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  Partner: UNT Libraries Government Documents Department
 Decade: 1910-1919
 Collection: National Advisory Committee for Aeronautics Collection
Preliminary report on the problem of the atmosphere in relation to aeronautics

Preliminary report on the problem of the atmosphere in relation to aeronautics

Date: January 1, 1917
Creator: Marvin, Charles F
Description: A report to the Weather Bureau, Washington DC, from the chairman of the Subcommittee on the Atmosphere in Relation to Aeronautics describing the activities accomplished and the proposal of work to be undertaken by the subcommittee.
Contributing Partner: UNT Libraries Government Documents Department
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.
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 ...
Contributing Partner: UNT Libraries Government Documents Department
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
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.
Contributing Partner: UNT Libraries Government Documents Department
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.
Contributing Partner: UNT Libraries Government Documents Department
Annual Report of the National Advisory Committee for Aeronautics (1st). [Administrative Report Including Technical Reports Nos. 1 to 7]

Annual Report of the National Advisory Committee for Aeronautics (1st). [Administrative Report Including Technical Reports Nos. 1 to 7]

Date: January 1, 1916
Creator: unknown
Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, problems, recommendations, and a compilation of technical reports produced.
Contributing Partner: UNT Libraries Government Documents Department
Report on behavior of aeroplanes in gusts

Report on behavior of aeroplanes in gusts

Date: January 1, 1917
Creator: Hunsaker, J C & Wilson, Edward Bidwell
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. The damping of the pitching oscillation was also determined experimentally. Part 2 presents a theoretical method for determining the effects of gusts on aeroplanes in the following cases: (1) head-on gusts rising from 0 to j feet per second with various degrees of sharpness, (2) up gusts of the same type, (3) rotary gusts of the same type, (4) rear gusts and down gusts are included by merely changing the sign of j.
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 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
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