National Advisory Committee for Aeronautics (NACA) - 273 Matching Results

Search Results

prev Results: 31 - 54 next
open access

Comparison of calculated and experimental load distributions on thin wings at high subsonic and sonic speeds

Description: A method for calculating the aerodynamic loading on a wing in combination with a body is presented. Calculated results are compared with experimentally measured data for two wing-body configurations throughout a range of Mach number up to 1.0. The magnitude and the distribution of spanwise loading of the calculated data are generally in good agreement with the experimental data.
Date: January 1957
Creator: Crigler, John L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of Mechanical Properties of Flat Sheets, Molded Shapes, and Postformed Shapes of Cotton-Fabric Phenolic Laminates

Description: Report presenting testing to determine the properties of several untreated commercial cotton-fabric pheonlic sheet laminates, the same sheets after exposure to a postforming heating cycle, industrially postformed shapes made from those materials, industrially molded and laboratory-molded shapes, and flat panels postformed in the laboratory from the laboratory-molded shapes. Results regarding tensile properties, flexural properties, and water absorption are provided.
Date: January 1957
Creator: Reinhart, F. W.; Good, C. L.; Turner, P. S. & Wolock, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of NACA 65-series compressor-blade pressure distributions and performance in a rotor and in cascade

Description: An investigation has been conducted to compare the performance of NACA 65-series compressor blades in two-dimensional cascade with that in an axial flow compressor. Blade pressure distributions were obtained by the use of a mercury-seal pressure-transfer device. The comparison indicated that cascade data accurately predicted the turning angle and blade pressure distribution obtained in the compressor at design conditions.
Date: March 1957
Creator: Westphal, Willard R. & Godwin, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A comparison of typical National Gas Turbine Establishment and NACA axial-flow compressor blade sections in cascade at low speed

Description: Report presenting comparative low-speed cascade tests of the National Gas Turbine Establishment of Great Britain axial-flow compressor blade sections at a range of air-inlet angles and a solidity of 1.0 using the porous wall technique. Results regarding a comparison of performance characteristics of the NGTE and NACA axial-flow compressor blade sections and a comparison of NGTE and NACA low-speed cascade tests of the NGTE 10C4/30C50 section are provided.
Date: March 1957
Creator: Felix, A. Richard & Emery, James C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Compressible Laminar Boundary Layer Over a Yawed Infinite Cylinder With Heat Transfer and Arbitrary Prandtl Number

Description: Note presenting the equations for development of the compressible laminar boundary layer over a yawed infinite cylinder. The results indicate that the effect of yaw on the heat-transfer coefficient at the stagnation line depends markedly on the free-stream Mach number.
Date: June 1957
Creator: Reshotko, Eli & Beckwith, Ivan E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Compressive Stress-Strain Properties of 17-7 PH and AM 350 Stainless-Steel Sheet at Elevated Temperatures

Description: Note presenting compressive stress-strain test results for 17-7 PH and AM 350 stainless-steel sheet in the heat-treated and annealed conditions for temperatures from room temperature to 1200 degrees Fahrenheit. Representative stress-strain curves are given for both materials at the test temperatures.
Date: August 1957
Creator: Stein, Bland A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A correlation of low-speed, airfoil-section stalling characteristics with Reynolds number and airfoil geometry

Description: From Summary: "The low-speed stalling characteristics of a large number of airfoil sections have been correlated with Reynolds number and a single airfoil ordinate near the leading edge as the correlation parameters. The correlation is appropriate only to airfoils without high-lift devices in flows of very low turbulence and with aerodynamically smooth surfaces."
Date: March 1957
Creator: Gault, Donald E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Correlation of Results of a Flight Investigation With Results of an Analytical Study of Effects of Wing Flexibility on Wing Strains Due to Gusts

Description: Report presenting a study of the effects of wing flexibility on wing strains due to gusts for four spanwise stations of a four-engine bomber airplane and a correlation with previous testing results. Results regarding the power spectre, peak counts, amplification factors, statistical reliability, input disturbance, frequency-response functions, output response, and amplification factors are provided.
Date: August 1957
Creator: Shufflebarger, C. C.; Payne, Chester B. & Cahen, George L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Creep Behavior of Structural Joints of Aircraft Materials Under Constant Loads and Temperatures

Description: "The results of 55 creep and creep-rupture tests on structural joints are presented. Methods are described by which the time to rupture, the mode of rupture, and the deformation of joints in creep may be predicted. These methods utilize creep data on the materials of the joint in tension, bearing, and shear" (p. 1).
Date: January 1957
Creator: Mordfin, Leonard & Legate, Alvin C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Creep Deformation Patterns of Joints Under Bearing and Tensile Loads

Description: Note presenting an investigation to study the interaction of bearing and tensile loads on the creep behavior of joints. A simplified model was employed which contained many of the features found in riveted connections. Results regarding creep-rupture tests, plate subjected to tension, plate subjected to bearing loads, plate subjected to tensile and bearing loads, and index of joint behavior are provided.
Date: December 1957
Creator: Bodine, E. G.; Carlson, R. L. & Manning, G. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and experimental evaluation of a light-weight turbine-wheel assembly

Description: Report presenting lightweight design concepts, which were developed and tested in a full-scale turbine wheel with a tip diameter of 34.3 inches and a tip speed of 1190 feet per second. It consisted of a rotor of two thin alloy disks attached with spacers and bolts and hollow turbine blades. Testing indicated that it would be particularly applicable to an expendable missile engine.
Date: June 1957
Creator: Morgan, W. C. & Kemp, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of surge and stall limits of an axial-flow turbojet engine for control applications

Description: Report presenting an investigation of an axial-flow turbojet engine in the altitude wind tunnel, including limitations on transient operation of the engine in relation to two altitudes and exhaust-nozzle-areas. Results regarding hysteresis, frequency of surge and stall, altitude effect, exhaust-nozzle-area effect, and a comparison of steady-state and transient surge lines are provided.
Date: September 1957
Creator: Schmidt, Ross D.; Vasu, George & McGraw, Edward W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a piston-compressor type light-gas gun for the launching of free-flight models at high velocity

Description: 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.
Date: November 1957
Creator: Charters, A. C.; Denardo, B. Pat & Rossow, Vernon J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Discussion of Cone and Flat-Plate Reynolds Numbers for Equal Ratios of the Laminar Shear to the Shear Caused by Small Velocity Fluctuations in a Laminar Boundary Layer

Description: "By use of the linear theory of boundary-layer stability and Schlichting's formula for the maximum amplification of a disturbance, an approximate relation is derived between the Reynolds number on a cone and the Reynolds number on a flat plate for equal closeness to transition. The indication is that the ratio of the cone Reynolds number for transition, based on the distance to the cone apex, to the plate Reynolds number for transition, based on the distance to the leading edge, is not in gener… more
Date: August 1957
Creator: Tetervin, Neal
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ditching investigations of dynamic models and effects of design parameters on ditching characteristics

Description: From Summary: "Data from ditching investigations conducted at the Langley Aeronautical Laboratory with dynamic scale models of various airplanes are presented in the form of tables. The effects of design parameters on the ditching characteristics of airplanes, based on scale-model investigations and on reports of full-scale ditchings, are discussed. Various ditching aids are also discussed as a means of improving ditching behavior."
Date: February 1957
Creator: Fisher, Lloyd J. & Hoffman, Edward L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Drop-size distribution for cross current breakup of liquid jets in airstreams

Description: Report presenting drop-size-distribution data obtained for liquid jets atomized by cross-stream injection from simple orifices into high-velocity airstreams. A high-speed camera and a sampling technique were combined to obtain data over ranges of injector, liquid, and airstream variables.
Date: October 1957
Creator: Ingebo, Robert D. & Foster, Hampton H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of ambient-temperature variation on the matching requirements of inlet-engine combinations at supersonic speeds

Description: Report presenting an analysis of the effect of ambient temperature on the matching requirements of inlet-engine combinations for two typical turbojet engines up to Mach number 3.5. The results indicated that if a bypass or movable compression surface are to be used for efficient inlet-engine matching, the inlet should be sized for the lowest ambient temperature to be encountered.
Date: January 1957
Creator: Perchonok, Eugene & Hearth, Donald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of an Interface on Transient Temperature Distribution in Composite Aircraft Joints

Description: Note presenting testing of geometrically related structural joints representing typical skin-stringer cross sections under radiant heating to simulate the effects of aerodynamic heating. The presence of an interface was found to have a significant effect on the temperature distribution in all geometries tested and thus must be considered in temperature calculations. Interface conductance values were computed for each of the 15 fabricated specimens.
Date: April 1957
Creator: Barzelay, Martin E. & Holloway, George F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of bluntness on transition for a cone and a hollow cylinder at Mach 3.1

Description: Bluntness was more effective in displacing transition downstream on a cylinder than on a cone. The downstream displacement of transition is related to the formation of a shock layer within which the Reynolds and Mach numbers are reduced and to pressure gradients that exist over the forward part of the model. Round bluntness in general had a favorable effect, whereas sharp-cornered flat bluntness above a certain size had unfavorable effects on the location of the transition point.
Date: May 1957
Creator: Brinich, Paul F. & Sands, Norman
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Crystal Orientation on Fatigue-Crack Initiation in Polycrystalline Aluminum Alloys

Description: Report presenting testing demonstrating that fatigue cracks initiate in preexisting slip bands on planes parallel to planes from tests on large-grained specimens of 1100 and 5052 aluminum alloys. The resolved shear stress on the planes in crystal where fatigue cracks had developed were compared to uncracked crystals. Results regarding the location fatigue cracks, number of stress cycles observed, and differences of the crystals observed in the two types of aluminum alloys are provided.
Date: August 1957
Creator: Weinberg, J. G. & Bennett, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of fiber orientation on ball failures under rolling-contact conditions

Description: The rolling-contact fatigue spin rig was used to test balls of a bearing steel at maximum Hertz stresses of 600,000 to 750,000 psi. The effect of fiber orientation was observed with the ball track restricted to passing directly over the poles, coincident with the equator, or randomly around the ball. The polar areas were found to be weaker in fatigue than the nonpolar areas. This resulted in a much greater portion of the failures occurring in the polar areas than would be expected from a homoge… more
Date: February 1957
Creator: Butler, Robert H.; Bear, H. Robert & Carter, Thomas L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Fluid-System Parameters on Starting Flow

Description: 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 configu… more
Date: September 1957
Creator: Krebs, Richard P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The effect of forward-flight speed on the propulsive characteristics of a pulse-jet engine mounted on a helicopter rotor

Description: Report presenting a determination of the effect of rotor forward speed on the propulsive characteristics of a blade-tip-mounted helicopter-type pulse-jet engine in the full-scale tunnel for various engine rotational speeds. The effect of forward speed was to decrease mean engine thrust and increase engine specific fuel consumption. Results regarding power-off engine drag, power-on engine thrust characteristics, and a general engine performance summary are provided.
Date: January 1957
Creator: Powell, Robert D., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Frequency and Temperature on Fatigue of Metals

Description: Note presenting a qualitative approach to the problem of the effect of frequency and temperature on fatigue, as the theoretical and experimental results do not always seem to match. The fatigue problem is examined from the viewpoint of a two-component system.
Date: February 1957
Creator: Valluri, S. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen