Report discussing interactions of 420-Mev/c K- mesons incident on a nuclear emulsion stack. Information on the differential scattering, elastic scattering, absorption events, and inelastic scattering of the mesons is provided. Additionally, the ratio of Λ to Σ hyperons produced in the primary interaction is calculated.

This report describes a completed counter experiment to measure the attenuation of K+ mesons in various materials.

The following report studies the interactions of K-mesons in nuclear track emulsions and measures range-energy.

Abstract: "Experimental evidence is given which indicates that electronic bombardment is responsible for damage and failure of insulating material subjected to intense corona attack. The experimental revolts are further supported by some theoretical considerations of the energy-time properties of corona discharges."

Introduction: Atomic Energy Facts is designed to serve as an introduction to nuclear operations in the United States and as a handbook of related information for the use of industrial firms and other active or interested in atomic energy.

It is the intent of this paper to discuss briefly the characteristics and significant naval architectural features of the nuclear powered passenger-cargo ship.

Abstract: The design and construction of a slide rule for calculating the solid angle subtended by a rectangle at a point located on a line perpendicular to the center of the rectangle are described.

The following report analyzes carry transformation circuits and their value when approaching the general problem of carry transmission in computer addition.

Report issued by the Bureau of Mines over studies conducted on bleeder application in bituminous coal mines. The methods and results of the studies are presented. This report includes illustrations.

Report issued by the Bureau of Mines over surveys conducted to determine the best fire-fighting technology for coal mines. The equipment, procedures, and cost of the technology were assessed. This report includes tables, maps, and illustrations.

Report presenting equations, tables, and figures for use in the analysis of helium flow at supersonic and hypersonic speeds. Tables are provided for useful dimensionless ratios for continuous one-dimensional flow and normal-shock waves as functions of Mach number. The oblique-shock characteristics of wedges and cones in helium at various Mach numbers are also presented.

Report presenting a method by which the residual stress distribution in a disk can be determined with the aid of the obliquely mounted strain gage when the directions of the principal stresses are radial and tangential. The strain gages are mounted in such a way as to make them sensitive only to the tangential stresses in the disk. Results regarding cutting procedure, accuracy of the method, and an independent check of the method are required.

Report presenting a flight investigation of a large swept-wing bomber airplane in rough air at 5,000 feet to determine the effects of wing flexibility on wing bending and shear strains. Aeroelastic effects were found to be large, particularly at the outboard measuring stations. Results regarding the bending strains and shear strains are provided.

Note presenting a thermal system which could be used to determine whether the boundary layer on a wing in flight is turbulent or laminar. Tests were made using this system in the low-turbulence pressure tunnel.

Note presenting an investigation of hydrodynamic impact loads on chine-immersed bodies of heavy beam loading, which has been expanded to include transversely curved models in addition to models of prismatic shape. The paper presents the results from tests of a chine-immersed model with a circular-arc cross section with a radius of 1 beam. The data are presented in tables, and the coefficients of loads and motion are presented in figures as a function of trim and initial flightpath angles.

Note presenting testing of a V-bottom model with a dead-rise angle of 30 degrees and the forward half longitudinally curved upward on a radius of 10 beams in the impact basin as part of a program to study the effects of transverse and longitudinal curvature on impact loads of chine-immersed models. The data are presented and analyzed to determine the extent of bow immersion during the impacts.

Note presenting an analysis made to determine the effect of configuration parameters and valve area-time operating relations on the speed of response of the liquid flow and the suppressed suction head of the pump in a rocket motor. The configuration consisted of tank, pump, combustion chamber, valves, and lines, including a bypass line with a valve around the pump. Results regarding the effect of valve resistance-time history on pump suppression head and flow response time and effect of configuration parameters are provided.

A wind-tunnel investigation has been made to determine the characteristics of external-flow jet-augmented double slotted flaps which appear suitable for application to airplanes with pod-mounted engines. The investigation included tests of the rectangular wing with an aspect ratio of 6 over a momentum-coefficient range from 0 to 28. Lift coefficients larger than the jet reaction in the lift direction were obtained with the external-flow jet-augmented double slotted flaps.

Report presenting a compilation of most of the zero-lift drag obtained from free-flight measurements on fin-stabilized bodies of revolution. Results regarding friction drag, base pressure and base drag, pressures on a forward facing step, and fin pressure drag are provided.

A practical method for solving plastic deformation problems in the elastic-plastic range is presented. The method is one of successive approximations and is illustrated by four examples which include a flat plate with temperature distribution across the width, a thin shell with axial temperature distribution, a solid cylinder with radial temperature distribution, and a rotating disk with radial temperature distribution.

Results are presented of tests conducted in the Langley stability tunnel to determine the effects of various components and combinations of components on the static longitudinal and lateral stability characteristics at low speed of a series of 45 degree sweptback-midwing-airplane configurations having wings with an aspect ratio of 2, 4, or 6. The tests were made at a dynamic pressure of 24.9 pounds per square foot which corresponds to a Mach number of 0.13 and Reynolds numbers of 1.00 x 10(exp 6), 0.71 x 10 (exp 6), and 0.58 x 10 (exp 6) based on the respective wing mean aerodynamic chords. The angle-of-attack range covered was from -4 degrees to 32 degrees and the sideslip angles used for the lateral-derivative tests were 5 degrees and -5 degrees. An increasing loss in tail contribution to directional stability both with increasing wing aspect ratio and increasing angle of attack was found to be a principal cause of all the complete models becoming directionally unstable in the high angle-of-attack range.

Report presenting flat 2024-T3 aluminum panels measuring 11 inches by 13 inches were tested in the near noise fields of a 4-inch air jet and turbojet engine. The stresses which were developed in the panels are compared with those calculated by generalized harmonic analysis. Results regarding noise inputs, panel characteristics, procedure for calculating stress, and comparison of calculated and measured stresses are provided.

From Summary: "Tensile stress-strain test results are presented for 17-7 PH stainless-steel sheet in the Condition TH 1,050 and for AM 350 stainless-steel sheet in the double-aged condition for temperatures from room temperature to 1,300 degrees Fahrenheit. Stress-strain curves and data for yield and ultimate stresses, Young's modulus, and elongation are given in tabular and graphical form. A comparison is made between the tensile properties and the compressive properties of NACA Technical Note 4074."

Note presenting an investigation to determine the effectiveness of the deoxidation and sintering techniques by comparing the strengths and microstructures of powder-metallurgy specimens with those of wrought specimens, to determine the effect of residual-oxide content on the tensile properties of powder-metallurgy specimens, and to evaluate different methods of obtaining essentially oxide-free powders by these determinations. The three methods consisted of tumbling the powder in contact with hydrogen in a rotary tube furnace, heating the oxidized powder in contact with sodium hydride in a hydrogen atmosphere, and heating the oxidized powder in contact with carbon in a hydrogen atmosphere.