The problem of longitudinal stability and control at high speeds / by Manley J. Hood and H. Julian Allen.
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| Corporate Authors: | , |
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| Other title: | NACA Wartime Reports. Series W. |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
National Advisory Committee for Aeronautics,
[1943]
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| Series: | Wartime Reports (United States. National Advisory Committee for Aeronautics) ;
no. W3. |
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| Abstract: | The difficulty in pulling out of high-speed dives, experienced with some airplanes, is show to be due, to the wing, to the effect of compressibility on the lift of the wing. As the Mach number is increased above the critical for the wing, there is a marked decrease in the lift-curve slope in the downwash at the tail plane, and also a shift in the angle of attack for zero lift. These changes bring about an increase in the static longitudinal stability and alter the trim. Frequently the change in trim is such as to promote a diving tendency which, because of the increased stability, cannot be overcome by use of the normal elevator control. |
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| Item Description: | NACA Wartime Report W-3. Originally issued as NACA as Confidential Bulletin W3K18 (November 1943) Prepared at the Ames Aeronautical Laboratory, Moffett Field, California. |
| Physical Description: | 11 pages, 3 unnumbered pages : illustrations ; 27 cm. |
| Bibliography: | Includes bibliographical references. |