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  Partner: UNT Libraries Government Documents Department
 Decade: 1910-1919
 Serial/Series Title: NACA Technical Reports
 Collection: Technical Report Archive and Image Library
Aerodynamic coefficients and transformation tables

Aerodynamic coefficients and transformation tables

Date: January 1, 1918
Creator: Ames, Joseph S
Description: The problem of the transformation of numerical values expressed in one system of units into another set or system of units frequently arises in connection with aerodynamic problems. Report contains aerodynamic coefficients and conversion tables needed to facilitate such transformation. (author).
Contributing Partner: UNT Libraries Government Documents Department
Aerofoils and aerofoil structural combinations

Aerofoils and aerofoil structural combinations

Date: January 1, 1918
Creator: Gorrell, Edgar S & Martin, H S
Description: Report presents results of wind tunnel tests of cambered aerofoils and body-wing combinations used for biplanes. Aerodynamic characteristics including drag, lift-drift ratio and stability derivatives are given.
Contributing Partner: UNT Libraries Government Documents Department
Aeronautic Power Plant Investigations

Aeronautic Power Plant Investigations

Date: January 1, 1917
Creator: Dickinson, H. C.
Description: Report presents the design of radiators, spark plugs and test equipment used to test the performance of aeronautic engines at high altitudes.
Contributing Partner: UNT Libraries Government Documents Department
Airplane dopes and doping

Airplane dopes and doping

Date: January 1, 1919
Creator: Smith, W H
Description: Cellulose acetate and cellulose nitrate are the important constituents of airplane dopes in use at the present time, but planes were treated with other materials in the experimental stages of flying. The above compounds belong to the class of colloids and are of value because they produce a shrinking action on the fabric when drying out of solution, rendering it drum tight. Other colloids possessing the same property have been proposed and tried. In the first stages of the development of dope, however, shrinkage was not considered. The fabric was treated merely to render it waterproof. The first airplanes constructed were covered with cotton fabric stretched as tightly as possible over the winds, fuselage, etc., and flying was possible only in fine weather. The necessity of an airplane which would fly under all weather conditions at once became apparent. Then followed experiments with rubberized fabrics, fabrics treated with glue rendered insoluble by formaldehyde or bichromate, fabrics treated with drying and nondrying oils, shellac, casein, etc. It was found that fabrics treated as above lost their tension in damp weather, and the oil from the motor penetrated the proofing material and weakened the fabric. For the most part the film of ...
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Airplane Stress Analysis

Airplane Stress Analysis

Date: January 1, 1918
Creator: Zahm, A F & Crook, L H
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.
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Carburetor design - a preliminary study of the state of the art

Carburetor design - a preliminary study of the state of the art

Date: January 1, 1917
Creator: Lucke, Charles Edward & Willhofft, Friederich Otto
Description: Report presents a preliminary study of the state of the art of the design of carburetors for gasoline engines used in aeronautic, marine and land transportation service.
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The Design of Wind Tunnels and Wind Tunnel Propellers

The Design of Wind Tunnels and Wind Tunnel Propellers

Date: January 1, 1919
Creator: Warner, Edward P; Norton, F H & Hebbert, C M
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.
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Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Date: January 1, 1919
Creator: Dickinson, H C; James, W S; Anderson, G V & Brinkerhoff, V W
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 conclusions are presented in this report.
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Experimental research on air propellers

Experimental research on air propellers

Date: January 1, 1918
Creator: Durand, William F
Description: The purposes of the experimental investigation on the performance of air propellers described in this report are as follows: (1) the development of a series of design factors and coefficients drawn from model forms distributed with some regularity over the field of air-propeller design and intended to furnish a basis of check with similar work done in other aerodynamic laboratories, and as a point of departure for the further study of special or individual types and forms; (2) the establishment of a series of experimental values derived from models and intended for later use as a basis for comparison with similar results drawn from certain selected full-sized forms and tested in free flight.
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Experimental researches on the resistance of air

Experimental researches on the resistance of air

Date: January 1, 1917
Creator: Marchis, L
Description: Report presents the experimental results of the resistance of air of a body moving in relative movement to the air with which it is surrounded.
Contributing Partner: UNT Libraries Government Documents Department
Fabrics for aeronautic construction

Fabrics for aeronautic construction

Date: January 1, 1918
Creator: Walen, E D
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.
Contributing Partner: UNT Libraries Government Documents Department
General Analysis of Airplane Radiator Problems

General Analysis of Airplane Radiator Problems

Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Kleinschmidt, R V
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.
Contributing Partner: UNT Libraries Government Documents Department
General Discussion of Test Methods for Radiators

General Discussion of Test Methods for Radiators

Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Brown, W B
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.
Contributing Partner: UNT Libraries Government Documents Department
General specifications covering requirements of aeronautic instruments

General specifications covering requirements of aeronautic instruments

Date: January 1, 1917
Creator: unknown
Description: Report includes specifications for the use and production of instruments used in the navigation and operation of aircraft. Specifications are included for the following instruments: barometer or altimeter, compass, air speed meter, inclinometer, drift meter, tachometer, oil gauge, oil pressure gauge, gasoline gauge, gasoline flow indicator, distance indicator, barograph, angle of attack indicator, radiator temperature indicator, gasoline feed system pressure indicator, sextant, airplane director.
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Investigation of Pitot tubes

Investigation of Pitot tubes

Date: January 1, 1917
Creator: Herschel, W H & Buckingham, E
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.
Contributing Partner: UNT Libraries Government Documents Department
An investigation of the elements which contribute to statical and dynamical stability, and of the effects of variation in those elements

An investigation of the elements which contribute to statical and dynamical stability, and of the effects of variation in those elements

Date: January 1, 1918
Creator: Klemin, Alexander; Warner, Edward P & Denkinger, George M
Description: Part 1 gives details of models tested and methods of testing of the Eiffel 36 wing alone and the JN2 aircraft. Characteristics and performance curves for standard JN are included. Part 2 presents a statistical analysis of the following: lift and drag contributed by body and chassis tested without wings; lift and drag contributed by tail, tested without wings; the effect on lift and drift of interference between the wings of a biplane combination; lift and drag contributed by the addition of body, chassis, and tail to a biplane combination; total parasite resistance; effect of varying size of tail, keeping angle of setting constant; effect of varying length of body and size of tail at the same time, keeping constant moment of tail surface about the center of gravity; forces on the tail and the effects of downwash; effect of size and setting of tail on statical longitudinal stability effects of length of body on stability; the effects of the various elements of an airplane on longitudinal stability and the placing of the force vectors. Part 3 presents the fundamental principals of dynamical stability; computations of resistance derivatives; solution of the stability equation; dynamical stability of the Curtiss JN2; tabulation ...
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Investigations of Balloon and Aeroplane Fabrics

Investigations of Balloon and Aeroplane Fabrics

Date: January 1, 1917
Creator: Gibbons, Willis A & Smith, Omar H
Description: Report presents the experimental results of fabrics used for balloons and aeroplanes. Tensile properties, surface roughness, skin friction, flammability, permeability, and water absorption were tested for different combinations of materials.
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The Kiln Drying of Wood for Airplanes

The Kiln Drying of Wood for Airplanes

Date: January 1, 1919
Creator: Tiemann, Harry D
Description: This report is descriptive of various methods used in the kiln drying of woods for airplanes and gives the results of physical tests on different types of woods after being dried by the various kiln-drying methods.
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The Limiting Velocity in Falling from a Great Height

The Limiting Velocity in Falling from a Great Height

Date: January 1, 1919
Creator: Wilson, Edwin Bidwell
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 limiting velocity, whether the initial downward velocity is less or greater than the limiting velocity. This method can be used to calculate the terminal velocity of a bomb trajectory.
Contributing Partner: UNT Libraries Government Documents Department
Meteorology and aeronautics

Meteorology and aeronautics

Date: January 1, 1917
Creator: Blair, William R
Description: A handbook in which properties and general phenomena of the atmosphere which aeronauts and aviators should understand are discussed.
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Metering Characteristics of Carburetors

Metering Characteristics of Carburetors

Date: January 1, 1919
Creator: Tice, Percival S & Dickinson, H C
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.
Contributing Partner: UNT Libraries Government Documents Department
Mufflers for aeronautic engines

Mufflers for aeronautic engines

Date: January 1, 1917
Creator: Diederichs, H. & Upton, G. B.
Description: Report presents the design, development and experimental results of muffling devices used to reduce noise generated by the airplane power plant.
Contributing Partner: UNT Libraries Government Documents Department
Nomenclature for aeronautics

Nomenclature for aeronautics

Date: January 1, 1917
Creator: unknown
Description: Report defines the principal terms which have come into use in the development of aeronautics. (author).
Contributing Partner: UNT Libraries Government Documents Department
Nomenclature for aeronautics

Nomenclature for aeronautics

Date: January 1, 1918
Creator: unknown
Description: Report defines the principal terms which have come into use in the development of aeronautics.
Contributing Partner: UNT Libraries Government Documents Department
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