A General Integral Form of the Boundary-Layer Equation for Incompressible Flow With an Application to the Calculation of the Separation Point of Turbulent Boundary Layers (open access)

A General Integral Form of the Boundary-Layer Equation for Incompressible Flow With an Application to the Calculation of the Separation Point of Turbulent Boundary Layers

"A general integral form of the boundary-layer equation, valid for either laminar or turbulent incompressible boundary-layer flow, is derived. By using the experimental finding that all velocity profiles of the turbulent boundary layer form essentially a single-parameter family, the general equation is changed to an equation for the space rate of change of the velocity-profile shape parameter. The lack of precise knowledge concerning the surface shear and the distribution of the shearing stress across turbulent boundary layers prevented the attainment of a reliable method for calculating the behavior of turbulent boundary layers" (p. 1067).
Date: May 22, 1950
Creator: Tetervin, Neal & Lin, Chia Chiao
Object Type: Report
System: The UNT Digital Library
Investigation of Performance of Axial-Flow Compressor of XT-46 Turbine-Propeller Engine 1 - Preliminary Investigation at 50-,70-, and 100-Percent Design Equivalent Speed (open access)

Investigation of Performance of Axial-Flow Compressor of XT-46 Turbine-Propeller Engine 1 - Preliminary Investigation at 50-,70-, and 100-Percent Design Equivalent Speed

From Summary: "An investigation is being conducted to determine the performance of the 12-stage axial-flow compressor of the XT-46 turbine-propeller engine. This compressor was designed to produce a pressure ratio of 9 at an adiabatic efficiency of 0.86. The design pressure ratios per stage were considerably greater than any employed in current aircraft gas-turbine engines using this type of compressor. The compressor performance was evaluated at two stations."
Date: May 22, 1950
Creator: Creagh, John W. R. & Sandercock, Donald M.
Object Type: Report
System: The UNT Digital Library
Investigation of stage performance of X24C-2 ten-stage axial-flow compressor at design speed (open access)

Investigation of stage performance of X24C-2 ten-stage axial-flow compressor at design speed

The stage performance of the X24C-2 axial-flow compressor, as determined from radial distributions of total pressure and temperature measured in each stator-blade row, was investigated at design speed at weight flows corresponding to those of the maximum weight-flow, peak-efficiency, and surge points. The stage performance is presented as the measured stage pressure ratios and the calculated velocity diagrams. The average stage total-pressure ratio at the surge operating condition in the first stage was approximately 1.10; in the second stage, approximately 1.13; and in all remaining stages, approximately constant at a value of 1.15. Regions of inefficient flow are discussed so as to point out the reasons for the poor flow conditions.
Date: May 22, 1950
Creator: Finger, Harold B.; Cohen, Leo & Stewart, Warner L.
Object Type: Report
System: The UNT Digital Library
Oralloy Hydride Critical Assemblies (open access)

Oralloy Hydride Critical Assemblies

Part I of this report covers critical-mass determinations for pseudospheres of oralloy hydride composition (approximating UH3) in 8"-thick Tu and Ni tampers and in the Tu tamper with Ni liner. The critical mass of a hydride cube in the thick Tu also is given. Data on weight and dimensional changes of hydride pieces during the period of use are included. In Part II are presented the results of Rossi time-scale measurements on the hydride assemblies. Values of alpha at delayed critical and its variation with mass in the neighborhood of delayed critical are given. Measurements on the activation of various detectors within the hydride assemblies are described in Part III. Results as a function of radial position are given for Au, for Au shielded by Au and by Cd, for S and for fission catchers with U235 and U238. Reactivity changes resulting from the introduction of foreign materials into the hydride assemblies are discussed in Part IV. Apparent regularities with respect to Z and qualitative interpretations of variations with radius are pointed out. From data for various radial positions, changes in critical mass corresponding to small changes in composition and density are computed.
Date: May 22, 1950
Creator: Paxton, Hugh Campbell; Orndoff, John D. & Linenberger, G. A. (Gustave Aaron)
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: WW-626 (open access)

Texas Attorney General Opinion: WW-626

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: Classification for inheritance tax purposes of alleged adopted child.
Date: May 20, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Flight Measurements With the Douglas D-558-II (BuAero No. 37974) Research Airplane: Static Lateral and Directional Stability Characteristics as Measured in Sideslips at Mach Numbers Up to 0.87 (open access)

Flight Measurements With the Douglas D-558-II (BuAero No. 37974) Research Airplane: Static Lateral and Directional Stability Characteristics as Measured in Sideslips at Mach Numbers Up to 0.87

Report presenting flight measurements in sideslips of the static lateral and directional stability characteristics of the Douglas D-558-II airplane. It is part of an investigation to determine the stability and control characteristics and aerodynamic loads acting on the wing and horizontal tail of an airplane from stalling speed up to a maximum Mach number of 0.90. Results regarding variations of rudder, total aileron, elevator control positions and control forces, aileron position, and aerodynamic hinge moments are provided.
Date: May 19, 1950
Creator: Sjoberg, S. A.
Object Type: Report
System: The UNT Digital Library
Interim Memorandum Report on Filter Development and Discussion on Availability of Materials (open access)

Interim Memorandum Report on Filter Development and Discussion on Availability of Materials

None
Date: May 19, 1950
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Wind-tunnel investigation at low speed to determine aerodynamic properties of a jettisonable nose section with circular cross section (open access)

Wind-tunnel investigation at low speed to determine aerodynamic properties of a jettisonable nose section with circular cross section

Report presenting the aerodynamic properties of a model of a jettisonable nose section with a circular cross section as determined at low speed from an investigation in the 20-foot free-spinning tunnel. The results indicated that the aerodynamic characteristics of the nose were greatly affected by proximity to the fuselage. Even for a stabilized nose, it may be necessary to eject the nose forward forcibly in order to prevent high accelerations along the backbone of the pilot.
Date: May 19, 1950
Creator: Goodwin, Roscoe H.
Object Type: Report
System: The UNT Digital Library
Ditching Tests With a 1/16-Size Model of the Navy XP2V-1 Airplane at the Langley Tank No. 2 Monorail (open access)

Ditching Tests With a 1/16-Size Model of the Navy XP2V-1 Airplane at the Langley Tank No. 2 Monorail

Report discussing tests using a model of the Navy XP2V-1 to study its performance when ditched. From Summary: "Various landing attitudes, speeds, and conditions of damage were simulated. The performance of the model was determined and recorded from visual observations, by recording time histories of the longitudinal decelerations, and by taking motion pictures of the ditchings."
Date: May 18, 1950
Creator: Fisher, Lloyd J. & Tarshis, Robert P.
Object Type: Report
System: The UNT Digital Library
Pressure Distributions on the Blade Sections of the NACA 10-(0)(066)-03 Propeller Under Operating Conditions (open access)

Pressure Distributions on the Blade Sections of the NACA 10-(0)(066)-03 Propeller Under Operating Conditions

The fifth report in a series of five that present unanalyzed pressure data obtained in tests of five full-scale propellers with NACA 16-series blade sections. Pressure distributions on the blade sections were measured under operating conditions to determine the aerodynamic characteristics of each blade section. This particular report presents information for nine radial stations of the NACA 10-(0)(066)-03 propeller.
Date: May 18, 1950
Creator: Steinberg, Seymour & Milling, Robert W.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: V-1061 (open access)

Texas Attorney General Opinion: V-1061

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: Judicial retirement, including assignment and compensation of retired Judges selected for active trial court duties.
Date: May 18, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
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
Texas Attorney General Opinion: V-1059 (open access)

Texas Attorney General Opinion: V-1059

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 salary of the court reporter of the 6th Judicial District comprised of Fannin and Lamar Counties.
Date: May 16, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: V-1060 (open access)

Texas Attorney General Opinion: V-1060

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: Procedure for designating underground water reservoirs pursuant to Article 7880-3c, V. C. S.
Date: May 16, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Corrosion of Stellite in Redox Streams (open access)

Corrosion of Stellite in Redox Streams

The following report provides results from laboratory tests on the corrosion resistance of various types of stellite facings on astenitic stainless steel T-347 to Redox streams.
Date: May 15, 1950
Creator: Koenig, W. W.
Object Type: Report
System: The UNT Digital Library
DEVELOPMENT REPORT FOR ELECTROLYTIC CELL (open access)

DEVELOPMENT REPORT FOR ELECTROLYTIC CELL

The objective of this project was to remove impurities in the form of PbO/sub 2/ from a HNO/sub 3/ solution by electrolysis. This electrolytic cell must process up to a 15-gal. batch in a minimum of time. It is desirable that the impurity remaining after processing be less than 20 ppm. Construction and operation of the cell are described. (G.Y.)
Date: May 15, 1950
Creator: Williams, C.G. & Peterson, G.R.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: V-1056 (open access)

Texas Attorney General Opinion: V-1056

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 legality of paying the travel expense of State employed doctors and nurses attending schools and clinics.
Date: May 15, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: V-1057 (open access)

Texas Attorney General Opinion: V-1057

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 authority of counties to use an excess of the State tax remission, over the annual bond retirement requirements, to build and maintain farm-to-market roads.
Date: May 15, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: V-1058 (open access)

Texas Attorney General Opinion: V-1058

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 validity of delinquent tax foreclosure sales by a Constable under the submitted facts.
Date: May 15, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: V-1054 (open access)

Texas Attorney General Opinion: V-1054

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 validity of a contract for revaluation of property within Grand Prairie Independent School District, in reconsideration of Opinion No. V-966.
Date: May 13, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: V-1055 (open access)

Texas Attorney General Opinion: V-1055

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 extent of the present term of the District Judge, 128th Judicial District, in view of the recent change of this court from a temporary to a permanent status.
Date: May 13, 1950
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Flight Investigation of Longitudinal Stability and Control Characteristics and Stalling Characteristics of a C-54D Airplane (open access)

Flight Investigation of Longitudinal Stability and Control Characteristics and Stalling Characteristics of a C-54D Airplane

Report presenting the flying qualities of a C-54D airplane measured as a preliminary to an investigation to determine the necessity of additions or revisions to flying-quality requirements in view of the problems associated with making instrument approaches to low altitudes. Results regarding control friction, dynamic longitudinal stability, static longitudinal stability, maneuvering stability, take-off and landing characteristics, effectiveness of the trim tabs, trim changes, and stalling characteristics are provided.
Date: May 12, 1950
Creator: Talmage, Donald B.; Reeder, John P. & Matthews, Ruth G.
Object Type: Report
System: The UNT Digital Library
Calculated Performance of Nuclear Turbojet Powered Airplane at Flight Mach Number of 0.9 (open access)

Calculated Performance of Nuclear Turbojet Powered Airplane at Flight Mach Number of 0.9

"An analysis was made at flight Mach number of 0.9 to estimate performance of nuclear-energy-powered turbojet engine and optimum engine operating conditions and to determine gross weight and load-carrying capacity of airplane powered by such an engine. The size of airplane required to carry disposable load of 20,000 pounds was found to vary from approximately 300,000 to 900,000 pounds depending on assumptions. For a reactor tube-wall mean temperature of 2500 degrees R, turbine-inlet temperature of 2000 degrees R, reactor-free-flow-area ratio of 0.33, reactor-shielding-material specific gravity of 6.0, shielding thickness of 3.0 feet, and altitude of 30,000 feet, the airplane gross weight required to carry a 20,000 payload is 545,000 pounds" (p. 1).
Date: May 11, 1950
Creator: Doyle, Ronald B.
Object Type: Report
System: The UNT Digital Library
High-Subsonic Performance Characteristics and Boundary-Layer Investigations of a 12 10-Inch-Inlet-Diameter Conical Diffuser (open access)

High-Subsonic Performance Characteristics and Boundary-Layer Investigations of a 12 10-Inch-Inlet-Diameter Conical Diffuser

Performance and boundary-layer data were taken in a 12 degree 10-inch inlet-diameter conical diffuser of 2:1 exit- to inlet-area ratio. These data were taken for two inlet-boundary-layer conditions. The first condition was that of a thinner inlet boundary later (boundary-layer displacement thickness, delta* approximately equal to 0.034) produced by an inlet section approximately 1 inlet diameter in length between the entrance bell and the diffuser. The second condition was a thicker inlet boundary layer (delta* approximately equal to 0.120) produced by an additional inlet section length of approximately 6 diameters. Longitudinal static-pressure distributions were measured fro wall static orifices. Transverse total- and static-pressure surveys were made at the inlet and exit stations. Boundary-layer velocity distributions were measured at seven stations between the inlet and exit. These data were obtained for a Reynolds number (based on inlet diameter) range of 1 x 10(exp 6) to 3.9 x 10(exp 6). The corresponding Mach number range was from M = 0.2 to choking. At the maximum-power-available condition supersonic flow was obtained as far as 4.5 inches downstream from the diffuser inlet with a maximum Mach number of M approximately equal to 1.5. The total-pressure loss through the diffuser in percentage of inlet dynamic …
Date: May 11, 1950
Creator: Little, B. H., Jr. & Wilbur, Stafford W.
Object Type: Report
System: The UNT Digital Library