A Wind Tunnel Evaluation Of Analytical Techniques For Predicting Static Stability And Control Characteristics Of Flexible Aircraft PDF Download
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Author | : Irving Abel |
Publisher | : |
Total Pages | : 76 |
Release | : 1972 |
Genre | : Airplanes |
ISBN | : |
Download A Wind-tunnel Evaluation of Analytical Techniques for Predicting Static Stability and Control Characteristics of Flexible Aircraft Book in PDF, ePub and Kindle
An experimental evaluation of analytical techniques for predicting certain stability and control characteristics of a large flexible aircraft is presented. Analytical methods based on both the model approach and flexibility influence coefficients are developed to predict the aerodynamic characteristics of a flexible airplane. These methods are then applied to a flexibly scaled model of a supersonic transport configuration. Comparisons of wind-tunnel data, calculations based on the model approach, and flexibility influence coefficients are presented over the Mach number range from 0.6 to 2.7. An examination of the results obtained from this study indicates that both analytical techniques predict reasonably well the effect of flexibility on the basic longitudinal characteristics and that both techniques give generally comparable results.
Author | : |
Publisher | : |
Total Pages | : 542 |
Release | : 1974 |
Genre | : |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 542 |
Release | : 1972 |
Genre | : Mechanics, Applied |
ISBN | : |
Download Applied Mechanics Reviews Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1932 |
Release | : 1972 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
Author | : Maynard C. Sandford |
Publisher | : |
Total Pages | : 76 |
Release | : 1975 |
Genre | : Airplanes |
ISBN | : |
Download Development and Demonstration of a Flutter-suppression System Using Active Controls Book in PDF, ePub and Kindle
The application of active control technology to suppress flutter has been demonstrated successfully in the Langley transonic dynamics tunnel with a delta-wing model. The model was a simplified version of a proposed supersonic transport wing design. An active flutter-suppression method based on an aerodynamic energy criterion has been verified by using three different control laws. The first two control laws utilized both leading-edge and trailing-edge active control surfaces, whereas the third control law required only a single trailing-edge active control surface. At a Mach number of 0.9 the experimental results demonstrated increases in the flutter dynamic pressure from 12.5 percent to 30 percent with active controls. Analytical methods were developed to predict both open-loop and closed-loop stability, and the results agreed reasonably well with the experimental results.
Author | : United States. Superintendent of Documents |
Publisher | : |
Total Pages | : 1408 |
Release | : 1976 |
Genre | : United States |
ISBN | : |
Download Monthly Catalog of United States Government Publications, Cumulative Index Book in PDF, ePub and Kindle
Author | : United States. Congress. House. Committee on Science and Astronautics |
Publisher | : |
Total Pages | : 1222 |
Release | : 1971 |
Genre | : Astronautics |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 868 |
Release | : 1975 |
Genre | : Aerodynamics |
ISBN | : |
Download NASA Technical Report Book in PDF, ePub and Kindle
Author | : United States. Congress. House. Committee on Science and Astronautics |
Publisher | : |
Total Pages | : 342 |
Release | : 1971 |
Genre | : |
ISBN | : |
Download 1972 NASA Authorization Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1124 |
Release | : 1987 |
Genre | : Aeronautics |
ISBN | : |
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