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NASA-MEMO-12-2-58 REV A
Estimation of Directional Stability Derivatives at Small Angles and Subsonic and Supersonic Speeds
Year: 1958
Abstract: Methods are presented for estimating the directional stability derivative increments contributed by the stabilizing surfaces of subsonic and supersonic aircraft. These methods are strictly applicable at zero angle of attack and small angles of sideslip. The procedure of totaling the incremental coefficients to obtain an estimation of the total empennage side-force and yawing-moment coefficient derivatives is also shown, together with numerical examples. A correlation is presented between estimated and experimental incremental coefficients which indicates that the methods of this report generally estimate the increment of side force gained by the addition of a panel to within +20 percent. This is true for both subsonic and supersonic Mach numbers.
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NASA-MEMO-12-2-58 REV A
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:55:05Z | |
| date available | 2017-09-04T16:55:05Z | |
| date copyright | 01/01/1958 | |
| date issued | 1958 | |
| identifier other | XANKAEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/118604 | |
| description abstract | Methods are presented for estimating the directional stability derivative increments contributed by the stabilizing surfaces of subsonic and supersonic aircraft. These methods are strictly applicable at zero angle of attack and small angles of sideslip. The procedure of totaling the incremental coefficients to obtain an estimation of the total empennage side-force and yawing-moment coefficient derivatives is also shown, together with numerical examples. A correlation is presented between estimated and experimental incremental coefficients which indicates that the methods of this report generally estimate the increment of side force gained by the addition of a panel to within +20 percent. This is true for both subsonic and supersonic Mach numbers. | |
| language | English | |
| title | NASA-MEMO-12-2-58 REV A | num |
| title | Estimation of Directional Stability Derivatives at Small Angles and Subsonic and Supersonic Speeds | en |
| type | standard | |
| page | 95 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1958 | |
| contenttype | fulltext |