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[Portrait of Lucas Äco]

Description: Photograph of Lucas Äco, a performer from the 1940s. This portrait of Lucas Äco is mounted on board with the inscription on back: Lucas Äco of Orson Welle's "Around the World." Lucas Äco was Fakir in the performance.
Date: [1946-05-31..1946-08-03]
Creator: Tripp, Clarence A.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Flutter and oscillating air-force calculations for an airfoil in two-dimensional supersonic flow

Description: A connected account is given of the Possio theory of non-stationary flow for small disturbances in a two-dimensional supersonic flow and of its application to the determination of the aerodynamic forces on an oscillating airfoil. Further application is made to the problem of wing flutter in the degrees of freedom - torsion, bending, and aileron rotations. Numerical tables for flutter calculations are provided for various values of the Mach number greater than unity. Results for bending-torsion … more
Date: May 29, 1946
Creator: Garrick, I. E. & Rubinow, S. I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Reduction of Uranyl Ion

Description: From introduction: "Due to the hydrogen overvoltage at the surface of a mercury cathode, uranium solutions is hydrochloric acid may be reduced not only to the tetravalent state, but until considerable trivalent uranium is formed. Other metallic ions act as oxidation-reduction catalysts as well as being reduced themselves. The following paper is a study of the various reactions taking place in solution and at the surface of the cathode."
Date: May 27, 1946
Creator: Nichols, Ambrose R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The future of atomic energy

Description: There is definitely a technical possibility that atomic power may gradually develop into one of the principal sources of useful power. If this expectation will prove correct, great advantages can be expected to come from the fact that the weight of the fuel is almost negligible. This feature may be particularly valuable for making power available to regions of difficult access and far from deposits of coal. It also may prove a great asset in mobile power units for example in a power plant for s… more
Date: May 27, 1946
Creator: Fermi, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Preparation of High-Purity Beryllium Oxide

Description: Abstract. A method for the preparation of beryllium oxide of high purity is presented. Beryllium basic acetate (BeO-3Be(C2H3O2)2) is prepared from the metal or a convenient salt, a chloroform solution of this material extracted with redistilled water, the dried basic acetate distilled in a quartz apparatus, and this purified material converted to the oxide by fuming down with sulfuric acid and igniting at 1000 degrees C. Impurities detectable spectrographically were reduced to a very low leve… more
Date: May 27, 1946
Creator: Tomkins, F. S.; Cressman, G. W. & Tolmach, L. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thin Oblique Airfoils at Supersonic Speed

Description: "The well-known methods of thin-airfoil theory have been extended to oblique or sweptback airfoils of finite aspect ratio moving at supersonic speeds. The cases considered thus far are symmetrical airfoils at zero lift having plan forms bounded by straight lines. Because of the conical form of the elementary flow fields, the results are comparable in simplicity to the results of the two-dimensional thin-airfoil theory for subsonic speeds" (p. 267).
Date: May 23, 1946
Creator: Jones, Robert T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Production of U₂₃₄ by a Modified Calutron

Description: Abstract: Three and nine-tenths milligrams of U234 have been produced using a Calutron. A Beta-size Calutron was modified to produce complete resolution of the U234 beam from the U235 beam. With Beta charge the U234 current was 4 microamperes. The samples were collected upon flat pieces of graphite bent to fit the E curve.
Date: May 21, 1946
Creator: McKinney, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

100 Areas: (For Technical Progress Letter No. 97), May 7--13

Description: Physics information for the D and F piles is presented. Thermal conductivity, reactivity, and irradiation levels are included. Concerning the cooling systems: process water control, pressure drip studies, purging studies, corrosion, and gun barrel clearance of expanded graphite are discussed. (GHH)
Date: May 17, 1946
Creator: Jordan, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Compressibility at High Subsonic Velocities on the Lifting Force Acting on an Elliptic Cylinder

Description: An extended form of the Ackeret iteration method, applicable to arbitrary profiles, is utilized to calculate the compressible flow at high subsonic velocities past an elliptic cylinder. The angle of attack to the direction of the undisturbed stream is small and the circulation is fixed by the Kutta condition at the trailing end of the major axis. The expression for the lifting force on the elliptic cylinder is derived and shows a first-step improvement of the Prandtl-Glauert rule. It is further… more
Date: May 16, 1946
Creator: Kaplan, Carl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Deposition of Plutonium and Certain Fission Products in Bone as a Decontamination Problem

Description: The following report discusses the deposition of radioactive elements during a nuclear fission in the skeleton. Studies are concerned with chronic effects of toxic radiation developing within the bone marrow and decontaminating the cells.
Date: May 15, 1946
Creator: Copp, D. Harold; Greenberg, David M. & Hamilton, Joseph G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preparation of Be7 Without Inert Carrier

Description: After bombardment with deuterons, Li metal was dissolved with dilute acid. From this solution Be7 was precipitated as Be(CH)2 on Fe carrier using NH4CH. The contaminates remained in the filtrate. After repeated precipitations in the presence of appropriate holdback carriers, the Fe was extracted with iso-propyl ether, leaving the pure Be7 solution.
Date: May 10, 1946
Creator: Jacobson, L. & Overstreet, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-altitude flight cooling investigation of a radial air-cooled engine

Description: "An investigation of the cooling of an 18-cylinder, twin-row, radial, air-cooled engine in a high-performance pursuit airplane has been conducted for variable engine and flight conditions at altitudes ranging from 5000 to 35,000 feet in order to provide a basis for predicting high-altitude cooling performance from sea-level or low altitude experimental results. The engine cooling data obtained were analyzed by the usual NACA cooling-correlation method wherein cylinder-head and cylinder-barrel t… more
Date: May 9, 1946
Creator: Manganiello, Eugene J.; Valerino, Michael F. & Bell, E. Barton
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Production test 105-2-P (Supplement A) - Activity of pile discharge water (Activation of manganese and iron)

Description: This report discusses the Production Test 105-2-P (Supplement A) -- Activity of Pile Discharge Water. Previous studies of pile discharge water have shown that one of two processes is responsible for the large but variable amount of Mn{sup 56} activity present in the water. One process is the production of Mn{sup 56} by the reaction Mn{sup 55} on manganese impurity in the water. The amount of such impurity has been shown to be too small to produce the observed amount of Mn{sup 56} unless the mea… more
Date: May 8, 1946
Creator: West, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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