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  • 1
    Publication Date: 2019-05-10
    Description: No abstract available
    Keywords: ELECTRONICS
    Type: NACA-TR-98
    Format: application/pdf
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  • 2
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    In:  CASI
    Publication Date: 2019-06-28
    Type: NACA-TN-4
    Format: application/pdf
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  • 3
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    In:  CASI
    Publication Date: 2019-06-28
    Type: NACA-TN-3
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  • 4
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    In:  CASI
    Publication Date: 2019-06-28
    Description: Static tests fall into two groups, the first of which is designed to load all members of the structure approximately in accordance with the worst loads which they carry in flight, while the second is directed to the testing of specific members which are suspected of weakness and which are difficult to analyze mathematically. The nature of the loading in the second type is different for every different test, but the purpose of the first is defined clearly enough to permit the adoption of some standard set of loading specifications, at least for airplanes of normal design. Here, an attempt is made to carry through an analysis leading to such a standard, the goal being the determination of a load which will simultaneously impose on every member of the airplane structure a stress equal to the worst it will carry in flight.
    Type: NACA-TN-6
    Format: application/pdf
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  • 5
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    In:  CASI
    Publication Date: 2019-06-28
    Type: NACA-TN-1
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  • 6
    Publication Date: 2019-06-28
    Description: In seeking further information as to the nature of maneuvers and as to the maneuverability characteristics of airplanes, continuous measurements of the angles of attack and air speeds at several points along the wings have been made during spins and loops. Very striking results have been obtained with reference to the rolling velocity and the distribution of load in spins and the variation of the angle of attack in loops, a surprisingly large range of angle being experienced during slow loops. The flight tests and results are fully described in this report.
    Type: NACA-TR-105
    Format: application/pdf
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  • 7
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    In:  CASI
    Publication Date: 2019-06-28
    Description: Results are presented for a series of tests made by the Advisory Committee's staff at Langley Field during the summer of 1919 with the objectives of determining the characteristics of airplanes in flight and the extent to which the actual characteristics differ from those predicted from tests on models in the wind tunnel, and of studying the balance of the machines and the forces which must be applied to the controls in order to maintain longitudinal equilibrium.
    Type: NACA-TR-70
    Format: application/pdf
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  • 8
    Publication Date: 2019-06-28
    Description: Airplane wing trusses are generally designed to contain redundant members (stagger wires and external drag wires) which, according to common practice, are not taken into account in calculations, so as to simplify the stress analysis by rendering the structure statically determinate. A more accurate method, in which the redundancies are included, involves a solution by means of Castigliano's method of least work. For the purpose of demonstrating the practical application of the method of least work this report presents examples for stresses of several cases of loading worked out for a structure similar to that of the Curtiss JN-4h. Case 1 was taken as the condition of velocity of 100 miles per hour combined with the angle of attack of maximum lift. Case 1a assumed the same loading but neglected the distortion of wooden members in the least-work analysis. So little error was involved in case 1a that this simplified method was employed for each succeeding case. Case 2 assumed a diving speed of 120 miles per hour and an angle of attack of no lift. Case 3 was worked out for the conditions imposed by the sand load recommended in NACA technical note no. 6.
    Type: NACA-TR-92
    Format: application/pdf
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