| Autor: |
David P. Lockard, John C. Lin, Ryan Ferris, Veer N. Vatsa, LaTunia G. Pack Melton |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
AIAA AVIATION 2021 FORUM. |
| DOI: |
10.2514/6.2021-2499 |
| Popis: |
Numerical simulations have been performed for a conventional high-lift version of the Common Research Model (CRM) model corresponding to landing and take- off configurations. Computed values of lift and drag for the landing configuration are compared with the experimental data acquired in the 14- by 22-Foot Subsonic Tunnel (14×22) at the NASA Langley Research Center (LaRC). Simulations replicated the experimentally observed improvements in the lift characteristics in the presence of a nacelle chine. Flow visualization images indicate that vortices generated by the nacelle chine reduce flow separation regions on the upper surface of the wing at higher angles of attack. Based on such observations, the take-off configuration considered is also equipped with a nacelle chine, and testing of this configuration is planned in the 14×22 tunnel in near future. Preliminary solutions are also presented to explore the feasibility of using a localized flap gap blowing (LFGB) active flow control concept for improving the aerodynamic performance at take-off conditions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
