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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
The 1929 Rhon soaring-flight contest
The limitation of the 1929 contest to performance gliders necessitated the establishment of a formula which would make it possible to distinguish between performance gliders and school and training gliders. The sinking speed was therefore adopted as the basis for such a distinction, and the requirement was made that the sinking speed of a performance glider should not exceed 0.8 m/s. The rest of the report details the different entries with regard to design and performance. digital.library.unt.edu/ark:/67531/metadc277555/
The 1933 contest for the Deutsch de la Meurthe trophy
No Description digital.library.unt.edu/ark:/67531/metadc63516/
The 1934 contest for the Deutsch de la Meurthe trophy
This report presents a description of the rules, history and new technical innovations in the Deutsch de la Meurthe Cup race of 1934. digital.library.unt.edu/ark:/67531/metadc63460/
The 1958 He4 Scale of Temperatures: Part 1. Introduction, Part 2. Tables for the 1958 Temperature Scale
Report containing information regarding He4 vapor pressure measurement as of 1958, the recent history of the vapor pressure temperature scale, and a series of tables containing these measurements. digital.library.unt.edu/ark:/67531/metadc13148/
6144-Channel Time-of-Flight Analyzer
Report describing a 6144-channel analyzer designed and built for the purpose of analyzing time-of-flight during studies of slow neutron scattering at Hanford Laboratories. This includes descriptions of the analyzer, its logic and circuits, and its test mode. digital.library.unt.edu/ark:/67531/metadc100653/
The A.B.C. "Robin" (British) : a single-seat cabin monoplane
No Description digital.library.unt.edu/ark:/67531/metadc64615/
The A. B. Flygindustri "K 37" (Swedish Junkers) : A Low-Wing All-Metal Military Airplane
No Description digital.library.unt.edu/ark:/67531/metadc64629/
N.A.C.A. control position recorder
A new instrument is described which is capable of simultaneously recording the position of the three controls of an airplane. The records are taken photographically on a standard N.A.C.A. film drum and the instrument can be quickly installed in any airplane. digital.library.unt.edu/ark:/67531/metadc53770/
N.A.C.A. Langley field wind tunnel apparatusthe tilting manometer
A description is given of a tilting manometer designed to meet the requirements of a manometer for use in the wind tunnel at the Langley Memorial Aeronautical Laboratory. This gauge was designed to meet the requirements of a manometer in use in connection with a static pressure plate to indicate the wind speed in the tunnel. The requirements are noted. The sensitivity of the gauge must be made inversely proportional to the pressure to be measured. The gauge must be accurately and quickly set for any desired pressure. When set at the desired pressure, the extent of variation between the existing and the desired pressures may be readily estimated. In fact, this manometer is quick to adjust, is easy to read, always has the meniscus in the same position, and accurately indicates a large range of air speeds on what is a comparatively compact instrument. digital.library.unt.edu/ark:/67531/metadc53735/
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 of high natural period which is acted upon by the pressure difference of a pitot-static head. The resulting deflection of this diaphragm is recorded optically on a moving film. digital.library.unt.edu/ark:/67531/metadc53744/
N.A.C.A. Stall-Warning Device
With some airplanes the approach to the stall is accompanied by changes in the behavior, such as tail buffeting or changes in the control characteristics of the airplane so that the pilot obtains a warning of the impending stall. Vith other airplanes it is possible to approach the stall without any perceptible warning other than the reading of the air-speed meter, in which case the danger of inadvertent stalling is considerably greater. Although it is not within the scope of this paper to discuss stalling characteristics, it is desired to point out that in general the danger of inadvertent stalling is greatest with those airplanes that behave worse when the stalling occurs; that is, with airplanes in which the stall starts at the wing tips. A warning of the impending stall is desirable in any case, but is particularly desirable with airplanes of the latter type. digital.library.unt.edu/ark:/67531/metadc65017/
The A.N.E.C. IV "Missel Thrush" light airplane
A product of the Air Navigation Engineering Co., the Missel Thrush is a light airplane suitable for private ownership. It is a two seat tractor fuselage biplane with single I interplane struts designed by J. Bewsher. digital.library.unt.edu/ark:/67531/metadc279637/
The Aachen wind-tunnel balance
A description of the balance in the Aachen wind-tunnel. digital.library.unt.edu/ark:/67531/metadc63470/
Abacus for the reduction of English measures to the metric system and vice versa
This report presents a description of the abacus as well as construction details. There is also a detailed description on how to use the abacus. digital.library.unt.edu/ark:/67531/metadc53628/
Abacus giving the variation of the mean pressure of an aviation engine as a function of its speed of rotation
Comparing the results of the calculations for computing the mean pressure of an aviation engine for any number of revolutions, with those of experiment, the writer, by numerous examples, shows the perfect agreement between them. This report will show that, by means of a special abacus, an engineer can instantly plot the characteristics of an engine. digital.library.unt.edu/ark:/67531/metadc53605/
Ability of pilots to control simulated short-period yawing oscillations
No Description digital.library.unt.edu/ark:/67531/metadc58499/
Abnormal grain growth in M-252 and S-816 alloys
An experimental investigation was carried out on air- and vacuum-melted M-252 and S-816 alloys to find conditions of heating and hot-working which resulted in abnormal grain growth. The experiments were mainly limited to normal conditions of heating for hot-working and heat treatment and normal temperatures of solution treatment were used to allow grain growth after susceptibility to abnormal grain growth was developed by various experimental conditions. Results indicated that small reductions of essentially strain-free metal were the basic cause of such grain growth. digital.library.unt.edu/ark:/67531/metadc57131/
Abnormal grain growth in nickel-base heat-resistant alloys
No Description digital.library.unt.edu/ark:/67531/metadc57096/
Abnormal grain growth in S-816 alloy
No Description digital.library.unt.edu/ark:/67531/metadc57000/
Abscissas and Weights for Guassian Quadrature For N=2 to 100, and N-125, 150, 175, 200
The abscissas and weights for Gaussian Quadrature of order N = 2 to 100,and N = 125, 150, 175, and 200 are given. The abscissas are given to twenty-four places and the error is estimated to be no more than 1 unit in the last place. The weights are given to twenty-three places and the error is estimated to be no more than 1 unit in the last place. digital.library.unt.edu/ark:/67531/metadc70465/
Absolute coefficients and the graphical representation of airfoil characteristics
It is argued that there should be an agreement as to what conventions to use in determining absolute coefficients used in aeronautics and in how to plot those coefficients. Of particular importance are the absolute coefficients of lift and drag. The author argues for the use of the German method over the kind in common use in the United States and England, and for the Continental over the usual American and British method of graphically representing the characteristics of an airfoil. The author notes that, on the whole, it appears that the use of natural absolute coefficients in a polar diagram is the logical method for presentation of airfoil characteristics, and that serious consideration should be given to the advisability of adopting this method in all countries, in order to advance uniformity and accuracy in the science of aeronautics. digital.library.unt.edu/ark:/67531/metadc53725/
Absolute dimensions of Karman vortex motion
No Description digital.library.unt.edu/ark:/67531/metadc53809/
Absorbing landing shocks
Tires, steel springs, hydraulic shock absorbers, and axle travel are all examined in relation to absorbing landing shocks. digital.library.unt.edu/ark:/67531/metadc56246/
Absorption-Multistage Flash Distillation Process
No Description digital.library.unt.edu/ark:/67531/metadc11638/
Abstracts of Current Decisions on Mines and Mining: October, 1912 to March, 1913
Bulletin issued by the U.S. Bureau of Mines. From the Preface: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (p. 9). digital.library.unt.edu/ark:/67531/metadc12274/
Abstracts of Current Decisions on Mines and Mining: March to December, 1913
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12291/
Abstracts of Current Decisions on Mines and Mining: December, 1913, to September, 1914
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12299/
Abstracts of Current Decisions on Mines and Mining: October, 1914, to April, 1915
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9), digital.library.unt.edu/ark:/67531/metadc12309/
Abstracts of Current Decisions on Mines and Mining: May to September, 1915
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12319/
Abstracts of Current Decisions on Mines and Mining: October to December, 1915
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12324/
Abstracts of Current Decisions on Mines and Mining: January to April, 1916
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12332/
Abstracts of Current Decisions on Mines and Mining: May to August, 1916
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12347/
Abstracts of Current Decisions on Mines and Mining: September to December, 1916
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12350/
Abstracts of Current Decisions on Mines and Mining: January to April, 1917
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12355/
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc70474/
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc38813/
Abstracts of Current Decisions on Mines and Mining: September to December, 1917
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12362/
Abstracts of Current Decisions on Mines and Mining: May to September, 1918
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12368/
Abstracts of Current Decisions on Mines and Mining: September to December, 1918
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12373/
Abstracts of Current Decisions on Mines and Mining: January to May 1919
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc38750/
Abstracts of Current Decisions on Mines and Mining: May to August, 1919
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9). digital.library.unt.edu/ark:/67531/metadc12376/
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
Report issued by the Bureau of Mines over mining decisions made between May and August of 1917. Details of the decisions are presented and discussed. digital.library.unt.edu/ark:/67531/metadc38745/
Abstracts of Current Decisions on Mines and Mining Reported from January to May 1918
Report issued by the Bureau of Mines over mining decisions made between January and May of 1918. Details of the decisions are presented and discussed. digital.library.unt.edu/ark:/67531/metadc38748/
Abstracts pertaining to seaplanes
About 400 references pertaining to the hydrodynamic design of seaplanes have been compiled, and the information is presented in the form of abstracts classified under six main headings. digital.library.unt.edu/ark:/67531/metadc62825/
ABWR Design and Development Quarterly Progress Report: July 1 - September 30, 1961
Quarterly design and development progress report on the activities of the Army Boiling Water Reactor (ABWR) Program. digital.library.unt.edu/ark:/67531/metadc172544/
ABWR Design and Development Quarterly Progress Report, January 1 Through March 31, 1962
Quarterly design and development progress report on the activities of the Army Boiling Water Reactor (ABWR) Program. digital.library.unt.edu/ark:/67531/metadc172545/
Accelerated Laboratory Test for Determination of Slacking Characteristics of Coal
Report issued by the U.S. Bureau of Mines on laboratory testing developed to measure the slacking of coals. Testing methods and results are presented. This report includes tables and graphs. digital.library.unt.edu/ark:/67531/metadc38382/
Acceleration characteristics of a turbojet engine with variable-position inlet guide vanes
No Description digital.library.unt.edu/ark:/67531/metadc60813/
Acceleration Characteristics of R-3350 Engine Equipped with NACA Injection Impeller
Qualitative investigations have shown that use of the NACA injection impeller with the R-3350 engine increases the inertia of the fuel-injection system and, when the standard fuel-metering system is used, this increase in inertia results in poor engine acceleration characteristics. This investigation was therefore undertaken to determine whether satisfactory acceleration characteristics of the engine equipped with the injection impeller could be obtained by simple modifications to the fuel-monitoring system. The engine was operated with two types of carburetor; namely, a hydraulic-metering carburetor incorporating a vacuum-operated accelerating pump and a direct-metering carburetor having a throttle-actuated accelerating pump. The vacuum-operated accelerating pump of the hydraulic-metering carburetor was modified to produce satisfactory accelerations by supplementing the standard air chamber with an additional 75-cubic spring. The throttle-actuated accelerating pump of the direct-metering carburetor was modified to produce satisfactory accelerations by replacing the standard 0.028-inch-diameter bleed in the load-compensator balance line with a smaller bleed of 0.0225-inch diameter. The results of this investigation indicated that both carburetors can be easily modified to produce satisfactory acceleration characteristics of the engine and no definite choice between the types of carburetor and accelerating pump can be made. Use of the direct-metering carburetor, however, probably resulted in better fuel distribution to the cylinders during the acceleration period and reduced the backfire hazard because all the fuel is introduced through the injection impeller. digital.library.unt.edu/ark:/67531/metadc63808/
Acceleration Due to Gravity at the National Bureau of Standards
No Description digital.library.unt.edu/ark:/67531/metadc13155/