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Pressure distribution on wing ribs of the VE-7 and TS airplanes in flight Part 2: pull-ups

Description: This paper is the second of a series of notes, each of which presents the complete results of pressure distribution tests made at Langley Field by the National Advisory Committee for Aeronautics, on wing and tail ribs of the VE-7 and TS airplanes for a particular maneuver of flight. The results for pull-ups are presented in the form of curves which show the variation of pressure distribution, total loads, normal acceleration and center of pressure with respect to time.
Date: January 1928
Creator: Rhode, R. V.
Partner: UNT Libraries Government Documents Department
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The Determination of Several Spray Characteristics of a High-Speed Oil Engine Injection System with an Oscilloscope

Description: An investigation was conducted to determine the injection lag, duration of injection, and spray start and cut-off characteristics of a fuel injection system operated on an engine and injecting fuel into the atmosphere. The results indicated that for the injection system investigated, the injection lag, in crank degrees, decreased with increase in engine speed for a constant quantity of fuel discharged, but was not affected at constant engine speed by varying the fuel quantity from approximately… more
Date: September 1928
Creator: Hicks, Chester W. & Moore, Charles S.
Partner: UNT Libraries Government Documents Department
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An automatic speed control for wind tunnels

Description: Described here is an automatic control that has been used in several forms in wind tunnels at the Washington Navy Yard. The form now in use with the 8-foot tunnel at the Navy Yard is considered here. Details of the design and operation of the automatic control system are given. Leads from a Pitot tube are joined to an inverted cup manometer located above a rheostat. When the sliding weight of this instrument is set to a given notch, say for 40 m.p.h, the beam tip vibrates between two electric c… more
Date: February 1928
Creator: Zahm, A. F.
Partner: UNT Libraries Government Documents Department
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Resistance of streamline wires

Description: "This note contains the results of tests to determine the resistance of four sizes of streamline wire. The investigation was conducted in the six-inch wind tunnel of the National Advisory Committee for Aeronautics. The tests were made at various velocities and it was found that the resistance of streamline wires was considerably less than that of round wires of equivalent strength. Scale effect was also found since, with an increase of Reynolds Number, a decrease in the resistance coefficient w… more
Date: March 1928
Creator: DeFoe, George L.
Partner: UNT Libraries Government Documents Department
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The Variation in Pressures in the Cockpit Fan Airplane in Flight

Description: "The results of an investigation to determine the pressures in the open cockpit of a Vought VE-7 airplane are given. The information has been considered valuable on account of its possible effect upon the operation of instruments, particularly altimeters, due to a variation from the true static pressure which is induced by the passage of the airplane through the air. The observed values are small and the effect upon instruments is inconsiderable" (p. 1).
Date: November 1928
Creator: Carroll, Thomas & McAvoy, William H.
Partner: UNT Libraries Government Documents Department
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Drag of exposed fittings and surface irregularities on airplane fuselages

Description: Measurements of drag were made on fittings taken from a typical fuselage to determine whether the difference between the observed full size fuselage drag and model fuselage drag could be attributed to the effects of fittings and surface irregularities found on the full size fuselage and not on the model. There are wide variations in the drag coefficients for the different fittings. In general those which protrude little from the surface or are well streamlined show very low and almost negligibl… more
Date: March 1928
Creator: Wood, Donald H.
Partner: UNT Libraries Government Documents Department
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Notes on the Geology of Upper Nizina River Alaska

Description: Introduction: It is not intended to give here a full account of the geology of the district but rather to present certain new features that were observed during the season, with enough of the general geology, which is already well known and fully described in other publications, to make them understandable.
Date: 1928
Creator: Moffit, Fred H.
Partner: UNT Libraries Government Documents Department
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Studies of Basin-Range Structure

Description: From preface: This paper represents the partial fruition of a broad plan to reexamine critically the subject of Basin-Range structure.
Date: 1928
Creator: Gilbert, Grove Karl
Partner: UNT Libraries Government Documents Department
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Production and Development Problems in the Powell Oil Field, Navarro County, Texas

Description: From Introduction: "The Mexia-Powell fault fields have long held the attention of the oil industry, and this report proposes to present information on these fields and to interpret it for the consideration and guidance of all persons concerned in further development of the area. Detailed study of this field was made primarily to obtain a better working knowledge of the major features, involving structural conditions, the character and nature of the Woodbine pay sand, and the source of water."
Date: 1928
Creator: Hill, H. B. & Sutton, Chase E.
Partner: UNT Libraries Government Documents Department
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Leakage from High-Pressure Natural-Gas Transmission Lines

Description: From Scope of Report: "With the cooperation of the Natural Gas Association of America, therefore, the Bureau of Mines has made a scientific study of leakage losses. The fundamental purpose of a study has been to gather information that will aid operating companies in their leakage problems and as a result to conserve natural gas for domestic and industrial consumption instead of allowing it dissipated into the air."
Date: 1928
Creator: Rawlins, E. L. & Wosk, L. D.
Partner: UNT Libraries Government Documents Department
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Metal-Mine Accidents in the United States During the Calendar Year 1926

Description: Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1928
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Coal-Mine Fatalities in the United States, 1927

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1928
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Precipitation of Lead and Copper from Solution on Sponge Iron

Description: From abstract of Bulletin: "The results of the experiments described in this bulletin are largely a record of the behavior of sponge iron as precipitant of lead and copper under laboratory conditions comparable to those that would obtain in a commercial plant were it attempted to secure the maximum contact of surface between solution and precipitant."
Date: 1928
Creator: Oldright, G. L.; Keyes, H. E.; Miller, Virgil & Sloan, W. A.
Partner: UNT Libraries Government Documents Department
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Quarry Accidents in the United States During the Calendar Year 1926

Description: Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).
Date: 1928
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Tabulated Analyses of Representative Crude Petroleums of the United States

Description: From Scope of Report: "The present bulletin therefore can be considered as one of series which, taken as a whole, will present a comprehensive picture of the characteristics of crude petroleum. Its main purpose is to present analyses of more than 300 typical crude oils, all produced within the United States."
Date: 1928
Creator: Smith, N. A. C. & Lane, E. C.
Partner: UNT Libraries Government Documents Department
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Five Hundred Tests of Various Coals in House-Heating Boilers

Description: From Introduction Purpose of Tests: "The tests on which this report is based were made during or before 1917 to obtain a measure of relative heating value and burning characteristics of the various fuels when burned in domestic heating furnaces with attendance comparable to that given ordinarily. In all, 184 different shipments of coals, of which 172 were from various mines in this country, were burned in four low-pressure heating boilers; 534 individual tests were made. The primary object of t… more
Date: 1928
Creator: Nicholls, P.; Flagg, S. B. & Augustine, C. E.
Partner: UNT Libraries Government Documents Department
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Report of the Twentieth National Conference on Weights and Measures, 1927

Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: 1928
Creator: United States. Bureau of Standards.
Partner: UNT Libraries Government Documents Department
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Production of High-Alumina Slags in the Blast Furnace

Description: Technical report issued by the U.S. Bureau of Mines discussing the results of investigations studying the effects of alumina composition on the viscosity of iron slag.
Date: 1928
Creator: Joseph, T. L. (Thomas Leonard), b. 1894; Kinney, S. P. (Selwyne Perez), 1890-1976 & Wood, C. E. (Carl Edwin), b. 1900
Partner: UNT Libraries Government Documents Department
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Thermodynamic Properties of Oxygen and Nitrogen

Description: Report issued by the Bureau of Mines discussing the thermodynamics of oxygen and nitrogen. Properties of these elements and methods of estimating thermodynamic data are presented. This report includes tables.
Date: 1928
Creator: Millar, Russell W. & Sullivan, John D.
Partner: UNT Libraries Government Documents Department
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Measuring the Variation of Ground Resistivity with a Megger

Description: Technical paper issued by the Bureau of Mines over tests conducted on ground resistivity with a megger. The results of the tests are presented and discussed. This paper includes tables, and illustrations.
Date: 1928
Creator: Lee, F. W.
Partner: UNT Libraries Government Documents Department
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Geophysical Prospecting: Some Electrical Methods

Description: Technical paper issued by the Bureau of Mines over experiments in electrical methods. The methods and equipment used are presented and described. This paper includes tables, illustrations, and photographs.
Date: 1928
Creator: Eve, A. S. & Keys, D. A.
Partner: UNT Libraries Government Documents Department
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Experiments in Underground Communication Through Earth Strata

Description: Technical paper issued by the Bureau of Mines over studies in mine safety and communication. The methods and equipment used in the studies are presented and discussed. This paper includes tables, illustrations, and photographs.
Date: 1928
Creator: Ilsley, L. C.; Freeman, H. B. & Zellers, D. H.
Partner: UNT Libraries Government Documents Department
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Savoia Marchetti "S 64" Airplane

Description: The S 64 is a large monoplane with an aspect ratio of 7. It has a cantilever wing made of a single piece, entirely of wood. The wing has three spars with a covering of plywood. The engine is mounted high over the wing's center. It was designed for long distance transatlantic flights.
Date: August 1928
Creator: Victor, Maurice
Partner: UNT Libraries Government Documents Department
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