National Advisory Committee for Aeronautics (NACA) - 42 Matching Results

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Fabrics for Aeronautic Construction

Description: The Bureau of Standards undertook the investigation of airplane fabrics with the view of finding suitable substitutes for the linen fabrics, and it was decided that the fibers to be considered were cotton, ramie, silk, and hemp. Of these, the cotton fiber was the logical one to be given primary consideration. Report presents the suitability, tensibility and stretching properties of cotton fabric obtained by laboratory tests.
Date: 1918
Creator: Walen, E. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Flow Through Poppet Valves

Description: Report discusses the comparative continuous flow characteristics of single and double poppet valves. The experimental data presented affords a direct comparison of valves, single and in pairs of different sizes, tested in a cylinder designed in accordance with current practice in aviation engines.
Date: 1918
Creator: Lewis, G. W. & Nutting, E. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Variation of Yawing Moment Due to Rolling

Description: The aerodynamical constants of an airplane necessary for the discussion of stability are partly observed and partly calculated. Among the calculated coefficients is n(p), which is the variation of yawing moment due to rolling. (author).
Date: 1919
Creator: Wilson, Edwin Bidwell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theory of an Airplane Encountering Gusts, 3

Description: Report presents a new method for solving linear equations developed by Bromwich, which is suited to determine the motion for any particular gust, when the machine started from equilibrium, without the trouble of determining the constants of integration in the complementary function. (author).
Date: October 15, 1918
Creator: Wilson, Edwin Bidwell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The General Theory of Blade Screws Including Propellers, Fans, Helicopter Screws, Helicoidal Pumps, Turbo-Motors, and Different Kinds of Helicoidal Blades

Description: Report presents a theory which gives a complete picture and an exact quantitative analysis of the whole phenomenon of the working of blade screws, but also unites in a continuous whole the entire scale of states of work conceivable for a blade screw. Chapter 1 is devoted to the establishment of the system of fundamental equations relating to the blade screw. Chapter 2 contains the general discussion of the 16 states of work which may establish themselves for a blade screw. Chapter 3 is devoted … more
Date: 1919
Creator: de Bothezat, George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Research on Air Propellers, 2

Description: This report is a continuation of NACA Technical Report 14. It presents the results of an experimental investigation on the performance of air propellers which was divided into five parts, as follows: (1) Tests under conditions of flight on 16 model propellers of different forms, sections, or pitch ratios from those of Technical Report 14; (2) Tests under conditions of flight on one model propeller of variable pitch; (3) Tests under conditions of flight on three sets of right and left hand model… more
Date: 1919
Creator: Durand, William F. & Lesley, E. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Airplane Tensiometer

Description: Certain parts of an airplane are subjected not only to the stresses imposed by the aerodynamic or flying load, but also to the initial stresses, caused by the tension in the stay and drift wires. Report describes a tensiometer that measures such stresses which is simple in construction, accurate, and easily and quickly operated even by inexperienced persons. Two sizes of the instrument are available. One is suitable for wires up to one-fourth inch in diameter and the other for wires from one-fo… more
Date: 1919
Creator: Larson, L. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The altitude effect on air speed indicators

Description: The report present the results of a theoretical and experimental study of the effect, on the performance of air speed indicators, of the different atmospheric conditions experienced at various altitudes.
Date: 1917~
Creator: Hersey, Mayo D.; Hunt, Franklin L. & Eaton, Herbert N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on Behavior of Aeroplanes in Gusts

Description: Part 1 presents the results of a wind tunnel test of a biplane model with an 18 inch span. The lift, drift, and pitching moment were measured for a series of angles of incidence corresponding to the maximum possible changes of flight attitude. Only the discussion of symmetrical or longitudinal changes is given. From the observed rate of variation of the forces and pitching moment, it was possible to calculate the derivatives needed in the complete theory of longitudinal stability in still air.
Date: October 7, 1915
Creator: Hunsaker, Jerome C. & Wilson, Edward Bidwell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of Pitot Tubes

Description: Report describes the principles of operation and characteristics of some of the instruments which have been devised or used to measure both low and high speeds of aeroplanes. Since the pitot tube is the instrument which has been most commonly used in the United States and Great Britain as a speedometer for aeroplanes, it is treated first and somewhat more fully than the others.
Date: 1917
Creator: Herschel, W. H. & Buckingham, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Description: Among other factors which affect the horsepower of an airplane engine are the atmospheric pressure, and consequently the altitude at which the engine is working, and the compression ratio, or cylinder volume divided by clearance volume. The tests upon which this report is based were selected from a large number of runs made during the intercomparison of various gasolines to determine the variation of horsepower with altitude at three different compression ratios. The test results and conclusion… more
Date: 1919
Creator: Dickinson, H. C.; James, W. S.; Anderson, G. V. & Brinkerhoff, V. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metering Characteristics of Carburetors

Description: Report presents the results of an extensive experimental investigation of the performance of different types of carburetors as effecting the maintenance under all conditions of correct ratio between the weights of fuel and air. It also gives a description of the Bureau of Standards carburetor test plant, test equipment and measuring instruments used to determine the metering characteristics of carburetors.
Date: 1919
Creator: Tice, Percival S. & Dickinson, H. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Limiting Velocity in Falling from a Great Height

Description: The purpose of this report is to give a simple treatment of the problem of calculating the final or limiting velocity of an object falling in vertical motion under gravity in a resisting medium. The equations of motion are easily set up and integrated when the density of the medium is constant and the resistance varies as the square of the velocity. The results show that the fundamental characteristics of the vertical motion under gravity in a resisting medium is the approach to a terminal or l… more
Date: 1919
Creator: Wilson, Edwin Bidwell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Airplane stress analysis

Description: Report presents stress analysis of individual components of an airplane. Normal and abnormal loads, sudden loads, simple stresses, indirect simple stresses, resultant unit stress, repetitive and equivalent stress, maximum steady load and stress are considered.
Date: January 1918
Creator: Zahm, A. F. & Crook, L. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Design of Wind Tunnels and Wind Tunnel Propellers

Description: Report discusses the theory of energy losses in wind tunnels, the application of the Drzewiecki theory of propeller design to wind tunnel propellers, and the efficiency and steadiness of flow in model tunnels of various types.
Date: 1919
Creator: Warner, Edward P.; Norton, F. H. & Hebbert, C. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of Alcogas Aviation Fuel With Export Aviation Gasoline

Description: Mixtures of gasoline and alcohol when used in internal combustion engines designed for gasoline have been found to possess the advantage of alcohol in withstanding high compression without "knock" while retaining advantages of gasoline with regard to starting characteristics. Test of such fuels for maximum power-producing ability and fuel economy at various rates of consumption are thus of practical importance, with especial reference to high-compression engine development. This report discusse… more
Date: November 25, 1919
Creator: Gage, V. R.; Sparrow, S. W. & Harper, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Temperatures in Spark Plugs Having Steel and Brass Shells

Description: "Brass has often been assumed superior to steel for spark plug shells because of its greater heat conductivity. The measurements described in this report prove the contrary, showing that the interior of a spark plug having a brass shell is from 50 degrees to 150 degrees c. (90 degrees to 270 degrees f.) hotter than that of a similar steel plug. It is to be concluded that steel is to be preferred to brass for spark plug shells. This report embodies the results of measurements taken of electrodes… more
Date: 1919
Creator: Cragoe, C. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Analysis of Airplane Radiator Problems

Description: Report embodies the results of a very extensive research, both theoretical and experimental, into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: 1919
Creator: Dickinson, H. C.; James, W. S. & Kleinschmidt, R. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Discussion of Test Methods for Radiators

Description: Report describes the methods and apparatus developed and used in the extensive experimental research into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: 1919
Creator: Dickinson, H. C.; James, W. S. & Brown, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Airplane Dopes and Doping

Description: Report details some examples of dopes and doping on airplanes and balloons and the various properties of different materials. Topics covered include cellulose nitrate dopes, cellulose acetate dopes, dope covers, application of dopes, and fireproof dopes
Date: 1919
Creator: Smith, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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