Wind-tunnel study of the effects of propeller operation and flap deflection on the pitching moments and elevator hinge moments of a single-engine pursuit-type airplane / by H.R. Pass.
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| Main Author: | |
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| Corporate Authors: | , |
| Other title: | NACA Wartime Reports. Series L. |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
National Advisory Committee for Aeronautics,
[1942]
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| Series: | Wartime Reports (United States. National Advisory Committee for Aeronautics) ;
no. L411. |
| Subjects: |
| Abstract: | A mock-up of a pursuit airplane has been tested in the NACA full-scale wind tunnel and the effects of propeller operation and flap deflection on the aerodynamic characteristics of the wing-fuselage combination and of the horizontal tail have been determined. The results of these tests have been compared with the results of previous tests and with available theories and, in general, satisfactory comparisons have been obtained. These results have also been used to develop empirical procedures for determining the effect of propeller operation on the lift and on the pitching moments of a flapped wing and to evaluate empirical factors for calculating the downwash angles at the tail with the propeller operating. The general applicability of these empiricisms has not been determined. The elevator hinge-moment characteristics have also been determined from tests on the mock-up and indicate the inadequacy of available data on the hinge-moment parameters. The procedure for calculating stick forces from wind-tunnel data has been outlined. |
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| Item Description: | NACA Wartime Report L-411. Originally issued as NACA as an Advance Restricted Report (July 1942) Prepared at the Langley Memorial Aeronautical Laboratory, Langley Field, Virginia. |
| Physical Description: | 29 pages, 34 unnumbered pages : illustrations ; 27 cm. |
| Bibliography: | Includes bibliographical references. |