The applicability of the gas centrifuge to the separation of the isotopes of the elements from Ti through U was examined. The suitable elsments were determined, and their effects on required centrifuge characteristics were surveyed. The performance of cascades of various aires with different gages was explored, and the cost of a pilot plant program to develop basic separation data was estimated. (F.S.)

The food irradiation facility described consists of: a fully enriched light-water-cooled and -moderated heterogeneous reactor core surrounded by a blanket of indium sulfate aqueous solution; an indium solution system which includes the reactor blanket and the gamma radiators; primary and auxiliary cooling water systems for removal of reactor heat; radiator cubicles into which the food is conveyed for irradiation; and buildings for housing the reactor, radiators, and operations personnel. (auth)

A heat transfer equation was derived relating the fluid friction to the heat transfer coefficient for Bingham plastic slurries. (W.L.H.)

Memorandum presenting a low-speed investigation to determine the effect of a fuselage on the longitudinal aerodynamic characteristics of a 45 degree sweptback wing equipped with 0.35-semispan double slotted flaps. The wing had an aspect ratio of 3.7, a taper ratio of 0.41, and a streamwise thickness ratio of 0.086.

Memorandum presenting a high-flow sonic-inlet compressor rotor employing double-circular-arc blade sections that was designed and tested in Freon-12. Results regarding overall performance, radial distribution, and blade-element performance are provided.

Report presenting a free-flight investigation over a range of Mach numbers at a range of lift coefficients to determine the aerodynamic characteristics of an airplane-configuration model with a 52.5 degree delta wing and a low, swept horizontal tail. Results regarding time history, longitudinal trim, lift, drag, longitudinal static stability, side-force characteristics, and theoretical comparisons are provided.

This document presents a summary of work and progress at the Hanford Engineer Works for August 1956. The report is divided into sections by department. A plant wide general summary is included at the beginning of the report, after which the departmental summaries begin. The Manufacturing Department reports plant statistics, and summaries for the Metal Preparation, Reactor and Separation sections. The Engineering Department`s section summarizes work for the Technical, Design, and Project Sections. Costs for the various departments are presented in the Financial Department`s summary. The Medical, Radiological Sciences, Utilities and General Sciences, Employee and Public Relations, and Community Real Estate and Services departments have sections presenting their monthly statistics, work, progress, and summaries.

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Corrosion of anode assembly materials in fluorine generators is pronounced, therefore, selection of the proper materials for construction is important. Several metals and alloys have been tested for corrosion resistance when anodic in a fluorine test cell. In general, copper, copper alloys and magnesium alloys offer the best corrosion resistance.

Memorandum presenting a free-flight investigation to determine the lift, drag, static stability, and hinge-moment characteristics of a rocket-powered model of a rocket-powered model of a ballistic-missile configuration at supersonic speeds. The model consisted essentially of a body of fineness ratio 16.9 and a cruciform set of small 60 degree delta fins located approximately 1 body diameter from the base of the body. The model lift and pitching-moment coefficients were nonlinear with angle of attack.

Report presenting a free-flight investigation to determine the lift, drag, static stability, and hinge-moment characteristics of a rocket-powered model of a ballistic-missile configuration. The purpose of this particular investigation was to determine these characteristics with a long run of boundary layer ahead of small 60 degree delta stabilizing fins.

One of the specifications for the final plutonium product is a maximum neutron emissivity (neutrons per gram-second). The major source of neutrons in plutonium is the spontaneous fission of the 240 isotopes. The concentration of the 240 isotope is a function principally of the total pile exposure and, to a lesser extent of pile operating parameters; in particular, the moderator temperature. The objectives of this production test were: to establish with greater accuracy and precision, empirical relationships between the neutron emissivity, the plutonium isotope 240 concentration, and the pile exposure; and to determine if the isolated plutonium nitrate solution could be used as a control point for neutron emissivity prior to final fabrication. Accomplishment of these objectives would permit setting of pile exposure goals at the maximum possible level for greatest economy while still maintaining product quality within specifications.

Experiments are proposed to studp the effects of reactor radiation at elevated temperatures on the stability and corrosive properties of aqueous fuel systems. A general description of the experiment, its hazards, and safeguards is given. (M.H.R.)

Report presenting the aerodynamic heat-transfer properties and zero-lift drag of a typical pilot's canopy as determined by a rocket-model flight test through a range of Mach and Reynolds numbers. The canopy had a 63 degree sweptback flat windshield, circular cross section, and an equivalent body fineness ratio of 7.0. Results regarding the canopy temperature distribution, canopy pressure distribution, heat-transfer coefficient, and drag are provided.

Report presenting an examination of the limitations of the use of jet momentum coefficient as a correlating factor in comparing tests of blowing-type boundary-layer control. Theoretical and experimental data indicate that it should be an acceptable parameter where the duct pressures are large.

From Introduction: "The results of tests in which area suction was applied near the leading edge of the wing or the knee of a leading-edge flap are reported in references 1 through 5."

Discussing velocity logging carried out during six weeks of fieldwork in 1955 through contracts with the Texas Company.

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Memorandum presenting an investigation of the location of transition from laminar to turbulent flow in the boundary layer on two bodies of revolution at zero angle of attack in a low-turbulence wind tunnel. One body was a prolate spheroid of fineness ratio 9.0 made out of aluminum and the other was a modified prolate spheroid of fineness ratio 7.5 made out of steel and covered with fiberglass and resin.

From abstract: "The stability constants of curium and americium alpha hydroxyisobutyrate complexes were determined by means of ion exchange equilibrium measurements on Dowex-50 four percent resin in the ammonium form."

This report contains tabulations of the approved waste limits for Hanford plants. These data are to be used in making allowable waste calculations.

From Summary: "A wind-tunnel investigation has been made in the Langley high-speed 7- by 10-foot wind tunnel by use of the transonic-bump technique to study the effectiveness of spoiler-type controls on 9 unswept untapered wings. Full-span spoilers, projected to 7.5 percent wing chord along the 40-, 60-, 80-, and 100-percent wing chord lines, were tested on wings of aspect ratio 1 to 6 at Mach numbers from 0.6 to 1.10. Most of the data are presented without analysis."

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