Technical Report Archive & Image Library (TRAIL) - 32,762 Matching Results

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Instability Considerations for Various Difference Equations Derived from the Diffusion Equation

Description: From abstract: "This paper is concerned with instability analysis of various difference equations whose solutions represent the solution of a given diffusion equation where "a" is positive under stated initial and boundry conditions."
Date: October 1954
Creator: Evans, George W.; Brousseau, R. J. & Kierstead, Ralph
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instability of a Pinched Fluid with a Longitudinal Magnetic Field

Description: The stability of a pinched plasma equilibrium with a longitudinal magnetic field superimposed on the characteristic azimuthal magnetic field of the pinch current is studied theoretically. The linearized solutions are developed as helical perturbations of the plasma surface, and the behavior of these is given for the different cases of uniform longitudinal, longitudinal field zero inside the plasma, and for helices of the same and opposite sense to the helix which describes the total magnetic fi… more
Date: November 1953
Creator: Kruskal, Martin D. (Martin David), 1925-2006 & Tuck, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instability of Outstanding Flanges Simply Supported at One Edge and Reinforced by Bulbs at Other Edge

Description: Note presenting a determination of the compressive buckling stress of outstanding flanges reinforced by bulbs using the torsion-bending theory for flanges with 54 shapes and a range of lengths. The results were analyzed to determine the shape of flange that gave the greatest support to the structure to which it was attached.
Date: December 1947
Creator: Goodman, Stanley & Boyd, Evelyn
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Installation and Correction of Compasses in Airplanes

Description: "The saving of time that results from flying across country on compass headings is beginning to be widely recognized. At the same time the general use of steel tube fuselages has made a knowledge of compass correction much more necessary than was the case when wooden fuselages were the rule. This paper has been prepared primarily for the benefit of the pilot who has never studied navigation and who does not desire to go into the subject more deeply than to be able to fly compass courses with co… more
Date: August 1927
Creator: Schoeffel, M. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instantaneous ultraviolet knock spectra correlated with high-speed photographs

Description: Report presenting an investigation to obtain a record of any chemical changes directly associated with knock in a spark-ignition engine on a greatly magnified time scale by means of coordinated high-speed motion pictures and spectrograms.
Date: August 1947
Creator: Hirshfeld, M. A. & Miller, Cearcy D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instantaneous Velocity Profile Measurement by Photography

Description: The following is taken from ORNL-2257, Instantaneous Velocity Profile Measurement by Photography, by R. E. Lynch, L. D. Palmer, and G. M. Winn. This report is in in preparation status; and errors, inconsistances, and omissions in he language, as well as in the technical aspects, may exist. The technique of using phosphorescent particles to enable photographic determination of qualitative and quantitative instantaneous velocity profiles is covered by AEC Patent Application No. SN-710, 371 issued… more
Date: August 17, 1959
Creator: Lynch, F. E.; Palmer, L. D.; Winn, G. M. & Hoffman, H. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Institutional Analysis of Community-based Marine Resource Management Initiatives in Hawai'i and American Samoa

Description: From executive summary: This document provides and analysis of two fisheries policies designed to develop community-based marine research management insitutions in the Western Pacific Region of the United States as delineated in the Magnuson-Stevens Fishery Conservation and Management Act.
Date: November 2012
Creator: Richmond, Laurie & Levine, Arielle
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Institutional Plan for Developing National Standards: With Special Reference to Environment, Safety, and Health

Description: From Abstract: "This plan was commissioned to provide a framework for the development of all essential non-nuclear energy-related, environmental, safety, and health (ES&H) standards for the private sector to coincide with the commercialization of energy technologies."
Date: September 1979
Creator: Steiner, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instruction Manual, Mercury Relay Pulse Generator Model 1-1212C

Description: The Model Q-1212C Pulser is a single frequency (60 pps) generator whose output waveform is characterized by a rise-time of less than 4 mµsec and, depending upon the method of termination, an exponential decay having a time constant of 300 or 600µsec. The waveform approximates that produced by a radiation detector. The waveform approximates that produced by a radiation detector. The maximum available output from the instrument is 10 volts, positive or negative polarity, and is continuously adjus… more
Date: September 20, 1960
Creator: Fairstein, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instructions for the Operation of an ORACLE Code for a Monte Carlo Solution of the Transport Problem for Gamma Rays Incident Upon a Slab

Description: A program has been coded for the ORACLE which will solve, using Monte Carlo technique, the transport problem for monodirectional, monoenergetic gamma radiation incident at an angle Θ, upon an infinite laminated slab of finite thickness. Each of the laminations (or regions) is itself an infinite, homogeneous slab of finite thickness. The code is designed to give estimates of energy deposition, energy flux, tissue dose rate, reflected and transmitted energy current, and the angular and energy dis… more
Date: October 26, 1960
Creator: Aulender, S. & Trubey, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Instrument Employing a Coronal Discharge for the Determination of Droplet-Size Distribution in Clouds

Description: From Summary: "A flight instrument that uses electric means for measuring the droplet-size distribution in above-freezing clouds has been devised and given preliminary evaluation in flight. An electric charge is placed on the droplets and they are separated aerodynamically according to their mass. Because the charge placed on the droplets is a. function of the droplet size, the size spectrum can 'be determined by measurement of the charge deposited on cylinders of several different sizes placed… more
Date: September 1951
Creator: Brun, Rinaldo J.; Levine, Joseph & Kleinknecht, Kenneth S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrument-flight results obtained with a combined-signal flight indicator modified for helicopter use

Description: Report presenting flight testing of a commercially available flight indicator that combines heading, bank-angle, fuselage-pitch-attitude, and potentially altitude and radio-aid information in order to determine its suitability for helicopter instrument flying. The indicator was installed in the instrument panel of a helicopter meant for blind flying and was evaluated by performing prescribed maneuvers with conventional instruments and the combined-signal flight indicator. The indicator was foun… more
Date: August 1952
Creator: Crim, Almer D.; Reeder, John P. & Whitten, James B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrument Flight Trials with Helicopter Stabilized in Attitude About Each Axis Individually

Description: Note presenting flight investigations of single-axis attitude stabilization during low-speed instrument approaches. A single-rotor helicopter that had been modified to include an electronic control system was used in the investigation. Results regarding heading stabilization, pitch stabilization, and roll stabilization are provided.
Date: January 1957
Creator: Salmirs, Seymour & Tapscott, Robert J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An instrument for estimating tautness of doped fabrics on aircraft

Description: Technical note presenting the design and use of a spring-loaded tautness meter that can be used in both horizontal and vertical positions to compare the tautness of various panels. Results of tests made on the fabric coverings of various airplanes are reported and discussed.
Date: September 1939
Creator: Kline, Gordon M. & Schiefer, Herbert F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrument for measuring engine clearance volumes

Description: With the advent of the V type engine, a new method to measure the clearance volume in cylinders was needed. It was suggested that this measurement could be made by a process which consisted essentially of simultaneously changing both a known and unknown volume of gas by a known amount and then calculating the magnitude of the unknown from the resulting difference in pressure between the two. An instrument based on this design is described.
Date: December 1920
Creator: Sparrow, S. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrument for Measuring the Wall Shearing Stress of Turbulent Boundary Layers

Description: "It is shown that at a smooth wall in a turbulent boundary layer the velocity profile next to the wall is dependent, aside from the material constants of the flowing medium, only on the shearing stress transmitted to the wall, even with pressure rise or with pressure drop. Consequently, the heat transfer of a small element that is built into the wall and has a higher temperature than that of the flowing medium is a measure of the wall shearing stress. Theoretical considerations indicate that th… more
Date: May 1950
Creator: Ludwieg, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An instrument for recording the position of airplane control surfaces

Description: N.A.C.A. has developed an instrument which makes a continuous record of the angular position of the control surfaces of an airplane, not only in steady flight but during acrobatics as well. It has proven useful in researches into stability and controllability, and from records obtained from it many otherwise obscure details of piloting technique have been available for the instruction of pilots, from novices to seasoned experts.
Date: August 1923
Creator: Ronan, K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Instrument for the Determination of Rain Densities in Flight

Description: Report presenting an investigation to develop an instrument for the determination of rain densities in this range in flight. The major requirements for the instrument are ease of operation, minimum weight and bulk, rapid response, and simplicity of installation.
Date: May 1943
Creator: Bemis, John R. & Houghton, Henry G., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrument to Measure the Initial Deformation of Rock Around Underground Openings

Description: Report issued by the Bureau of Mines over development of the tunnel stress relaxation gage. As stated in the introduction, "this report summarizes development and modification of a tunnel stress relaxation gage (TSR) designed to measure initial and long-term deformation around underground excavations" (p. 1). This report includes tables, illustrations, and photographs.
Date: 1978
Creator: Beus, Michael J.; Phillips, Earl L. & Waddell, Galen G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrumentation and calibration technique for flight calibration of angle-of-attack systems on aircraft

Description: From Summary: "Data are presented on the instrumentation and calibration technique used in determining the position error of angle-of-attack sensors mounted on the fuselage of a 35 degree swept-wing fighter airplane. The true angle of attack was determined by the use of a nose boom with five angle-of-attack vanes spaced 20 inches apart on alternate sides of the boom. Errors due to boom bending, upwash around the boom, and vane floating angle were measured and corrections applied to all indicate… more
Date: December 5, 1952
Creator: McFadden, Norman M.; Holden, George R. & Ratcliff, Jack W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Instrumentation and Control of the Brookhaven Nuclear Reactor

Description: Safe startup and operation of the nuclear reactor requires neutron sensing instruments to cover a range of about 10^9. This coverage is obtained by a counting rate meter, a period meter, and a high level power indicator. At normal operating levels, the reactor is regulated by the high level power controller and protected by the high level trips. Emergency shutdown of the reactor can be initiated by any one of the 54 different conditions. Since these safety circuits are almost 100% "fail safe",… more
Date: unknown
Creator: Binns, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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