| タイトル | Transonic calculation of airfoil stability and response with active controls |
| 著者（英） | Batina, J. T.; Yang, T. Y. |
| 著者所属（英） | NASA Langley Research Center|Purdue Univ. |
| 発行日 | 1984-01-01 |
| 言語 | eng |
| 内容記述 | Transonic aeroelastic stability and response analyses are performed for the MBB A-3 supercritical airfoil. Three degrees of freedom are considered: plunge, pitch, and aileron pitch. The objective of this study is to gain insight into the control of airfoil stability and response in transonic flow. Stability analyses are performed using a Padeaeroelastic model based on the use of the LTRAN2-NLR transonic small-disturbance finite-difference computer code. Response analyses are performed by coupling the structural equations of motion to the unsteady aerodynamic forces of LTRAN2-NLR. The focus of the present effort is on transonic time-marching transient response solutions using modal identification to determine stability. Frequency and damping of these modes are directly compared in the complex s-plane with Pademodel eigenvalues. Transonic stability and response characteristics of two-dimensional airfoils are discussed and comparisons are made. Application of the Padeaeroelastic model and time-marching analyses to flutter suppression using active controls is demonstrated. |
| NASA分類 | AIRCRAFT STABILITY AND CONTROL |
| レポートNO | 84A31748
AIAA PAPER 84-0873 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/398367 |
