Analysis of experimental sea-level transient data and analog method of obtaining altitude response for turbine-propeller engine with relay-type speed control (open access)

Analysis of experimental sea-level transient data and analog method of obtaining altitude response for turbine-propeller engine with relay-type speed control

From Introduction: "This report shows correlation between actual transient data obtained from the engine and solutions to a simulated system set up on an analog computer. Data are presented for response of engine speed to changes in set speed when the power plant was being controlled by a relay-type electronic governor that acted to maintain set speed by varying propeller pitch. Correlation obtained for sea-level conditions between actual time data and analog solutions is discussed."
Date: May 17, 1951
Creator: Vasu, George & Pack, George J.
Object Type: Report
System: The UNT Digital Library
A semi-empirical method for calculating the pitching moment of bodies of revolution at low Mach numbers (open access)

A semi-empirical method for calculating the pitching moment of bodies of revolution at low Mach numbers

A semiempirical method, in which potential theory is arbitrarily combined with an approximate viscous theory, for calculating the aerodynamic pitching moments for bodies of revolution is presented. The method can also be used for calculating the lift and drag forces. The calculated and experimental force and moment characteristics of 15 bodies of revolution are compared.
Date: May 17, 1951
Creator: Hopkins, Edward J.
Object Type: Report
System: The UNT Digital Library
Concluding Report of Free-Spinning, Tumbling, and Recovery Characteristics of a 1/18-Scale Model of the Ryan X-13 Airplane, Coord. No. AF-199 (open access)

Concluding Report of Free-Spinning, Tumbling, and Recovery Characteristics of a 1/18-Scale Model of the Ryan X-13 Airplane, Coord. No. AF-199

"An investigation has been completed in the Langley 20-foot free-spinning tunnel on a l/18-scale model of the Ryan X-13 airplane to determine its spin, recovery, and tumbling characteristics, and to determine the minimum altitude from which a belly landing could be made in case of power failure in hovering flight. Model spin tests were conducted with and without simulated engine rotation. Tests without simulated engine rotation indicated two types of spins: one, a slightly oscillatory flat spin; and the other, a violently oscillatory spin" (p. 1).
Date: May 17, 1957
Creator: Bowman, James S., Jr.
Object Type: Report
System: The UNT Digital Library
Investigation of the possibility of simplifying missile guidance systems by the use of free-floating flaps and spring-mounted control surfaces (open access)

Investigation of the possibility of simplifying missile guidance systems by the use of free-floating flaps and spring-mounted control surfaces

Report presenting an investigation of the use of aerodynamic and mechanical devices for improving the response of guided missiles. An analysis indicates that the use of free-floating flaps and spring-mounted control surfaces should be able to increase maneuverability to the point that electronic automatic stabilization and gain-adjusting devices can be eliminated.
Date: May 17, 1956
Creator: Hikido, Katsumi; Hayashi, Paul H. & Lessing, Henry C.
Object Type: Report
System: The UNT Digital Library
Full-scale wind-tunnel tests of the longitudinal stability and control characteristics of the XV-1 convertiplane in the autorotating flight range (open access)

Full-scale wind-tunnel tests of the longitudinal stability and control characteristics of the XV-1 convertiplane in the autorotating flight range

Force and moments were measured for the XV-1 convertiplane at 75 to 150 knots. Rotor on and off and propeller powered and off configurations were investigated. The characteristics of the V-tab horizontal tail and its downwash field were studied. Lift interference between fixed wing and rotor and possible means of drag reduction were considered.
Date: May 17, 1956
Creator: Hickey, David H.
Object Type: Report
System: The UNT Digital Library
A Method of Reducing Heat Transfer to Blunt Bodies by Air Injection (open access)

A Method of Reducing Heat Transfer to Blunt Bodies by Air Injection

Report presenting investigations of the effect of air injection at the stagnation point on the heat-transfer characteristics of a hemisphere in a supersonic stream. Results regarding air injection directly into the stream and air injection tangent to surface are provided.
Date: May 17, 1956
Creator: Stalder, Jackson R. & Inouye, Mamoru
Object Type: Report
System: The UNT Digital Library
Transonic wind-tunnel measurements of static lateral and directional stability and vertical-tail loads for a model with a 45 degree sweptback wing (open access)

Transonic wind-tunnel measurements of static lateral and directional stability and vertical-tail loads for a model with a 45 degree sweptback wing

Report presenting an investigation to determine the vertical-tail loads and airplane characteristics in sideslip for a model of a swept-wing fighter-type airplane in the 16-foot transonic tunnel at a range of Mach numbers and angles of attack. Results regarding the effect of the unsealed vertical-tail root on airplane coefficients, directional and lateral stability, vertical-tail loads, effect of leading-edge chord-extensions on lateral and directional characteristics and on tail loads, and pitching moments in sideslip are provided.
Date: May 17, 1956
Creator: Hallissy, Joseph M., Jr.
Object Type: Report
System: The UNT Digital Library
Some Notes on the Violent Lateral-Longitudinal Coupling Motions of the Douglas X-3 Airplane in Aileron Rolls (open access)

Some Notes on the Violent Lateral-Longitudinal Coupling Motions of the Douglas X-3 Airplane in Aileron Rolls

Report presenting a study of the potentially large violent coupled motions encountered by the Douglas X-3 in flight. Testing indicated that the motions encountered appeared to be caused by the inclination of the principal axis below the flight path at the onset of rolling maneuvers and the existence of pitching moment due to side slip combined with a trim change near Mach number 1. Results regarding the effect of principal-axis inclination, effect of changes in directional stability, effect of pitching moment due to sideslip, effect of trim changes, and effect of roll direction are provided.
Date: May 17, 1956
Creator: Stone, Ralph W., Jr.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: WW-122 (open access)

Texas Attorney General Opinion: WW-122

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, Will Wilson, regarding a legal question submitted for clarification: Proper depository for dividend checks from stock given State Parks Board for maintenance of Varner-Hogg State Park.
Date: May 17, 1957
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: WW-133 (open access)

Texas Attorney General Opinion: WW-133

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, Will Wilson, regarding a legal question submitted for clarification: Benefit eligibility conditions for receipt of unemployment compensation by employee under subsection 4(e) of the Texas Unemployment Compensation Act, codified as Article 5221b-2(e), Vernon's Annotated Civil Statutes.
Date: May 17, 1957
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: WW-97 (open access)

Texas Attorney General Opinion: WW-97

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, Will Wilson, regarding a legal question submitted for clarification: Is the State Board of Water Engineers, under the State laws required to approve watershed plans and the design and specifications for individual structures in the plan?
Date: May 17, 1957
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
PRELIMINARY ANALYSIS OF SUPERCHARGED NUCLEAR RAMJET PROPULSION SYSTEM (open access)

PRELIMINARY ANALYSIS OF SUPERCHARGED NUCLEAR RAMJET PROPULSION SYSTEM

A preliminary analysis has been made to compare the performance.of a ceramic ramjet reactor powerplant, such as described in General Electric Report No. XDC-56-5-81, with that of such a powerplant supercharged by a metallic-vapor-cycle compressor jet. Performance at sea level, Mach 2.5 is ·reported for the vapor-cycle compressor jet alone, for the ramjet alone, and for the compressor jet - ramjet combination. Results indicate that adding the compressor-jet as a supercharger for the ramjet provides an increase in specific thrust of about 20 percent over that of the ramjet alone, with an attendant increase in thermal efficiency of about 20 percent over that of the ramjet alone.
Date: May 17, 1957
Creator: Boppart, J. A.
Object Type: Report
System: The UNT Digital Library
Aluminum Canning of Nickel-Plated, Hanford Four-Inch Uranium Fuel Slugs by Hot-Pressing (open access)

Aluminum Canning of Nickel-Plated, Hanford Four-Inch Uranium Fuel Slugs by Hot-Pressing

Conditions of time, temperature, and pressure for hotpress bonding of aluminum-nickel and uranium-nickel disks were determined experimentally. A process for jacketing Hanford four-inch slugs, coated with nonporous nickel electroplates, in aluminum cans by cold-sizing and hot-pressing was developed and conditions of time, temperature, and pressure required for the actual canning process were determined. (auth)
Date: May 17, 1955
Creator: Sumsion, H. T.; Beck, C. J. & DeLuca, L. S.
Object Type: Report
System: The UNT Digital Library
Corrosion of Stainless Steel in Concentrated Unh Solutions: Trip Report. Project C-362 (open access)

Corrosion of Stainless Steel in Concentrated Unh Solutions: Trip Report. Project C-362

It is concluded that austenitic stainless steels in the fully solution- heat-treated state will give satisfactory service in concentrated UNH solutions. (M.H.R)
Date: May 17, 1951
Creator: Frame, J. M. & Fox, J. M., Jr.
Object Type: Report
System: The UNT Digital Library
WORLD-WIDE FALLOUT FROM OPERATION CASTLE (open access)

WORLD-WIDE FALLOUT FROM OPERATION CASTLE

A world-wide network of gummed film stations was established to monitor fall-out following Operation Castle. Although meteorological data were poor, a general connection of tropospheric flow patterns with observed fall-out was evident. There was a tendency for debris to remain in tropical latitudes, with incursions into the temperate regions associated with meteorological disturbances of the predominantly zonal flow. As the season advanced, such incursions became more evident. Outside of the tropics, the southwestern United States received the greatest total fall-out, about five times that received in Japan. The maximum fall-out on any day at an individual station in the United States, correeted to sampling day, was 200,000 d/m/ft/sup 2/. It is concluded that the probability of early fall-out in inhabited regions would be reduced by holding Pacific test series in the winter months. (auth)
Date: May 17, 1955
Creator: List, R.J.
Object Type: Report
System: The UNT Digital Library
The Irradiance Dependency of Exposure Time as a Factor in Determining the Severity of Radiant Thermal Burns (open access)

The Irradiance Dependency of Exposure Time as a Factor in Determining the Severity of Radiant Thermal Burns

None
Date: May 17, 1956
Creator: Hinshaw, J. R.
Object Type: Report
System: The UNT Digital Library
Recommended Practices for Uranium Finishing (open access)

Recommended Practices for Uranium Finishing

None
Date: May 17, 1951
Creator: Harris, William B.
Object Type: Report
System: The UNT Digital Library
Refractive Index Measurements (open access)

Refractive Index Measurements

Report summarizing physical studies on Redox solutions and metal waste solutions, including refractometric investigations.
Date: May 17, 1950
Creator: Burger, L. L.
Object Type: Report
System: The UNT Digital Library
Removal of cesium from uranium recovery process wastes (open access)

Removal of cesium from uranium recovery process wastes

The Uranium Recovery Process (TBP Process) at Hanford extracts and decontaminates uranium from the Metal Waste produced in the Bismuth Phosphate Process. Aqueous waste, approximately equal in volume to that of the Metal Waste itself, results from the process. Although of several years' age, these wastes are still sufficiently radioactive that they must be returned to underground tanks for storage. For several years aqueous wastes of low radioactive content have been discharged to ground at Hanford. Polyvalent cations are strongly absorbed by the soil. Monovalent cations are poorly absorbed if present in solutions of high salt content. Ground waters migrate toward the Columbia River very slowly. These observations point out the desirability of removing, from wastes to be cribbed, those long-lived radioactive constituents which are poorly absorbed by soil. Cesium (Cs-137) and strontium (Sr-90) are the principal constituents of Hanford wastes which possess these characteristics. Strontium, while more hazardous biologically, is of somewhat less concern than cesium because it is better absorbed from high-salt solutions by soils. This report describes research done to develop on inexpensive process for the removal of fission products, especially cesium, from Uranium Recovery Process Wastes. 4 refs., 13 tabs.
Date: May 17, 1954
Creator: Burns, R. E.; Brandt, R. L. & Clifford, W. E.
Object Type: Report
System: The UNT Digital Library
Uranium blending (open access)

Uranium blending

None
Date: May 17, 1954
Creator: Smith, A. E.
Object Type: Report
System: The UNT Digital Library
Process development review (open access)

Process development review

This report discusses process development programs to be reviewed at the Savannah River Laboratory. The review will include reactor and metallurgical process development programs and chemical processing development programs.
Date: May 17, 1955
Creator: Evans, L. C.
Object Type: Report
System: The UNT Digital Library

Photogeologic map of the Kaiparowits Peak-1 quadrangle, Garfield County, Utah

Photogeologic map of the Kaiparowits Peak-1 quadrangle, Garfield County, Utah
Date: May 17, 1955
Creator: Detterman, Janis S.
Object Type: Map
System: The UNT Digital Library
{{{title}}} metadc1254011 (open access)

{{{title}}} metadc1254011

The absorption of the important fission products by plants is quantitatively presented as a concentration factor which is defined as the ratio of the fission product concentration found in the leaves to the fission product concentration found in the nutrient substrate. Of the fission products, the isotopes of strontium were found to be the most important by virtue of their high concentration factor, long half-life, and low maximum permissible amounts for animals. Iodine and barium follow in importance, with cesium moderately important in some soils. All other fission products have concentration factors less than strontium by 100 or more. The effect on the concentration factor of different agricultural plants, as well as different organs of the same plant, causes variations of about a factor of ten or less for each isotope. The concentration factor tends to increase as the pH of the nutrient substrate is decreased. Addition of stable carrier to the substrate does not decrease the amount of the radioactive isotope that is absorbed into the plant. The presence of iodine and yttrium carrier actually causes a significant increase in the concentration of the respective radioactive isotopes in the plant tissue.
Date: May 17, 1955
Creator: Rediske, J. H.; Cline, J. F. & Selders, A. A.
Object Type: Report
System: The UNT Digital Library