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

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Periodic Stresses in Gyroscopic Bodies, With Applications to Air Screws

Description: Report discusses periodic stresses in gyroscopic bodies with applications to air screws caused by particle mass. Report concludes that all modern air screws obey the laws found for plane groups of particles. In particular the two-bladers exert on the shaft a rhythmic gyroscopic torque; the multibladers a steady one; both easily calculable for any given conditions of motion and mass distribution.
Date: 1918
Creator: Zahm, A. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relative Worth of Improvements of Fabrics

Description: Report presents an equation that connects all the major qualities of a fabric, from which the fabric may be rigidly designed with respect to maximum ultimate economy.
Date: August 17, 1915
Creator: Goodyear Tire And Rubber Company
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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Review of the Development of Engines Suitable for Aeronautic Service - Origin, Means Used, and Results

Description: Report presents requirements of internal combustion engines suitable for aircraft. Topics include: (1) service requirements for aeronautic engines - power versus weight, reliability, and adaptability factors, (2) general characteristics of present aero engines, (3) aero engine processes and functions of parts versus power-weight ratio, reliability, and adaptability factors, and (4) general arrangement, form, proportions, and materials of aero parts - power-weight ratio, reliability, and adaptab… more
Date: 1917
Creator: Lucke, Charles E.
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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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 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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