Report presenting an investigation in the high-speed 7- by 10-foot tunnel to determine the effectiveness of a given deflector arrangement as a gust alleviator on a model of the Bell X-5 airplane with various wing sweep angles, Mach numbers, and angles of attack. Results regarding lift, drag, and pitching moment are provided.

From Summary: "Elevated-temperature compressive-strength test results form room temperature to 600 degrees Fahrenheit and creep test results from 350 degrees Fahrenheit to 500 degrees Fahrenheit are presented for V-groove edge-supported plates of 7075-T6 aluminum alloy. The test data are compared with calculations obtained from procedures for estimating maximum strength from material stress-strain curves and creep-failure stresses from isochronous stress-strain curves. The strength and creep results from this investigation are also compared with similar results from 2024-T3 aluminum-alloy plates."

From Introduction: "The data for operations both with and without radar installed have been analyzed and the results are presented in this paper. Although these results are of limited extent, they provide a basis for early examination of any trends in the gust loads and associated operating practices which might be attributed to the use of radar."

Note presenting measurements of turbulent flame speeds and space-heating rates, which were made in a 1/2- by 2-inch glass-walled burner in which area blockage was introduced. Results regarding the effects of fuel-air ratio and velocity variation, effect of restriction shapes, effect of flameholder size without downstream restriction, heat-release rates, flame blowout and interruption by restrictions, flow tracer study, and shadow and direct photographs of the flame are provided.

Report presenting testing of missiles in which temperatures are approximated and aerodynamic heating of the model is representative of that experienced by the missile in high-velocity flight. The paper describes a piston compressor type of light-gas gun, which shows good agreement between predictions of performance charts and experimental data.

Note presenting a study of the effect on the boundary layer of blowing air through a porous flat plate into a main airstream flowing parallel to the plate. Measurements were made of velocity profiles and wall friction coefficients. The observed friction coefficients are predicted by mixture-length theory if the Reynolds number at the outer edge of the laminar sublayer is permitted to vary with the dimensionless ratio.

Report discussing an experimental investigation was carried out on air- and vacuum-melted M-252 and S-816 alloys to find conditions of heating and hot-working which resulted in abnormal grain growth. The experiments were mainly limited to normal conditions of heating for hot-working and heat treatment and normal temperatures of solution treatment were used to allow grain growth after susceptibility to abnormal grain growth was developed by various experimental conditions. Results indicated that small reductions of essentially strain-free metal were the basic cause of such grain growth.

Note presenting existing data on the errors involved in the measurement of static pressure by means of static-pressure tubes and fuselage vents. The errors associated with the various design features of static-pressure tubes are discussed for the condition of zero angle of attack and for the case where the tube is inclined to the flow.

Report presenting ground testing to determine pilots' force capabilities on a proposed side-loaded aircraft controller on one side of the cockpit and situated so the pilot's arm is supported. Data were obtained from 11 pilots, including five research pilots and six research engineers. Results regarding the force levels and operating range of the controller, deviations in data, effect of arm position, and need for additional testing are provided.

Report presenting radiosonde measurements of upper-air temperatures taken over a 5-year period at nine stations in the northern hemisphere are summarized in order to provide information on the temperatures likely to be encountered during airplane and missile operations up to 100,000 feet.

Report presenting an analysis of the heat-absorption characteristics of several materials for the use of ballistic missile heat sinks. The four materials considered were copper, Inconel-X, graphite, and beryllium.

Report presenting results of simulated flight-history testing, which is part of a research program on the fatigue strength of the wings of C-46 airplanes. Testing was conducted using a forced-vibration method, in which a spectrum of loads derived from gust-frequency statistics was used. Results regarding crack initiation and classification, fatigue-crack propagation, final failure, and a lifetime comparison are provided.