Aircraft High-Lift Aerodynamic Analysis Using a Surface-Vorticity Solver
| Autor: | Cindy W. Albertson, Erik D. Olson |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Airfoil
020301 aerospace & aeronautics Leading-edge slats Wing Lift-induced drag Computer science business.industry 02 engineering and technology Aerodynamics Vortex generator Solver 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics 0203 mechanical engineering Wing twist 0103 physical sciences Aerospace engineering business |
| Zdroj: | 54th AIAA Aerospace Sciences Meeting. |
| DOI: | 10.2514/6.2016-0779 |
| Popis: | This study extends an existing semi-empirical approach to high-lift analysis by examining its effectiveness for use with a three-dimensional aerodynamic analysis method. The aircraft high-lift geometry is modeled in Vehicle Sketch Pad (OpenVSP) using a newly-developed set of techniques for building a three-dimensional model of the high-lift geometry, and for controlling flap deflections using scripted parameter linking. Analysis of the low-speed aerodynamics is performed in FlightStream, a novel surface-vorticity solver that is expected to be substantially more robust and stable compared to pressure-based potential-flow solvers and less sensitive to surface perturbations. The calculated lift curve and drag polar are modified by an empirical lift-effectiveness factor that takes into account the effects of viscosity that are not captured in the potential-flow solution. Analysis results are validated against wind-tunnel data for The Energy-Efficient Transport AR12 low-speed wind-tunnel model, a 12-foot, full-span aircraft configuration with a supercritical wing, full-span slats, and part-span double-slotted flaps. |
| Databáze: | OpenAIRE |
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