"An investigation has been made in the Langley Unitary Plan wind tunnel at Mach numbers of 1.60, 1.80, and 2.00 to determine the aerodynamic characteristics of a 0.03-scale model of the Avro CF-105 airplane. The investigation included the determination of the static longitudinal and lateral stability, the control and the hinge-moment characteristics of the elevator, rudder, and aileron, as well as the vertical-tail-load characteristics. Although the data are presented without analysis, a limited inspection of the longitudinal control results indicates a loss in maximum lift-drag ratio due to trimming of about 1.8 because of the large static margin" (p. 1).

Memorandum presenting the performance of a variable-internal-contraction inlet without boundary-layer removal measured at Mach numbers of 2.00, 2.50, and 2.92. The total-pressure recovery at the design Mach number, 2.50, was 0.78. Results regarding total-pressure recovery and contraction ratio, flow unsteadiness and distortion, and summary data correlations are provided.

Report presenting the results of an experimental investigation on the ablation of a number of promising materials for heating conditions comparable to those which maybe encountered by unmanned reentry satellite vehicles or heating conditions associated with reentry ballistic missiles. Results regarding exploratory tests, further Teflon tests, and graphite testing are provided.

Report presenting wing loads and load distributions obtained by differential-pressure measurements between the upper and lower surfaces of the wing of the Douglas X-3 research airplane with various leading-edge-flap deflections. The load and hinge-moment characteristics of the leading-edge flap are presented for a range of Mach numbers with and without flap deflection. Results regarding chordwise load distributions, wing-section and wing-panel characteristics, span load and pitching-moment distributions, leading-edge-flap characteristics, and a comparison with wind-tunnel data are provided.

Report presenting an investigation of the effect of screens in a dump-type diffuser in the 2- by 2-foot supersonic wind tunnel at Mach number 3.85. Results of a slanted half screen of 0.41 solidity, positioned 0.263 inlet diameter from the cowl lip, are presented on a range basis, as this configuration allows for shortening of the subsonic diffuser.

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, Will Wilson, regarding a legal question submitted for clarification: Whether an elector who is within the county of his residence during the period for absentee voting, but who expects to be absent on election day and applies for an absentee ballot on that ground, may vote absentee by mail.

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, Will Wilson, regarding a legal question submitted for clarification: Jurisdiction of Railroad Commission and Department of Public Safety over Motor Carrier and Motor Bus Operations Between Contiguous Incorporated Cities.

2-Carboxy-4-ketopentitol is converted enzymatically by a cell-free preparation from spinach leaves into a substance undergoing acid-lactone interconversion. This substance has no phosphate or letone group and is probably a dicarboxylic, six-carbon sugar acid or the saccharic or saccharinic acid type. The significance of these findings with regard to the metabolic role of 2-carboxy-4-ketopentitol diphosphate is discussed.

A summary of the Cr data from the HRP in-pile corrosion program is examined in an effort to determine the Cr species present in such solutions under in-pile conddtions. Data from previous in-pile bomb and loop experiments pertinent to Cr behavior are tabulated, and correlations are offered to support a proposed model. It is pointed out that other interpretations of the same data are possible, and to obtain conclusive evidence as to the identity of Cr species in these solutions, especially designed experiments are necessary. (J.R.D.)

The objective of this program is to conduct a broad basic program of analytical and experimental research into the fundamental behavior of gas- lubricated bearings and to establish general design criteria for these bearings. The work to date has included both theoretical and experimental phases of hydrodynamic and hydrastatic lubrication phenomena, supplemented by a digital computer program. (W. L.H.)

The methods used to calculate the steady-state pressure and thermal stresses in the spherical portion or the HRT pressure vessel are presented, The stresses reported here were calculated using the methods considered most applicable st the present time. These methods yield stresses significantly greater than originally reported for the HRT because the calculated total heat generation rate in the vessel wall is greater, and its distribution is different. A comparison of tworegion (DP reflector) and single-region operation is made, showing very little difference between them insofar ss stresses are concerned. A limited amount of experimental heat balance data for the HRT vessel wall has been compared to the calculated values. Primarily on the bases of this comparison recommendations are made concerning further procurement of experimental data. (auth)

An analysis, based on electrical double-layer concepts, of the influence of surface active agents on ThO/sub 2/ slurry properties indicates that under reactor conditions the use of additives to obtain certain slurry properties such as low yield stress will not be effective. Corrosion ions, fission ions, and ions resulting from radiation will compress the electrical double layer on the particle surface and reduce its dispersing effect. Elevated temperatures will also work against effective double layer properties, primarily through effect on the dielectric constant. Colloidal suspensions under conditions encountered in a reactor are unstable and accordingly stable slurry properties dependent on the surface condition are unlikely to exist. Similar arguments suggest that ceramic or other surface coatings on ThO/sub 2/ particles probably would not strongly influence slurry properties in a reactor. Evidence, ss yet inconclusive, suggests that electrolyte additives, which prevent cake formation in slurries where it otherwise would be expected, act through influence on the rate and nature of primary particle degradation. (auth)

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A total of 418 abstracts from this conference and the complete text of five plenary session papers, as well as 55 abstracts from as All-Union Conference on Radiation Chemistry, have been made available in translation in AEC-tr-2925. Almost all of these papers deal with the actual applications of tracers or radiation in the national economy. The papers presented were divided into three major sections: isotope production and high-intensity gamma systems, technical sciences and industrial uses of isotopes, and biology, medicine, and agriculture. A short summary of the papers as to groups is given. (W.D.M.)

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Stainless steel-base fuel components of thin plate-typs construction and containing a dispersion of enriched UO/sub 2/ have been successfully employed in powering the Army package Power Reactor. The stationary fuel compcnent proposed for operation in the second core loading of the reactor is discussed. The component is designed for radioactive service in pressurized water at 4504DEF and consists of eighteen composite fuel plates joined into an Integral unit or assembly by brazing. Design specifications covering the material and dimensional requirements as well as the operating conditions are discussed. Step-by-step procedures developed and utilized in manufacturing the component are presented in detail. (auth)

The scope of the study was primarily concerned with optimization of the geometrical and core-composition variables to achieve maximum flux in the loop region per unit core power without exceeding heat transfer and other engineering limitations. Centain other design questions are to be investigated. (A.C.)

A survey of the effects of ternary and quaternary alloying on the stability and properties of uranium-zirconium, -- niobium, and -- molybdenum-base gammaphase alloys was conducted. The effects of ternary and quaternary additions of chromium, molybdenum, niobium, ruthenium, vanndium, and zirconium on transformation kinetics, transformation temperature, hot hardness, and corrosion resistance were investigated. Niobium or molybdenum additions to uranium-- zirconium-base alloys increased thermal stability and hot hardness of the gamma phase and lowered transformation temperatures. Those additions also generalty resulted in improved corrosion resistance. Zirconium increased the gamma-phase stability in uranium-niobium-base alloys, lowered transformation temperatures, and in some amounts increased hot hardness and improved corrosion resistance. Variable corrosion behavior of the uranium--niobium-- zirconium alloys is probably attributable to lack of homogeneity. Molybenum additions had either a negligible or detrimental effect on the thermal stability of the uranium-- niobium gamma phase, although molybdenum did lower the temperature at which alpha uranium begins to decompose on heating. The addition of 1 wt. % molybdenum to the 10 wt. % niobium alloy or 3 wt. % molybdenum to the 20 wt. % niobium alloy resulted in maximum hardness of the gamma phase at elevated temperatures, the hot hardness decreasing with larger aditions. Generally …

The following report records the use of the double-precision THEMIS code to integrate the motion of Mars and Venus in order to obtain a complete set of rectangular equatorial coordinates over the interval 1600-2000 A.D.

This is the monthly report for the Hanford Laboratories Operation, June, 1958. Reactor fuels, chemistry, dosimetry, separation processes, reactor technology, financial activities, biology operation, physics, instrumentation research, employee relations, operations research, synthesis operation, programming, radiation protection, and laboratory auxiliaries operation are discussed.

Preface; Subsequent to the analysis in the body of this report metallurgical developments indicated that it would not be feasible to build the APPR-1 Core II with the increased boron loading specified herein. At the time of the issuance of this report the Core II boron loading is to be the same as that for Core I. At the time of procurement of the core in the fall, if metallurgical developments warrant, the increased boron loading will be employed. The loading discussed in the body of the report and the first three appendices is that designed to meet the specifications outlined in the introduction. Appendix IV discusses changes in the loading to account for the various methods of employing boron.