of High Exposure Fuel

Description: The presence of large amounts of plutonium in high exposure uranium will give rise to a large, positive, graphite reactivity, temperature coefficient. This will create control problems in normal operation and also in the event of loss of cooling. Some general suggestions are given for the solution of these problems. The magnitude of the coefficient is probably known within ± 25% at present and a program is planned to reduce this uncertainty. The uncertainty is of minor importance in the operati… more
Date: December 13, 1954
Creator: Gast, P. F.
Item Type: Refine your search to only Report
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