UNT Libraries Government Documents Department - 96 Matching Results

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Activity of fission products as a function of decay time, and relationship to the TBP process

Description: Fission product distribution, fission product activities, and decontamination factors are terms of general usage in the Chemical Development Section. Specific values for some of these terms have been based upon data procured several years ago. In many cases more accurate basic numbers are now available. This report sets forth in tabular form detailed information on fission product activities as a function of decay time for certain conditions. It attempts to quality the use of the theoretical cu… more
Date: February 27, 1950
Creator: Schwennesen, J. L.
Item Type: Refine your search to only Report
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Aerodynamic characteristics of a wing with quarter-chord line swept back 60 degrees, aspect ratio 2, taper ratio 0.6, and NACA 65A006 airfoil section : transonic bump method

Description: From Introduction: "This paper presents the results of the investigation of the wing-alone and wing-fuselage configurations employing a wing with the quarter-chord line swept back 60^o, aspect ratio 2, taper ratio 0.6, and an NACA 65A006 airfoil section parallel to the free stream."
Date: February 24, 1950
Creator: Myers, Boyd C., II & King, Thomas J., Jr.
Item Type: Refine your search to only Report
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Aerodynamic Investigation of a Parabolic Body of Revolution at Mach Number of 1.92 and Some Effects of an Annular Jet Exhausting From the Base

Description: Report discussing an investigation of a parabolic body of revolution with and without the effects of an annular jet exhausting from the base. The aerodynamic characteristics, pressures, lift-curve slope, and other characteristics with the jet in operation and inoperative were compared.
Date: February 8, 1950
Creator: Love, Eugene S.
Item Type: Refine your search to only Report
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Analytical Investigation of Propeller Efficiency at High Subsonic Flight Speeds near Mach Number Unity

Description: From Introduction: "Tests have recently been conducted in the Langley 8-foot high-speed tunnel (reference 1) to study the effects of changes in operating advance ratio, blade plan form, blade-section thickness, section camber, and other variables on the on the propeller characteristics in the transonic-speed range. The method in reference 2, which evaluated the profile drag losses and the induced losses seperately, is followed in this paper. The method as presented offers the general prediction… more
Date: February 13, 1950
Creator: Gilman, Jean, Jr.; Crigler, John L. & McLean, F. Edward
Item Type: Refine your search to only Report
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The Boundary Layers in Fluids with Little Friction

Description: "The vortices forming in flowing water behind solid bodies are not represented correctly by the solution of the potential theory nor by Helmholtz's jets. Potential theory is unable to satisfy the condition that the water adheres at the wetted bodies, and its solutions of the fundamental hydrodynamic equations are at variance with the observation that the flow separates from the body at a certain point and sends forth a highly turbulent boundary layer into the free flow. Helmholtz's theory attem… more
Date: February 1950
Creator: Blasius, H.
Item Type: Refine your search to only Report
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Charts of Airplane Acceleration Ratio for Gusts of Arbitrary Shape

Description: "The equation of vertical motion for an airplane in gusty air is simplified in order that its solution is a function of only two parameters, namely, the mass parameter of the airplane and the shape of the gust the airplane is penetrating. The solutions of the equation are presented in the form of charts that can be used for estimating rapidly and easily the acceleration ratios encountered by airplanes with different mass parameters penetrating a sharp-edge gust, a gust of arbitrary shape, or a … more
Date: February 1950
Creator: Mazelsky, Bernard
Item Type: Refine your search to only Report
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CHEMICAL PROPERTIES OF BERKELIUM

Description: The recent production by Thompson, Ghiorso, and Seaborg of a radioactive isotope of berkelium (atomic number 97) makes it possible to investigate the chemical properties of this transuranium element by means of the tracer technique. This isotope has been prepared through the bombardment of Am{sup 241} with about 35 Mev helium ions in the 60-inch cyclotron of the Crocker Laboratory and is believed to have the mass number 243, or possibly 244. This Bk{sup 243} has a half-life of 4.6 hours and dec… more
Date: February 24, 1950
Creator: Thompson, Stanley G. & Seaborg, Glenn T.
Item Type: Refine your search to only Report
open access

Comparative Foaming Characteristics of Aeronautical Lubricating Oils

Description: Note presenting comparative data on the volume of foam and stability of foams of aeronautical lubricating oils produced at 100 degrees Celsius by the air-bubbling method. All of the data were obtained with the same foam meter, by a standard technique, and at various rates of air flow. Results regarding the reproducibility of foam tests and treatment of data are provided.
Date: February 1950
Creator: Woods, W. W. & Robinson, J. V.
Item Type: Refine your search to only Report
open access

Compressive Properties of Titanium Sheet at Elevated Temperatures

Description: "Results are presented of compressive stress-strain tests of titanium sheet at temperatures from room temperature up to 800 degrees Fahrenheit, exposure times of 1/2 to 2 hours, and strain rates of 0.002 to 0.006 per minute. The results show that titanium has favorable compressive properties, comparable to those in tension, up through 800 degrees Fahrenheit. Marked anisotropy in compression was also noted" (p. 1).
Date: February 1950
Creator: Barrett, Paul F.
Item Type: Refine your search to only Report
open access

Correlation of laboratory smoke test with carbon deposition in turbojet combustors

Description: Report presenting a correlation of carbon deposition of 19 fuels in a turbojet combustor as a function of the boiling point and of the flame height at the sooting point of the fuels in a simple wick lamp for a particular combustor operating at a single set of conditions. Two similar investigations with different combustors, operating conditions, and nine different fuels yielded similar correlations on the same graph.
Date: February 3, 1950
Creator: Busch, Arthur M.
Item Type: Refine your search to only Report
open access

Determination of the Rate of Roll of Pilotless Aircraft Research Models by Means of Polarized Radio Waves

Description: Note presenting a method for determining the rate of roll of free-flight aerodynamic models by means of polarized radio waves. The discussion shows that through the use of the technique, the direction of roll, as well as zero roll, is uniquely determined. Analysis of the data obtained and data accuracy are discussed and examples are given to show how the record-reduction method affects the accuracy of the data.
Date: February 1950
Creator: Harris, Orville R.
Item Type: Refine your search to only Report
open access

The Determination of Total Plutonium in the Presence of Aluminum

Description: Introduction: "The adoption of aluminum nitrate as salting agent in the Redox process made it imperative that a method be available for determining plutonium in the presence of aluminum. However, large amounts of aluminum have been found to interfere with the determination of plutonium by the lanthanum fluoride procedure. Previous attempts to increase the accuracy of the lanthanum fluoride method, by precipitating LaF3 from 4 M HF (rather than 2 M), have been successful only when the initial pl… more
Date: February 10, 1950
Creator: Burns, R. E. & Barton, G. B.
Item Type: Refine your search to only Report
open access

The effect of aspect ratio on the subsonic aerodynamic characteristics of wings with NACA 65(sub 1)-210 sections

Description: Report presenting the results of tests of four model wings of aspect ratios 1, 2, 4, and 6 and with NACA 65(sub 1)-210 sections. The experimental lift-curve slope is compared with predictions from theory. Results regarding lift, drag, and pitching moment, lift-curve slope, drag divergence, minimum drag, and pitching moment are provided.
Date: February 3, 1950
Creator: Nelson, Warren H. & Erickson, Albert L.
Item Type: Refine your search to only Report
open access

Effect of Radiation on Television Equipment : Final Report

Description: The following report follows a test with the purpose of determining the effect upon image fidelity by exposing a television camera to high intensity radiation over an extended period. Provided later in the report are notes on the design of the utiliscope camera used for these tests due to notable design features.
Date: February 7, 1950
Creator: White, H. J.
Item Type: Refine your search to only Report
open access

Effect of tunnel configuration and testing technique on cascade performance

Description: Report presenting an investigation to determine the influence of aspect ratio, boundary-layer control by means of slots and porous surfaces, Reynolds number, and tunnel end-wall condition on the performance of airfoils in cascade. A representative compressor-blade section of three aspect ratios has been tested at low speeds in cascades with solid and porous side walls.
Date: February 1950
Creator: Erwin, John R. & Emery, James C.
Item Type: Refine your search to only Report
open access

Effect of Valve Overlap and Compression Ratio on Variation of Measured Performance With Exhaust Pressure of Aircraft Cylinder and on Computed Performance of Compound Power Plant

Description: Note presenting an investigation conducted on an aircraft liquid-cooled single-cylinder test engine equipped with direct fuel injection to determine the effect of valve overlap and compression ratio on variation of engine power and specific fuel consumption with exhaust pressure. Results regarding the experimental engine data and compound-power-plant performance are provided.
Date: February 1950
Creator: Eian, Carroll S.
Item Type: Refine your search to only Report
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