Technical Report Archive and Image Library (TRAIL) - 22,235 Matching Results

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High-pressure blowing over flap and wing leading edge of a thin large-scale 49 degree swept wing-body-tail configuration in combination with a drooped nose and a nose with a radius increase

Description: From Summary: "A 49 degree swept-wing complete model equipped for high-pressure blowing full span at two chordwise locations at the leading edge of a full-span wing and over a half-span flap has been tested in the Langley full-scale tunnel to determine the effectiveness of blowing at the leading edge as a supplementary leading-edge stall control at high lift coefficients." The effect of blowing on the lift characteristics, pitching-moment characteristics, and drag characteristics of this particular model is described.
Date: May 28, 1957
Creator: Fink, Marvin P. & McLemore, H. Clyde
Partner: UNT Libraries Government Documents Department

Transonic loads characteristics of a 3-percent-thick 60 degree delta-wing-body combination

Description: Report presenting an investigation in the transonic tunnel to determine the aerodynamic loading characteristics of a 3-percent-thick, aspect-ratio-2.06, 60 degree delta-wing-body combination at a range of Mach numbers and angles of attack. Results regarding pressure distributions, spanwise loadings, integrated wing coefficients, and tabulated pressure coefficients are provided.
Date: May 28, 1957
Creator: Swihart, John M. & Foss, Willard E., Jr.
Partner: UNT Libraries Government Documents Department

High-altitude performance of J71-A-11 turbojet engine and its components using JP-4 and gaseous-hydrogen fuels

Description: Report presenting data to determine the component and overall engine performance up to an altitude limit for the J71-A-11 (600-B36) turbojet engine. Engine operation using JP-4 fuel at Mach number 0.8 was satisfactory up to an altitude of about 60,000 to 65,000 feet, and engine operation with marginal combustion stability was maintained to an altitude of about 80,000 feet. Results regarding the altitude operating limits, component performance, overall engine performance, contribution of individual component losses to overall engine performance losses, exhaust-nozzle-area requirements, and altitude performance at rated engine conditions are provided.
Date: May 29, 1957
Creator: Smith, Ivan D. & Saari, Martin J.
Partner: UNT Libraries Government Documents Department

Transistors: Counters

Description: Abstract: "Two transistor plug-in decade counters are described, one of which operates over the SCS-7 temperature range. A transistor digital scanner with storage and parallel readout is described. It utilizes one of the plug-in decades. A simple design procedure for flip-flops is presented."
Date: May 29, 1957
Creator: Pollard, Neith
Partner: UNT Libraries Government Documents Department

Analysis of Meteorological Tower Data, April 1950 - March 1952, Brookhaven National Laboratory

Description: Report issued by the Brookhaven National Laboratory discussing data collected from two BNL meteorological towers. As stated in the introduction, "results are presented in graphic form rather than tabular form" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: June 1957
Creator: Singer, Irving A. & Raynor, Gilbert S.
Partner: UNT Libraries Government Documents Department

The combinations of thermal and load stresses for the onset of permanent buckling in plates

Description: A simple and practical method for evaluating the onset of permanent buckling in plates in the presence of combined thermal and compressive load stresses is outlined. A particular application of the method shows reasonable agreement with tests of 17-7 PH stainless-steel square tubes. The results indicate that the compressive load stress which the plate can support at the onset of permanent buckling is substantially reduced as the temperature difference of the plate and adjoining members increases.
Date: June 1, 1957
Creator: Zender, George W. & Pride, Richard A.
Partner: UNT Libraries Government Documents Department

Effect of transient heating on vibration frequencies of some simple wing structures

Description: Thermal stresses, which may result from transient heating, can cause changes in the effective stiffness of wing structures. Some effects of this change in stiffness were investigated experimentally by radiantly heating three types of simple wing structures: a uniform plate, a solid double-wedge section, and a circular-arc multiweb-wing section. Changes in stiffness were determined by measuring the changes in natural frequency of vibration during transient heating. Some comparisons are made between theoretical calculations and the measured data.
Date: June 1, 1957
Creator: Vosteen, Louis F; Mcwithey, Robert R & Thomson, Robert G
Partner: UNT Libraries Government Documents Department

Influence of crucible materials on high-temperature properties of vacuum-melted nickel-chromium-cobalt alloy

Description: A study of the effect of induction-vacuum-melting procedure on the high-temperature properties of a titanium-and-aluminum-hardened nickel-base alloy revealed that a major variable was the type of ceramic used as a crucible. Reactions between the melt and magnesia or zirconia crucibles apparently increased high-temperature properties by introducing small amounts of boron or zirconium into the melts. Heats melted in alumina crucibles had relatively low rupture life and ductility at 1,600 F and cracked during hot-working as a result of deriving no boron or zirconium from the crucible.
Date: June 1, 1957
Creator: Decker, R F; Rowe, John P & Freeman, J W
Partner: UNT Libraries Government Documents Department

Investigation at low speeds of deflectors and spoilers as gust alleviators on a model of the Bell X-5 airplane with 35 degree swept wings and on a high-aspect-ratio 35 degree swept-wing-fuselage model

Description: Results of an investigation at low speeds to determine the gust-alleviation capabilities (reduction in lift-curve slope) of spoilers and deflectors on a 35 degree swept-wing model of high aspect ratio and on a 1/4-scale model of the X-5 airplane with 35 degree swept wings indicate that deflector and spoiler-deflector types of controls can be designed to provide considerable gust alleviation for a swept-wing airplane while still maintaining stability and control.
Date: June 1957
Creator: Croom, Delwin R. & Huffman, Jarrett K.
Partner: UNT Libraries Government Documents Department

Investigation at transonic speeds of deflectors and spoilers as gust alleviators on a 35 degree swept wing: transonic bump method

Description: Report presenting an investigation in the high-speed 7- by 10-foot tunnel using the transonic bump method to determine the gust-alleviation capabilities of spoilers and deflectors when mounted on a 35 degree swept semispan wing with NACA 65A006 airfoil sections. Testing was conducted over a range of Mach numbers and angles of attack.
Date: June 1957
Creator: Croom, Delwin R. & Huffman, Jarrett K.
Partner: UNT Libraries Government Documents Department

Manufacture of Fuel Plates for the Experimental Boiling Water Reactor

Description: From Abstract: "Discussed in the paper are the production of the uranium fuel alloy, the fabrication of the cladding components from Zircaloy-2 ingot, the assembly, welding, evacuation, and sealing of the cladding billets, the jacketing of the cladding billets with steel, and the roll bonding, heat treatment, stripping, and cleaning of the fuel plates. Evaluation of the fuel plates produced is also included."
Date: June 1957
Creator: Macherey, R. E.; Bean, C. H.; Carson, N. J., Jr. & Lindgren, J. R.
Partner: UNT Libraries Government Documents Department