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The Column Strength of Aluminum Alloy 75S-T Extruded Shapes
"Because the tensile strength and tensile yield strength of alloy 75S-T are appreciably higher than those of the materials used in the tests leading to the use of the straight-line column curve, it...
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Stress Analysis of Columns and Beam Columns by the Photoelastic Method
"Principles of similarity and other factors in the design of models for photoelastic testing are discussed. Some approximate theoretical equations, useful in the analysis of results obtained from...
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Lightning Discharges to Aircraft and Associated Meteorological Conditions
A summary is given of information on atmospheric electrical discharges to aircraft and associated meteorological conditions. Information is given that is designed to give a fairly comprehensive view of...
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The 1000 HP Traffic Airplane of the Zeppelin Works in Staaken
Report details the characteristics and advantages of the swift traffic airplane constructed by Zeppelin Works at Staaken. The maximum speed, weight, construction, layout, and landing capabilities of...
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The Air Propeller, Its Strength and Correct Shape
It is possible to give a propeller such a shape that, under given conditions, viz., a definite speed of revolution and flying speed, the bending stresses in the blades will assume quite an...
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N.A.C.A. Recording Air Speed Meter
A new type of air speed meter is described which was designed by the technical staff of the National Advisory Committee for Aeronautics. The instrument consists essentially of a tight metal diaphragm...
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N.A.C.A. Flight-Path Angle and Air-Speed Recorder
"A new trailing bomb-type instrument for photographically recording the flight-path angle and air speed of aircraft in unaccelerated flight is described. The instrument consists essentially of an...
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Airfoil lift with changing angle of attack
From Summary: "Tests have been made in the atmospheric wind tunnel of the National Advisory Committee for Aeronautics to determine the effects of pitching oscillations upon the lift of an airfoil. It...
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Aircraft Engine Design
From Introduction: "The subject of this paper is so broad in scope that a large volume might be devoted to it. In a short paper of this kind it is possible simply to sketch in the high lights of...
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Airplane Crashes: Engine Troubles: A Possible Explanation
The aim was to bring attention to what might be the cause of some aircraft accidents for which there was no satisfactory explanation. The author notes that in testing aircraft accidents at the Bureau...
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Airplane Balance
The authors argue that the center of gravity has a preponderating influence on the longitudinal stability of an airplane in flight, but that manufacturers, although aware of this influence, are still...
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Vortices and the Related Principles of Hydrodynamics
Here, conceptions concerning vortices are illustrated by the simplest possible examples. Mathematical formulas and similar means of presentation, which, for the most part, do not help the understanding...
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A Method for Calculating the Heat Required for Windshield Thermal Ice...
Report presenting an equation for calculating the heat flow required from the surface of an internally heated windshield in order to prevent ice accretions during flight in specified icing conditions....
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Investigation of Adjustable Supersonic Inlet in Combination With J34 Engine...
Pressure recovery in adjustable supersonic inlet combined with J34 turbojet engine up to Mach 2.0.
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Pressure Distributions and Aerodynamic Characteristics of Several...
Memorandum presenting an investigation at Mach numbers of 1.61 and 2.01 to examine the characteristics of a series of nine spoiler-type controls on a trapezoidal wing with the leading edge swept back...
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Exploratory Investigation of Performance of Experimental Fuel-Rich Hydrogen...
Memorandum presenting an exploratory investigation conducted to determine the performance characteristics of a fuel-rich hydrogen combustor; in addition, the performance of an afterburner operating...
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Investigation of an Afterburning Ramjet Using Gaseous Hydrogen as Fuel at...
Memorandum presenting an investigation conducted in the supersonic wind tunnel on a 16-inch ramjet that was equipped with an afterburner and used gaseous hydrogen for both the primary and afterburner...
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Turbojet Performance and Operation at High Altitudes With Hydrogen and JP-4...
An investigation of the effect of extremely high altitude operation on the performance and operating characteristics of two turbojet engines using gaseous hydrogen and JP-4 fuels. At extremely high...
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Experimental Investigation of a 7-Inch-Tip-Diameter Transonic Turbine
Memorandum presenting the overall performance results obtained for a 7-inch transonic turbine and a comparison with the results of a 14-inch turbine of geometrically similar design that had been...
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Heat-Transfer Measurements on a Concave Hemispherical Nose Shape With...
Memorandum presenting heat-transfer rates and pressure fluctuations at Mach numbers of 1.98 and 4.95 measured at the stagnation point of a concave hemisphere for a range of Reynolds numbers based on...
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Calculation of External-Store Loads and Correlation With Experiment
Memorandum presenting a theory for evaluating the mutual interference between a wing and tip tank as extended to apply to store-pylon configurations. By using the theory and the flow-field formulas of...
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Factors Affecting Loads at Hypersonic Speeds
Report presenting a brief summary of current loads information at hypersonic speeds and some ways of estimating the loads on aircraft components when designing an aircraft.
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Aerodynamics of Oscillating Control Surfaces at Transonic Speeds
Memorandum presenting a discussion of oscillating flap-type and all-movable controls with particular emphasis on the aerodynamic forces and moments at transonic speeds. Hinge-moment results from recent...
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Experimental Investigation of Effects of Combustion-chamber Length and Inlet...
Report presenting an investigation of the effects of afterburner-inlet total temperature, total pressure, velocity, fuel-air ratio, and afterburner combustion-chamber length on afterburner performance...
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Effects of Some Configuration Changes on Afterburner Combustion Performance
Report presenting an experimental investigation in a simulated afterburner test rig to determine the effects of some configuration variations on afterburner combustion performance. Results regarding...
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Performance of a Short Combustor at High Altitudes Using Hydrogen Fuel
Report presenting an investigation in the altitude test chamber to evaluate the performance of a 16-inch-long combustor designed for use with gaseous-hydrogen fuel. The investigation covered a range of...
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Investigation of Effect of Number and Width of Annular Flameholder Gutters on...
Memorandum presenting an investigation of the effect of the number and width of annular flame-holder gutters on afterburner performance in a 26-inch-diameter afterburner test rig. The burner inlet...
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Boundary-Layer Displacement Effects in Air at Mach Numbers of 6.8 and 9.6
"Measurements are presented for pressure gradients induced by a laminar boundary layer on a flat plate in air at a Mach number of 9.6 and for the drag of thin wings at a Mach number of about 6.8 and...
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Effect of Hinge-Line Position on the Oscillating Hinge Moments and Flutter...
Free oscillation test to determine hinge moment of trailing-edge, flap control surface with various hinge-line positions at transonic speed. Results show that oscillating amplitude has a large effect...
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Investigation of an Air-Cooled, Plug-Type, Variable-Area Exhaust Nozzle
Memorandum presenting an experimental investigation of the cooling requirements and internal thrust performance of an air-cooled, plug-type, variable-area exhaust nozzle in a turbojet-engine...
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Attenuation of Tangential-Pressure Oscillations in a Liquid-Oxygen-n-Heptane...
Attenuation of tangent-pressure oscillation in liquid-oxygen-heptane rocket engine combustion chamber using longitudinal fin. Results regarding the engine performance with injector A, effect of fins...
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Experimental Sea-Level Static Investigation of a Short Afterburner
Sea-level static testing of turbojet engine afterburner.
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Empirical Cooling Correlation for an Experimental Afterburner With an Annular...
Memorandum presenting an empirical cooling correlation for an experimental high-performance afterburner. The correlation relates the average combustion-chamber wall temperature at a station near the...
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Total-Pressure-Recovery Characteristics of a Model of the McDonnell XF3H-1...
Report presenting free jet tests of a model of the inlets and forebody of the McDonnell XF3H-1 airplane with the original and two alternate nose shapes. Results regarding the total-pressure recovery...
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An Investigation of Jet Effects on Adjacent Surfaces
"The steady pressure loads as well as the temperature change on adjacent surfaces due to the presence of a propulsive jet at subsonic speeds is shown to be insignificant. Whereas at supersonic speeds...
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Design and Experimental Investigation of a Single-Stage Turbine With a Rotor...
Memorandum presenting a design and experimental investigation of a single-stage supersonic turbine. The turbine was designed for a rotor entering relative Mach number of 2. Results regarding the...
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