A wind-tunnel investigation was made to determine the effects on the aerodynamic characteristics of a 35 degree swept-wing airplane of applying blowing-type boundary-layer control to the trailing-edge flaps. Flight tests of a similar airplane were then conducted to determine the effects of boundary-layer control on the handling qualities and operation of the airplane, particularly during landing and take-off. The wind-tunnel and flight tests indicated that blowing over the flaps produced large increases in flap lift increment, and significant increases in maximum lift. The use of blowing permitted reductions in the landing approach speeds of as much as 12 knots.

A study of the radiation effects of fast neutrons (O.5 ev to about 15 Mev) and gamma rays (fission spectrum) on various pieces of aircraft instrumentation is re ported. Components studied were: fuel gage vacuumtube amplifier and indicator, transistorized (germanium and silicon) servo amplifier system, and 4-in. diam. gyro. The fuel gage was subjected to a total neutron flux of about 6 x 1O/sup 5/nvt and about 5 x 1Osup 8/ r gamma with no adverse electrical effect. Physical damage was evident. Four transistorized amplifiers were irradiated in a fast flux of about 1.0 x 10/sup 10/cm/sup 2/ sec. Rapid loss in gain, rapid increase in d-c current drain, and complete failure occurred when the integrated flux reached about same flux. Studies on the gyro were inconclusive due to equipment failure. (auth)

The schedule for the installation of the PAR slurry loop experiment in the South Facility of the ORR has been reviewed and revised. The design, fabrications and Installation is approximately two weeks behind schedule at this time due to many factors; however, indications are that this time can be made up. Design is estimated to be 75% complete, fabrication 32% complete and installation 12% complete.

Abbreviated press feed preparations of UO/sub 2/ powder appear suitable for the automatic pressing of pellets on a production scale. Progress was made in achieving compartment uniformity in disc-compartmented stretch-formed fuel tubes and controlling the free space for pellet expansion within the compartments. The designs for additional in-pile and out-of-pile test specimens were completed. A reference control rod program was developed on the basis of outside-in'' rod withdrawal in order to approach uniform fuel burnup and fission product buildup in the core. Stainless steel specimens suffered no detrimental attack as a result of their exposure to borated water under simulated reactor conditions in a dynamic test loop. The successful fabrication of a full-size strap design fuel assembly model demonstrated the feasibllity of welding tubes lnto bundles. Pressure drop versus flow curves were experimentally determined for the reactor vessel model Various fuel loadings in the CRX core were used in materials buckling measurements, control rod worth determinations, and instrumentation evaluations. The latest revisions of mechanical, thermal, and nuclear design data are appended. (For preceding period see YAEC-52.) (D.E.B.)

6 9 2 4 8 < E 5 0 2 5 H 5 of a solution containing 0.04 M UO/sub 2/SO/sub 4/, 0.025 M D/sub 2/SO/sub 4/, 0.03 M CuSO/sub 4/ and 750 ppm of nickel as nickel sulfate at 300 deg C in D/sub 2/0 but both nickel and copper were lost from solution when the nickel concentration was increased to 1700 ppm. The chemical stability of a solution containing 0.036 M UO/sub 2/SO/sub 4/, 0.022 M D/sub 2/SO/sub 4/, 0.009 M CuSO/sub 0.013 M NiSO/sub 4/ and 0.0016 M MnSO/sub 4/ in D/sub 2/0 was also demonstrated at 300 deg C. The corrosion of stainless steel in 0.04 M UO/sub 2/S/sub 4/O/sub 4/ containing 0.025 M H/sub 2/SO/sub 4/ and 0.0 1 M CuSO/sub 4/ was found to be relatively severe above the critical velocity at 250 and 300 deg C. The critical velocities observed were 10 to 20 and 30 to 40 fps, respectively at 250 and 300 deg C. Loop runs in which oxygen was removed from solution have shown that as uranium precipitated excess acid, ferrous and nickelous ions formed. On addition of oxygen to such a solution, uranium dissolved and ferrous ions were oxidized …

None

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: Payment of Special Commissioners in Condemnation Suits.

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: Are the so-called "family group" life insurance policies being submitted to the State Board of Insurance contrary to the provisions of Article 3.50, Section 4, of the Texas Insurance Code, and related questions.

This report describes the second part of an IBM 704 Computer Code to determine transient thermal stress in pressure vessels. This part computes stresses from temperature distribution determined by the first part. A brief account is given of the solution of axially symmetric thermal stresses, using harmonic stress functions. This is followed by a description of the Code and complete input and operating instructions for a number of problems: a. Transient temperature distribution due to sudden change of temperature. b. Transient temperature distribution due to surface temperature changing as a function of time. c. Thermal stresses for temperature problems ( a ) or (b). d. Thermal stresses due to previously known temperature distribution. The code is known as TURF6. It was found that the computer results for thermal stresses in a solid sphere subjected to a sudden change of temperature at the surface corresponded within 5% of the theoretical values. The IBM 704 Computer required for this code has a 16 K memory, three drums and two tape units.

The expression STAM(Pr) /sup 2/3//(M Cp)/sup 3/! which is often used to compare the merits of various gas coolants is derived and the errors involved in using this term are discussed. An example using CO/sub 2/ and He is shown to illustrate the difference between the true pumping power required and that predicted by the above expression. (auth)

Memorandum presenting an analysis of a large number of liquid-metal-to-air heat-exchanger cores for the nuclear-powered liquid-metal turbojet cycle to determine which types yield the best overall net thrust per total engine weight. The performances of all exchangers considered were initially evaluated at a median condition. The performance of the best of each of the four types was compared with that of a shell-and-tube exchanger with the air flowing through the tubes, operating at the same condition.

Data are presented from the following studies: the radiation chemistry of pepsin, gelatin, methanol, benzene, and hexanes; the effects of irradiation of the pituitary in advanced cancer using high-energy particles from the 184-inch cyclotron; applications of ion beams in biological studies; the metabolism of strontium-90 and its relation to calcium metabolism in rats; hematological effects of low-level radiation doses in man; the influence of diet on serum lipoproteins; development of simplified methods for the analysis of blood serum for lipid content; tracer studies employing iron59 of red blood cell production and destruction and iron metabolism in a wide variety of blood disorders; tracer studies on heart function and blood circulation employing I/sup 131/; applications of C/sup 14/ in studies of leukocyte formation from which it was concluded that peripheral neutrophils have a 2-day life span, large lyphocytes a life span of 2 to 3 days, and small lyphocytes a life span of between 8 and 14 days; tracer studies employing P/sup 32/ in studies of the phagocytic action of cells of the reticuloendothelial system; factors regulating the volume of the body fluids; and development of a method for determining estrogen concentration in urine. Radiation protection activities are summarized. Lists are …

The following report records measurements and evaluations of fast neutron levels in remote areas monitored by personnel.

Abstract: An analysis and a summary are.given of the radioactivity buildup program at the Army Package Power Reactor during the last nine months. · Due to the wide fluctuation of water and crud results, only general interpretations can be made with this data. Metal test coupon data indicate a substantially greater buildup on Croloy 16-1 metal than on Type 304 stainless steel. Coupled with the decreased ability to remove the radioactivity buildup on Croloy 16-1 by conventional descaling techniques, the implication is that this metal might pose a serious problem for use as steam generator material. It was emphasized, however, that results to date ae only preliminary and extensive additional experimentation would be required to reach more definite conclusions.

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 oil, gas and mineral properties held in trust for Texas Baptist Children's Home for stated purposes are exempt from county ad valorem taxes.

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 or not County Assessor and Collector of Taxes may lawfully collect taxes, penalty and interest from true owner of property when property has been assessed in name of deceased former owner.

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: Is it legal for a Soil Conservation District, created under provisions of House Bill 444, Acts 47th Legislature, 1941, Chapter 308, page 491, to accept conditioned easements for flood prevention structures, in which a Soil Conservation District assumes financial responsibility for damage to utility lines and other installations; and related questions.

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: Methods of handling contracts by the Board of Control.

None

This document discusses the standards and testing relating to the allowable water shutoff times for reactor tubes and crossheaders are based on theoretical calculations. The resulting limits are believed to be quite conservative and to restrict operations unduly in many instances. They are restrictive because of the conductivity and resistance data on which they are based. It is the purpose of the test to obtain the experimental data necessary to determine new water shut-off curves for the reactors. When reliable information is obtained for elevated temperature lattice conductance then theoretical calculations applying to those values will be far more accurate. The information will be related to water shut-off times, reactor safety considerations such as rod strength and drop time versus uranium fuel melting, etc. It can be roughly estimated that this information will reduce the time delay before tube and/or cross-header water shut-off by as much as 25%. This will save approximately one to two days production per year or about $60,000.

Iron oxide deposits removed from high pressure system of HRT after the first power run will be annlyzed for Fe/sup 59/ in an attempt to determine the time these deposits were circulated prior to deposition (settling or film formation). Deposits available are film from corrosion specimens (stainless steel, zirconium and titanium) and settled particles. (auth)

A study of the solubility limits of iron and tin in alpha zirconium at temperatares below 500 deg C is in progress. Dilute alloys were prepared by arc- melting using the highest purity materials. Heat treatment of the alloys involves homogenizntion at 800 deg C followed by severe cold work prior to extended anneals at temperatures between 200 and 500 deg C in 50-degree intervals. Metallographic examination of annealed and quenched structures is the primary mode of investigation. Some magnetic susceptibility studies were also made. (auth)

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: Authority of the State Soil Conservation Board to compensate Field Planning Engineers in an amount in excess of the salary schedule of other employees of the State Soil Conservation Board.

One of the major factors restricting reactor power levels is the incidence of ruptured slugs. The primary purpose in studying ruptures is to determine how reactor operating variables affect rupture rates. With this knowledge reactor operating conditions may be adjusted or controlled in the manner that will optimize reactor production. In addition, knowledge of rupture rate relationships are useful in fuel element development and in overall economic studies of existing and proposed reactors and reactor processes. This report is a compendium of various types of rupture information largely developed during the past eighteen months. Plant rupture experience for CY-1957 is reviewed; rupture rate correlations with reactor variables for solid natural uranium material are presented; a comparison between solid and cored natural uranium material rupture rates is made; the basis for current discharging practice of rupture-prone metal lots is discussed. 11 figs., 2 tabs.