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Book Title: NASA Technical Reports Server (NTRS) : Effect
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Language: english
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Post Date: 2025-04-15 13:42:46
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PDF Size: 4.31 MB
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Book Pages: 71
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NASA Technical Reports Server (NTRS) : Effect
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Description of the Book:
Lateral-stability flight tests were made over the Mach number range from 0.7 to 1.3 of models of three airplane configurations having 45deg sweptback wings. One model had a high wing; one, a low wing; and one, a high wing with cathedral. The models were otherwise identical. The lateral oscillations of the models resulting from intermittent yawing disturbances were interpreted in terms of full-scale airplane flying qualities and were further analyzed by the time-vector method to obtain values of the lateral stability derivatives. The effects of changes i n wing height on the static sideslip derivatives were fairly constant in the speed range investigated and agreed well with estimated values based on subsonic wind-tunnel tests. Effects of geometric dihedral on the rolling moment due to sideslip agreed well with theoretical and other experimental results and with a theoretical relation involving the damping in roll. The damping in roll, when compared with theoretical and other experimental results, shared good agreement at supersonic speeds but was somewhat higher at a Mach number of 1.0 and at subsonic speeds.
The damping in yaw shared no large changes in the transonic region
- Creator/s: NASA Technical Reports Server (NTRS
- Date: 9/14/1956
- Year: 1956
- Book Topics/Themes: NASA Technical Reports Server (NTRS
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