原文传递
Investigation into Active Spanwise Camber Deformation on the Lateral Stability and Roll Control of the X-56A Compared to Conventional Ailerons.
| 题名： | Investigation into Active Spanwise Camber Deformation on the Lateral Stability and Roll Control of the X-56A Compared to Conventional Ailerons. |
| 作者： | Yerly, E. T. |
| 关键词： | Ailerons, Aeronautics, Control surfaces, Geometry, Horizontal stabilizers, Spreadsheet software, Turbulent flow, Wind tunnels, Air force, Pressure distribution, Remotely piloted vehicles, Spars, Computational fluid dynamics, Swept wings, Unmanned aerial vehicles, Airframes, Aerodynamic configurations, Fluid dynamics, Boundary layer, Aircrafts, Roll camber deformation x-56a aileron aircraft, (coefficient of lift), (coefficient of drag), Conformal wing |
| 摘要： | This research compares the stability and roll characteristics of an X-56A using AFRLs Variable Camber Complaint wing technology to actively change wing camber compared to conventional ailerons deflected at set angles. An analysis of the stability and roll characteristics was modeled using a 3-D vortex lattice theory simulation, and that data was compared to wind tunnel testing to verify and validate the model results. Wind tunnel data was collected using 19 inch 3-D printed scale models with wings fabricated with a pre-determined percentage of camber deformation, as well as models with fixed aileron deflections. Wind tunnel testing was performed at a Reynolds number range from 30,000 to 150,000. Testing indicated at high speeds and low angles of attack, the camber deformed wings produced a roll moment and roll rate equivalent to, or greater than conventional ailerons. Because of early onset stall, the camber deformed wing had a lower lift coefficient with increased drag. The camber deformed models did not result in aerodynamic moment instability; however, they did demonstrate a decrease in roll and pitch stability. The 3-D model predicted accurate trends in roll and stability, but could not model viscous effects due to the inviscid nature of the simulation. |
| 报告类型： | 科技报告 |
相关文献
- Virtual Deformation Control of the X-56A Model with Simulated Fiber Optic Sensors.
- X-56A Structural Dynamics Ground Testing Overview and Lessons Learned.
- Rollover of Heavy Commercial Vehicles UMTRI-99-19
- An Investigation into the Lateral Stability of the M1037 Truck Pulling the M101 Trailer
- An airfoil for general aviation applications
- Current and Future Research in Active Control of Lightweight, Flexible Structures Using the X-56 Aircraft.
检索历史
应用推荐
