Search Results

Leaching Nonsulphide Copper Ores with Sulphur Dioxide

Description: Report issued by the Bureau of Mines discussing the sulfurous acid leaching of the Southwest experiment station. Operations and analyses of the experiment station are presented. This report includes tables, illustrations, and photographs.
Date: May 1923
Creator: Van Barneveld, Charles E. & Leaver, Edmund S.
Partner: UNT Libraries Government Documents Department

Safe Mechanical Equipment for Use in Shaft Sinking

Description: Technical paper issued by the Bureau of Mines over shaft sinking safety. Safe mechanical equipment and procedures are discussed. This paper includes illustrations.
Date: May 1922
Creator: Kudlich, R. H.
Partner: UNT Libraries Government Documents Department

The Variation in Engine Power With Altitude Determined From Measurements in Flight With a Hub Dynamometer

Description: "The rate of change in power of aircraft engines with altitude has been the subject of considerable discussion. Only a small amount of data from direct measurements of the power delivered by airplane engines during flight, however, has been published. This report presents the results of direct measurements of the power delivered by a Liberty 12 airplane engine taken with a hub dynamometer at standard altitudes from zero to 13,000 feet. Six flights were made with the engine installed in a modified DH-4 airplane" (p. 323).
Date: May 7, 1928
Creator: Gove, W. D.
Partner: UNT Libraries Government Documents Department

Air traffic

Description: This report presents a recounting of the steps taken by France to establish national and international regulation over air traffic.
Date: May 1922
Creator: Sudre, G.
Partner: UNT Libraries Government Documents Department

The Short S.7 "Mussel": A Training Seaplane With 65 Hp. "Cirrus" Engine

Description: Circular presenting a description of the Short "Mussel" S.7, which is designed for use as a light training airplane of robust and simple construction. Information regarding the design, blueprints, and photographs are provided.
Date: May 1926
Partner: UNT Libraries Government Documents Department

Training Airplane "Avia B.H. 11."

Description: Circular presenting a description of the Avia B.H. 11, which is a two-seat, low-wing monoplane with a plywood fuselage. The report describes the structural details and flight performance and provides blueprints and photographs of the aircraft.
Date: May 1927
Partner: UNT Libraries Government Documents Department

Mechanical Aids to Flight

Description: This report examines the great utility and safety of using instruments when flying. Instruments can be especially useful in conditions when the pilot has trouble spatially orienting himself.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Aviation and Insurance

Description: This article considers some of the causes which hinder the development of aircraft insurance. Different risks are discussed as well as the causes of aircraft accidents. Pilot error, poor airdromes, weather conditions, poorly adapted airplanes, and engine failures are all examined and some conclusions are made.
Date: May 1922
Creator: Mayo, R. H.
Partner: UNT Libraries Government Documents Department

The Choice of Air Routes

Description: The author lists rules for the development and planning of air routes. He uses as examples India and Texas, as well as discussing the need for more landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Technical Problems of Commercial Flying

Description: The technical requirements for commercial aircraft are listed, which include: safety, economy and comfort. The author lists various methods to increase these requirements in commercial aircraft.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Stability of Airplanes

Description: The author attempts to correct the misconception that piloting an airplane requires extraordinary skill and balance. He also tries to show that airplanes are extremely stable in flight. Some of the major points covered in this article include: automatic pilots, airplanes designed to be stable, and the reliance on mathematics to help in designing stable aircraft.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Aerial Convention of October 13, 1919

Description: The aerial convention delegates are listed as well as the set of rules that were developed during the session.
Date: May 1922
Creator: Roper
Partner: UNT Libraries Government Documents Department

The Problem of Fuel Measurement: The Schiske "Konsummeter"

Description: Any measuring device, which immediately indicates the rate of fuel consumption in the desired units, has the advantage of saving considerable time and fuel, besides facilitating the adjustment of the carburetor. The Schiske "Konsummeter" (made by the "PS-Vergaser and Apparatebau A. G.") was designed from the above viewpoint.
Date: May 1925
Creator: Praetorius, K. R. H.
Partner: UNT Libraries Government Documents Department

On the Strength of Box Type Fuselages

Description: The present investigation relates to a box-type fuselage with sides consisting of thin smooth sheet metal, stiffened by longitudinal members riveted to the flanged channel-section bulkheads or transverse frames and to the semicircular corrugated corner stiffenings. The results obtained in this particular case can be applied to a great number of similar structures.
Date: May 1929
Creator: Mathar, J.
Partner: UNT Libraries Government Documents Department

Prospective Development of Giant Airplanes

Description: This report presents a survey of the latest German giant airplane projects. A description of the physical form of the airplanes, their performance, and some possible applications are provided.
Date: May 1928
Creator: Von Römer, B.
Partner: UNT Libraries Government Documents Department

Fiat C.R. 20 Pursuit Airplane

Description: The Fiat C.R. 20 has an all metal frame covered with fireproof fabric, except for the area near the engines, which is covered in duraluminum. It is armed with 4 machine guns and is capable of 280 KPH.
Date: May 1927
Partner: UNT Libraries Government Documents Department

European Commercial Aeronautics

Description: "During the months of June to September, 1924, I personally visited the principal airports of Europe and traveled as a passenger some 6500 air miles on English, French, Romanian, Polish, German and Dutch air lines in order to investigate the development of commercial aviation abroad. The results of the investigation are embodied in a series of reports, of which a summary of the general findings is given below" (p. 1).
Date: May 1925
Creator: Van Zandt, J. Parker
Partner: UNT Libraries Government Documents Department

The Gaseous Explosive Reaction at Constant Pressure: The Reaction Order and Reaction Rate

Description: The data given in this report covers the explosive limits of hydrocarbon fuels. Incidental to the purpose of the investigation here reported, the explosive limits will be found to be expressed for the condition of constant pressure, in the fundamental terms of concentrations (partial pressures) of fuel and oxygen.
Date: May 9, 1929
Creator: Stevens, F. W.
Partner: UNT Libraries Government Documents Department

All-Metal Junkers Airplane, Type F 13

Description: Circular describing the all-metal Junkers airplane, specifically the F 13 type. The primary characteristics of the airplanes are the thick cantilever Junkers wing without stay-wires and the all-metal construction. A description of the design, flight characteristics, and some photographs are provided.
Date: May 1926
Partner: UNT Libraries Government Documents Department

Alloys Similar to Duralumin Made in Other Countries Than Germany

Description: Attempts by other countries to develop patents for alloys similar to duralumin are presented. Duralumin is aluminum alloyed with 3.5-4.5% copper, 0.5% magnesium, and 0.25-1% of manganese. A description of various materials that some have attempted to patent are provided.
Date: May 1925
Creator: Meissner, K. L.
Partner: UNT Libraries Government Documents Department

Wheel Brakes and Their Application to Aircraft

Description: "The advantages to be gained from braking have not been ignored, and in the search for a suitable method many schemes have been suggested and tried. Some of the methods discussed in this paper include: 1) increasing the height of the landing gear; 2) air brakes of various forms; 3) sprags on tail skid and axle; and 4) wheel brakes. This report focuses on the design of wheel brakes and wheel brake controls" (p. 1).
Date: May 1928
Creator: Dowty, G. H.
Partner: UNT Libraries Government Documents Department

Ultra-Light Alloys and Their Utilization on Aircraft

Description: Memorandum presenting an overview of ultra-light alloys and their potential use on an aircraft. A definition of ultra-light alloys, some of the present possibilities of ultra-light alloys, and some of the principles governing the use of the alloys in aircraft are provided.
Date: May 1924
Creator: Portevin, A. M. & DeFleury, R.
Partner: UNT Libraries Government Documents Department

Determining the Velocity Distribution in the Boundary Layer of an Airfoil Fitted With a Rotary Cylinder

Description: In the closer investigation of the results obtained from a wing model with a rotary cylinder mounted in its leading edge (NACA TM's 307 and 354), the velocity distribution in the vicinity of the surface of the model was determined by a hot-wire anemometer. The results confirmed the belief that the rotary cylinder had considerable effect on the air flow, but demonstrated the fact that the direct influence of the cylinder is confined to a very thin layer in immediate proximity to the surface.
Date: May 1927
Creator: Van der Hegge Zijnen, B. G.
Partner: UNT Libraries Government Documents Department