A report about a new uranium mineral from the Fuemrol No. 2 mine, Emery County, Utah, named abernathyite.

Report presenting an investigation in the low-turbulence pressure tunnel to determine the aerodynamic characteristics of NACA 64-010 and 0010-1.10 airfoil sections. The investigation covered a range of Mach and Reynolds numbers.

Abstract: Approximately 10 square miles of mainly igneous rocks of the western Mojave Desert were covered by this airborne radiometric survey in 173 hours of flying time.

Abstract: From December 1953 to May 1954 an extensive airborne reconnaissance program was conducted in northwestern Arizona (Arizona Strip) and southwestern Utah. Five surface anomalies were detected, one of which has possible commercial value. All anomalies are within the boundaries of National Park Service jurisdiction, consequently, this report is not for public distribution until clearance is obtained from the National Park Service. A preliminary airborne reconnaissance program was also conducted in the Richfield area. No anomalies were discovered.

From Introduction: "The present paper is concerned with certain aspects of the behavior of airfoil sections at high angles of attack with particular emphasis on the needs of the helicopter designer."

From Introduction: "In the present report a generalized exponential relation between pressure difference and normal flow is assumed which adequately describes porous-wall calibrations obtained experimentally at the Ames Laboratory and those presented in references 1 and 3."

From Introduction: "The purpose of the present paper is to develop a simple method of calculating both the stress at which initial wrinkling occurs in muti-web beams and the ultimate bending strength of beams which are susceptible to this mode of instability."

"The results of an exploratory experimental investigation of the effects of replacing alternate webs in a multiweb beam by open, post-stringer construction are reported. Post-stringer (either upright or inclined posts) construction is shown to perform the function of comparable-weight, solid, fabricated webs in the stabilization of the compression cover of a beam in bending both before and after buckling" (p. 1).

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Summary report of the study, research, problems and solutions developed in the final ten-weeks period of the school term for a group of men representing various scientific and engineering fields.

Rubidium metal was investigated as a possible heattransfer medium for an aircraft reactor. The separation of rubidium from other alkali metals by ion exchange was demonstrated. Data are presented on the physical and thermodynamic properties of rubidium and corrosive effects on Inconel at elevated temperatures. It was concluded on the basis of empirical formulas that more heat can be transferred in a boiling rubidium system than in a comparable boiling water system. (C.H.)

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From abstract: "An instrument was developed to detect cracks within 1/8 inch of the surface of cylindrical uranium fuel slugs. The instrument measures changes in eddy currents that are induced at a frequency of 2 KC."

Report presenting equations derived for the measurement of flame temperatures from the attenuation of a microwave beam by temperature-induced free electrons from chemical elements introduced in the flame. The free electron collision frequency and an effective ionization potential for four alkali elements were determined experimentally. Results regarding the blast burner, liquid propellant burner, and effects of addition of salt solutions on flames are provided.

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Report presenting an investigation of a method of improving the lubricating quality of silicones by providing chemically active additives. The conventional additives were not effective, but more active materials like peroxide did provide effective lubrication.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Mingo County, West Virginia. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

A method of numerical solution is developed for calculating the LAPRE (Los Alamos Power Reactor Experiment) coolant pressure drop and pcwer output with variable coolant inlet pressure, flow rate, and reactor solution temperature. The results of a series of calculations are presented that show excessive pressure drops and sonic exit flow as the flow rate is increased and the inlet pressure is decreased. Both supercritical and subcritical coolant flow regions are investignted. Reactor pcwer is shown to be strongly dependent on the solution temperaiure in the region of 700 to 750 deg F. At the design flow of 12 gal/min, excessive coolant pressure drops are encountered at inlet pressures of 2000 lb/in./ and below. (auth)

A method of numerical solution is developed for calculating the Lapre coolant pressure drop and power output with variable coolant inlet pressure, flow rate, and reactor solution temperature. The results of a series of calculations are presented that show excessive pressure drops and sonic exit flow as the flow rate is increased and the inlet pressure is decreased. Both supercritical and subcritical coolant flow regions are investigated. Reactor power is shown to be strongly dependent on the solution temperature in the region of 70O-75O degree F. At the design flow of 12 gal/min, excessive coolant pressure drops are encountered at inlet pressures of 2000 lb/in. and below.

Note presenting heat-transfer data from four wind-tunnel experiments and two free-flight experiments with turbulent boundary layers to see whether or not they are well represented by the Reynolds analogy or a modification thereof. The data cover the Mach number range from 1.4 to 3.2 at effective Reynolds numbers from 0.4 million to 24 million on a variety of body shapes. The results are presented in the form of ratios of experimental Stanton number to skin-friction coefficient and the 32 values obtained all lie within the limits.

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