Collection
Technical Report Archive and Image Library
119
National Advisory Committee for Aeronautics Collection
82
Office of Scientific & Technical Information Technical Reports
43
TRAIL Microcard Collection
24
Texas Attorney General Opinions
3
Texas State Publications
3
Government Documents A to Z Digitization Project
2
Government Documents General Collection
1
USDA Farmers' Bulletins
1
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171 Matching Results
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Preliminary Free-Flight Study of the Drag and Stability of a Series of Short-Span Missiles at Mach Numbers From 0.9 to 1.3
Memorandum presenting a preliminary free-flight study of the drag and stability of a series of short-span missile configurations with 80, 85, and 90 degrees of fin leading-edge sweep. Increasing the fin sweep decreased the drag markedly.
Date:
February 8, 1956
Creator:
Hall, James Rudyard
Object Type:
Report
System:
The UNT Digital Library
Factors affecting flow distortions produced by supersonic inlets
Report presenting the typical effects of flow distortions on turbojet-engine performance and how flow distortions can be reduced by reducing the distortion entering the inlet diffuser and by improving the amount of mixing that generally occurs in the subsonic diffuser. Sources of distortion in the supersonic inlet are described and steps are suggested that might be taken to reduce their effects.
Date:
February 29, 1956
Creator:
Piercy, Thomas G.
Object Type:
Report
System:
The UNT Digital Library
Impingement of water droplets on a rectangular half body in a two-dimensional incompressible flow field
From Summary: "Trajectories of water droplets moving in the ideal two-dimensional flow field ahead of a body of rectangular cross section and infinite extent in the downstream direction have been calculated by means of a differential analyzer. Data on collection efficiency and distribution of water impingement are presented."
Date:
February 1956
Creator:
Lewis, William & Brun, Rinaldo J.
Object Type:
Report
System:
The UNT Digital Library
Friction studies of graphite and mixtures of graphite with several metallic oxides and salts at temperatures to 1000 degrees F
Report presenting an experimental friction study using graphite and mixtures of graphite with lead oxide, cadmium oxide, sodium sulfate, or cadmium sulfate as solid lubricants. Runs were made at temperatures up to 1000 degrees Fahrenheit with various steel and Inconel combinations.
Date:
February 1956
Creator:
Peterson, Marshall B. & Johnson, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Summary of Scale-model thrust-reverser investigation
Report presenting an investigation to determine the performance and other characteristics of several basic types of thrust reversers. Models of three types, target, tail-pipe cascade, and ring cascade, were tested with cold flow. Results regarding target-type thrust reversers, tail-pipe-cascade thrust reversers, ring-cascade thrust reversers, and thrust modulation are provided.
Date:
February 1956
Creator:
Povolny, John H.; Steffen, Fred W. & McArdle, Jack G.
Object Type:
Report
System:
The UNT Digital Library
Influence of Copper Ions on Adherence of Vitreous Coatings to Stainless Steel
Note presenting an investigation of the effect of copper oxide in promoting the adherence of vitreous coatings to AISI type 321 stainless steel. It was found that the copper ions in the coating produced a significant increase in adherence on both pickled and sandblasted surfaces but that the effect of the copper decreased with increased firing temperature and increased firing time for the pickled specimens.
Date:
February 1956
Creator:
Moore, D. G. & Eubanks, A. G.
Object Type:
Report
System:
The UNT Digital Library
Effect of Transverse Body Force on Channel Flow With Small Heat Addition
Note presenting an analysis of the steady, compressible, inviscid channel flow to which heat is added at a cross-sectional plane and which is also subject to a transverse body force. The prime parameters governing the flow are a dimensionless heat parameter and the Mach and Froude numbers. Solutions were obtained for uniform or nonuniform heat addition at a cross-sectional plane under the simplifying assumption of either small Mach number or large Froude number.
Date:
February 1956
Creator:
Ostrach, Simon & Moore, Franklin K.
Object Type:
Report
System:
The UNT Digital Library
Wear of typical carbon-base sliding seal materials at temperatures to 700 degrees F
Report presenting wear and friction studies to show the effects on performance of temperature, type of mating material, and minor composition changes in typical carbon seal materials. Most data were obtained at a surface speed of 10,000 feet per minute, a load of 1000 grams on a 3/16-inch-radius specimen, and temperatures up to 700 degrees Fahrenheit. Wear of carbon seal materials increased rapidly with high temperatures. The effect of temperature on wear was reduced by using chromium-plated steel as the mating surface rather than stainless or tool steel.
Date:
February 1956
Creator:
Johnson, Robert L.; Swikert, Max A. & Bailey, John M.
Object Type:
Report
System:
The UNT Digital Library
Cross flows in laminar incompressible boundary layers
Report presenting an analysis derived for the three-dimensional boundary-layer flow over a flat surface with a leading edge under main-flow streamlines that are translates and representable by polynomial expressions. The boundary layers are laminar and incompressible and the profiles of their velocity components have similarity with respect to rectangular coordinates.
Date:
February 1956
Creator:
Hansen, Arthur G. & Herzig, Howard Z.
Object Type:
Report
System:
The UNT Digital Library
Bodies of revolution having minimum drag at high supersonic airspeeds
Report presenting calculations of approximate shapes of nonlifting bodies having minimum pressure foredrag at higher supersonic airspeeds. The investigation is carried out for various combinations of the conditions of given body length, base diameter, surface area, and volume.
Date:
February 1956
Creator:
Eggers, A. J., Jr.; Resnikoff, Meyer M. & Dennis, David H.
Object Type:
Report
System:
The UNT Digital Library
Wing-Body Combinations With Certain Geometric Restraints Having Low Zero-Lift Wave Drag at Low Supersonic Mach Numbers
"Several variational problems involving optimum wing and body combinations having minimum wave drags for different kinds of geometrical restraints are analyzed. Particular attention is paid to the effect on the wave drag of shortening the fuselage and, for slender axially symmetric bodies, the effect of fixing the fuselage diameter at several points or even of fixing whole portions of its shape" (p. 1).
Date:
February 1956
Creator:
Lomax, Harvard
Object Type:
Report
System:
The UNT Digital Library
Preliminary Investigation of a Family of Diffusers Designed for Near Sonic Inlet Velocities
Note presenting tests conducted with a series of diffuser shapes defined by empirical equations with constants which are related to the initial boundary-layer thickness. The shapes were designed to provide high pressure recovery at near sonic inlet Mach numbers, and tests were conducted through the mass-flow range with a variety of attached and separated initial boundary layers. Results regarding axially symmetric ducts with attached initial boundary layers, axially symmetric ducts with separated initial boundary layers, ducts with offset axes, and surface conditions are provided.
Date:
February 1956
Creator:
Scherrer, Richard & Anderson, Warren E.
Object Type:
Report
System:
The UNT Digital Library
Impingement of Water Droplets on a Rectangular Half Body in a Two-Dimensional Incompressible Flow Field
"Trajectories of water droplets moving in the ideal two-dimensional flow field ahead of a body of rectangular cross section and infinite extent in the downstream direction have been calculated by means of a differential analyzer. Data on collection efficiency and distribution of water impingement are presented" (p. 1).
Date:
February 1956
Creator:
Lewis, William & Brun, Rinaldo J.
Object Type:
Report
System:
The UNT Digital Library
Performance of Several Half-Conical Side Inlets at Supersonic and Subsonic Speeds
Report discussing an evaluation of a series of half-conical side inlets mounted on the fuselage of a supersonic aircraft at various Mach numbers. Information about the maximum total-pressure recovery, asymmetrical operation of the twin-duct system, potential reduction in stable mass-flow range, boundary-layer diverter height, and engine mass flow is described.
Date:
February 1, 1956
Creator:
Stitt, Leonard E.; Cubbison, Robert W. & Flaherty, Richard J.
Object Type:
Report
System:
The UNT Digital Library
The Origin and Distribution of Supsonic Store Interference From Measurement of Individual Forces on Several Wing-Fuselage-Store Configurations 5 - Swept-Wing Heavy-Bomber Configuration With Large Store (Nacelle). Mach Number, 2.01
Memorandum presenting a supersonic wind-tunnel investigation of store interference performed in the 4- by 4-foot supersonic pressure tunnel at a Mach number of 2.01 in which separate forces on a store and a swept-wing-fuselage combination were measured. The report presents data on a configuration which simulated a heavy-bomber airplane with a large external store.
Date:
February 13, 1956
Creator:
Carlson, Harry W. & Geier, Douglas J.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Loads on an External Store Adjacent to an Unswept Wing at Mach Numbers Between 0.75 and 1.96
Memorandum presenting an investigation in the blowdown tunnel of the pressure tunnel to determine the aerodynamic characteristics of a sting-mounted Douglas Aircraft Company store in the presence of, but not attached to, an unswept semispan cantilevered wing of aspect ratio 4.0. The influence of the store on the aerodynamic characteristics of the wing was also obtained.
Date:
February 17, 1956
Creator:
Hadaway, William M.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Principles for the Design of Jet-Engine Induction Systems
Jet engine induction systems investigations and relationship of air inlets, drag, airframe, pressure recovery, flow and interferences.
Date:
February 27, 1956
Creator:
Davis, Wallace F. & Scherrer, Richard
Object Type:
Report
System:
The UNT Digital Library
Afterburner Performance With Combustion-Chamber Lengths From 10 to 62 Inches at Several Afterburner-Inlet Temperatures
Effect of variation of combustion chamber length and inlet temperature on low pressure-loss sea level afterburner. A 70-percentage-point reduction in combustion efficiency resulted when the combustion-chamber length was reduced from 62 to 10 inches.
Date:
February 1, 1956
Creator:
Ciepluch, Carl C.; Velie, Wallace W. & Burley, Richard R.
Object Type:
Report
System:
The UNT Digital Library
Simulated Flight Investigation of Scaled-Speed Elastic Sweptwing Bomber and Fighter Models Coupled Wing Tip to Wing Tip
Memorandum presenting a wind-tunnel investigation in which dynamic models that included elastic simulation were used to study the flight characteristics of a swept-wing bomber with parasite swept-wing fighters coupled at the wing tips. The configuration is meant to represent an efficient towing arrangement whereby the operational range of fighters can be increased.
Date:
February 14, 1956
Creator:
Thompson, Robert F.
Object Type:
Report
System:
The UNT Digital Library
The nickel dip : a radioisotope study of metallic deposits in porcelain enameling
Report discussing the use of radioisotope tracer techniques to study the following phenomena: the effect of nickel dip on the deposition of cobalt metal during firing of a cobalt-bearing ground coat, the effect of surface pretreatment on the amount and distribution of nickel deposited from nickel dip on enameling iron, and the effect of application and firing of cobalt-free and cobalt-bearing enamels on the chemical form and physical distribution of nickel previously deposited on enameling iron by the nickel dip.
Date:
February 1956
Creator:
Richmond, Joseph C.; Kirkpatrick, Harry B. & Harrison, William N.
Object Type:
Report
System:
The UNT Digital Library
Experimental Investigation of the Vibrations of a Built-Up Rectangular Box Beam
Note presenting experimental modes and frequencies of a uniform built-up box beam and comparisons between experimental and theoretical frequencies. 14 natural beam frequencies obtained from vibration tests of a built-up box beam are presented.
Date:
February 1956
Creator:
Kordes, Eldon E. & Kruszewski, Edwin T.
Object Type:
Report
System:
The UNT Digital Library
Gust-load and airspeed data from one type of two-engine airplane on six civil airline routes from 1947 to 1955
Report presenting an analysis of approximately 70,000 hours of V-G data from one type of two-engine transport airplane to determine the severity and frequency of occurrence of the gust loads and gusts. The data were obtained during routine feeder-line and short-haul commercial operations in six different routes over the course of eight years. Results regarding the distribution of acceleration, gust velocity, and airspeed, confidence bends, and acceleration and gust velocity envelopes are provided.
Date:
February 1956
Creator:
Walker, Walter G.
Object Type:
Report
System:
The UNT Digital Library
Minimum wave drag for arbitrary arrangements of wings and bodies
"Studies of various arrangements of wings and bodies designed to provide favorable wave interference at supersonic speeds lead to the problem of determining the minimum possible valve of the wave resistance obtainable by any disposition of the elements of an aircraft within a definitely prescribed region. Under the assumptions that the total lift and the total volume of the aircraft are given, conditions that must be satisfied if the drag is to be a minimum are found. The report concludes with a discussion of recent developments of the theory which lead to an improved understanding of the drag associated with the production of lift" (p. 1).
Date:
February 1956
Creator:
Jones, Robert T.
Object Type:
Report
System:
The UNT Digital Library
An experimental investigation of the scale relations for the impinging water spray generated by a planing surface
Report presenting an experimental investigation to determine the scale effects of the forces from water spray generated by a flat rectangular planing surface and impinging on a collector plate representative of an aerodynamic surface or other part of a water-based airplane. Lift and drag forces on the flat rectangular planing surface and the spray-collector plate were measured.
Date:
February 1956
Creator:
McBride, Ellis E.
Object Type:
Report
System:
The UNT Digital Library