Report presenting an investigation of the effects of distributed surface roughness, consisting of lathe-tool marks, on the skin-friction drag of a body of revolution at Mach number 1.61. Tests were conducted on ogive-cylinders at zero angle of attack over a range of roughness and Reynolds number. The results indicate that the effects of surface roughness are generally similar to those found at subsonic speeds.

Report of an investigation using three rocket-propelled delta-wing-body combinations for a range of Mach numbers to determine the damping-in-pitch characteristics. All models were statically stable but dynamically unstable at transonic speeds. Information about trim, lift, and drag is also provided.

Report presenting an experimental investigation in a 16-inch ram-jet engine to examine the degree to which inlet flow pulsations influence the combustion efficiency and lean blow-out limit of a ram-jet combustor.

Report presenting an investigation to determine the normal force of two three-blade NACA propellers and the agreement of the measured normal force with a theoretical method. Propeller thrust and normal force were measured for a variety of blade angles, angles of attack, and Mach numbers. Results regarding variation with thrust, effect of inclination, and a comparison with theory are provided.

Report presenting the results of force and moment tests at Mach numbers from 3.0 to 6.3 on bodies of revolution of fineness ratios from 5 to 10 and on flat-bottom bodies of fineness ratio 10 along with theoretical predictions for these bodies. Testing included eight cone and cone-cylinder models, six nose-cylinder models, and three flat-bottom bodies.

Memorandum presenting two-spool matching procedures which may be employed to analyze turbojet, turboprop, and stationary power plants. The procedures were applied to obtain the sea-level static equilibrium performance of a simple two-spool turbojet engine in which the compressor and turbine performances were based on experimental results. Results regarding engine performance at sea-level static conditions, component performance, and effect of compressor-discharge bleed are provided.

This report brings together an extensive accumulation of material replacement (danger coefficient) data for the various oralloy critical assemblies at Pajarito. Corresponding values of effective absorption and transport cross sections are derived. In certain favorable cases, inelastic scattering contributions to the effective absorption cross sections are estimated. Special applications of material replacement data include computation of the relationship between oralloy critical mass and concentration of a diluent and hydrogen isotopic analysis of heavy water and heavy polythene.

Report discussing a study revolving around montroseite and paramontroseite. This report is divided into several sections: source of the data, determination of the crystal structure of paramontroseite, refinement of the montroseite and paramontroseite structures by the method of least squares, structural features of the two, solid state alteration of montroseite, and other examples of solid state alteration phenomena.

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Report presenting an investigation in the stability tunnel of the use of spoilers for obtaining static longitudinal stability of a model of a canard missile in reverse flight. Results indicated that stable pitching-moment slopes can be obtained at angles of attack up to 11 degrees in the low speed range of the tests, but further investigation of high subsonic speeds will be necessary.

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Report discussing experiments to evaluate ion sources for possible use in a thermonuclear reactor.

The non-project literature concerning the chemistry of vanadium has been summarized through November, 1952. The report is presented in terms of izo- and heteropoly vanadates and cationic forms of pentavalent vanadium, complexes of di-, tri-, and pentavalent vanadium, and oxidation potentials of various vanadium systems. A bibliography of 93 references is included.

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A description is given of the die designs, dry boxes, loading cans, vacuum pots, and other experimental equipment used for fabricating hollow fuel slugs from uranium metal powder. The details of equipment operation are also given, including the die lubrication, die loading, pressing, and inspection procedures. (auth)

Report presenting an investigation on a canard ramjet missile configuration to determine its lift and drag characteristics at low values of lift. Two rocket-boosted models that differed only in the size and deflection of the canard were used. Information about the trim lift characteristics, drag, and stability is provided.

A report discussing the determination of the size or areal extent of orebodies disclosed by drilling and by exploration underground.

This report is a statement of progress during a six-months period and gives the principal unclassified information developed in that period about investigations of radioactive materials in the United States and Alaska, and to a minor extent in foreign countries.

Report discussing the results of core drilling in the Mendenhall Area of Harding County, South Dakota. This drilling was aimed at collecting data regarding uranium-bearing lignite. The report provides information regarding drilling operations, stratigraphy of the area, structure, and lignite deposits.

A report regarding the results of core drilling for uranium-bearing lignite, Mendenhall area, Harding County, South Dakota. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

This study summarizes work by the Industrial Hygiene Unit of the penetration by ruthenium compounds of certain respirator filters and canisters used at the 202-S facility at the Hanford Engineer Works. (JL)

From introduction: "This report covers the development of nondestructive techniques for measuring quantitatively: (1) thickness of electrodeposited-nickel diffusion barriers, and (2) thickness of aluminum cladding on flat-plate fuel elements."

A short review of the field of internal conversions. Isomeric transitions teach us many details of nuclear structure. In these studies electromagnetic theory is considered as a "tool". It is a quite quantitative tool in the case of "internal conversion" - a phenomenon which has been widely studied for many years. Internal conversion takes place in competition with γ-ray emission: a fraction of the nuclei in excited states decay by γ-ray emission, the remaining fraction by transferring the energy to K, or L, etc. electrons in the atomic shell. Thus the lifetime of an excited nuclear state depends on the internal conversion coefficient. As internal conversion must be expected to depend on the details of the electronic environment, the lifetime of an isomeric state depends on the state of chemical combination of the isomer - as was recently shown explicitly in one case, that of Te-99m(6hr.).