National Advisory Committee for Aeronautics (NACA) - 117 Matching Results

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Engine performance and the determination of absolute ceiling

Description: From Summary: "This report contains a brief study of the variation of engine power with temperature and pressure. The variation of propeller efficiency in standard atmosphere is obtained from the general efficiency curve which is developed in NACA report no. 168. The variation of both power available and power required are then determined and curves plotted, so that the absolute ceiling may be read directly from any known sea-level value of the ratio of power available to power required."
Date: January 1924
Creator: Diehl, Walter S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relative efficiency of direct and geared drive propellers

Description: This report is an extension of NACA-TR-168 and has been prepared for the National Advisory Committee for Aeronautics to show the relative values of various direct and geared drives. It is well known that in general a geared-down propeller has higher efficiency than a direct-drive propeller, but the literature on this subject does not present the data in such form that the aeronautical engineer can readily visualize the effect of gearing. This report has been prepared to show the actual net gain… more
Date: January 1924
Creator: Diehl, Walter S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reliable formulae for estimating airplane performance and the effects of changes in weight, wing area, or power

Description: This report contains the derivation and the verification of formulae for predicting the speed range ratio, the initial rate of climb, and the absolute ceiling of an airplane. Curves used in the computation are given in NACA-TR-171. Standard formulae for service ceiling, time of climb, cruising range, and endurance are also given in the conventional forms.
Date: January 1924
Creator: Diehl, Walter S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Historical Notes on Aerodynamic Research

Description: "It is obviously interesting to know the names of those who were the first contributors to aeronautical science. Therefore, without claiming to give a complete history, I present in this article a summary list of names in chronological order relating to the history of experiments on the resistance of the air and its application to aeronautics" (p. 1).
Date: August 1924
Creator: Dollfus, Charles
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Testing of Aviation Engines Under Approximate Altitude Conditions

Description: Note presenting a description of the aviation testing laboratory that has been built at the Bureau of Standards in order to test aviation engines under approximate engine conditions. A description of some of the calculations that are used to compare experimental and theoretical results are provided.
Date: December 1924
Creator: DuBois, R. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fatigue of Internal Combustion Engines

Description: Engine conditions such as pressure characteristics, temperatures, and mechanical fatigue enable the employment of a criterion of general fatigue which simultaneously takes account of both mechanical and thermal conditions, for the sake of comparing any projected engine with engines of the same type already in use.
Date: April 1924
Creator: Dumanois, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The American Airship ZR-3

Description: This airship was built by the Zeppelin Airship Company at Friedrichshafen in 1923-4, for the United States Navy, as the reparations service of the German Government in fulfillment of the treaty of peace. A description of the design, components, flight characteristics, blueprints, and photographs are provided.
Date: November 1924
Creator: Dürr, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Loss of the Dixmude

Description: The causes of the destruction of the Dixmude are discussed and some conclusions are drawn. The author believes a gasoline fire instead of a lightning strike was probably responsible, but the public believes otherwise.
Date: April 1924
Creator: Eckener, Hugo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measuring Vibration and Torque With the Oscillograph

Description: "The recent development of technical science demands maximum reliability of functioning, together with maximum utilization of construction materials. For this purpose we must know what stresses are produced during functioning. One cause of great stresses are mechanical vibrations and this report describes a method of using an oscilloscope to measure the stresses of rapidly changing phenomena" (p. 1).
Date: December 1924
Creator: Elsässer, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aeronautic Instruments

Description: "The development of aeronautic instruments. Vibrations, rapid changes of the conditions of flight and of atmospheric conditions, influence of the air stream all call for particular design and construction of the individual instruments. This is shown by certain examples of individual instruments and of various classes of instruments for measuring pressure, change of altitude, temperature, velocity, inclination and turning or combinations of these" (p. 1).
Date: February 1924
Creator: Everling, E. & Koppe, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Longitudinal oscillation of an airplane Part 1: problem and method

Description: Report presenting some theoretical calculations for determining the problems of accelerated and disturbed motion, phenomena in an accidental or intentional disturbance through the deflection of the rudder or elevator, or any other change in the conditions of flight.
Date: April 1924
Creator: Fuchs, R. & Hopf, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Problem of Liquid Fuels (for Aircraft Engines)

Description: "The crisis which troubles the world market for liquid fuel in general and for carburants in particular is doubtless one of the most serious ever experienced by modern industry. It is a national crisis of economic and political independence for countries like Italy and France. The solutions suggested for meeting the lack of liquid fuel may be summed up under two general headings: the economical use of the petroleum now available; creation of petroleum substitutes from natural sources within the… more
Date: July 1924
Creator: Gallo, Gino
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Rules for Metal Aircraft Construction

Description: "The Commissariat of Aviation deems it expedient to issue a few rules of a general character which should be followed by constructors in designing aircraft, into the manufacture of which metal enters to a considerable extent. The materials covered include: aluminum, duralumin, soft steel, high-resistance steel, in sheets, tubing, and shaped elements" (p. 1).
Date: September 1924
Creator: Guidoni, Alessandre
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Practical Method for Balancing Airplane Moments

Description: "The present contribution is the sequel to a paper written by Messrs. R. Fuchs, L. Hopf, and H. Hamburger, and proposes to show that the methods therein contained can be practically utilized in computations. Furthermore, the calculations leading up to the diagram of moments for three airplanes, whose performance in war service gave reason for complaint, are analyzed. Finally, it is shown what conclusions can be drawn from the diagram of moments with regard to the defects in these planes and wha… more
Date: February 1924
Creator: Hamburger, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Balloon Flight and Atmospheric Electricity

Description: "The air is known to be charged with electricity (chiefly positive) with reference to the earth, so that its potential increases with the altitude and the difference in potential between two points in the same vertical line, divided by the distance between them, gives a value called the "potential gradient," which may vary greatly with the altitude, the nature of the ground and the atmospheric conditions" (p. 1).
Date: July 1924
Creator: Herrera, Emilio
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Motion of Spheres in Still Fluids

Description: "The behavior of a liquid or gaseous medium, in which a solid body can move freely under the action of a force of constant magnitude and direction, is yet little known. Only in connection with a few special problems, which belong in this field, have experiments been tried and these chiefly concern technically important cases. The behavior of the simplest shaped bodies has as yet been scarcely investigated at all" (p. 1).
Date: April 1924
Creator: Hirsch, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Airfoil Thickness and Plan Form on Lateral Control

Description: This investigation was carried out for the purpose of determining the effectiveness of ailerons and tests were made on six model airfoils in the no. 1 wind tunnel of the National Advisory Committee for Aeronautics. The method consisted in measuring the rolling moments and aileron moments in the ordinary way.The results show that the thickness of the airfoil has very little effect on either the rolling moment or the hinge moment, although the resulting efficiency is somewhat higher for the taper… more
Date: 1924
Creator: Hoot, H. I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for the Instantaneous Determination of the Velocity and Direction of the Wind

Description: The laboratory instruments, which we often constructed with makeshift means, gave encouraging results and showed that they could satisfactorily meet the required conditions. By limiting ourselves to the employment of hot wires of 0.05 mm (0.002 in.) diameter, we obtained instruments which faithfully followed all the wind fluctuations of over 0.1 second and even much more rapid variations without any very great error.
Date: June 1924
Creator: Huguenard, E.; Magnan, A. & Planiol, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High Altitude Flying

Description: This note investigates the effect of high altitude or low atmospheric pressure upon the operation of an engine and the effect of the low pressure and lack of oxygen and of the very low temperatures upon the pilot and upon the performance of the airplane itself.
Date: May 1924
Creator: King, Paul B. & Carroll, Thomas
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Results of Experiments With Slotted Wings

Description: This report recounts some of the successful experiments conducted in England and Germany on slotted wings and ailerons. Wind tunnel test results are given and examples of aircraft constructed with these new wing components are described.
Date: October 1924
Creator: Lachmann, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Remarks on Building of Low-Powered Airplanes

Description: "If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land" (p. 1).
Date: January 1924
Creator: Langsdorff, Werner v.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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