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Peak-seeking optimization of spanwise lift distribution for wings in formation flight (Document No: 20120016853)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hanson, Curtis E. Ryan, Jack |
| Copyright Year | 2012 |
| Description | A method is presented for the optimization of the lift distribution across the wing of an aircraft in formation flight. The usual elliptical distribution is no longer optimal for the trailing wing in the formation due to the asymmetric nature of the encountered flow field. Control surfaces along the trailing edge of the wing can be configured to obtain a non-elliptical profile that is more optimal in terms of minimum drag. Due to the difficult-to-predict nature of formation flight aerodynamics, a Newton-Raphson peak-seeking controller is used to identify in real time the best aileron and flap deployment scheme for minimum total drag. Simulation results show that the peak-seeking controller correctly identifies an optimal trim configuration that provides additional drag savings above those achieved with conventional anti-symmetric aileron trim. |
| File Size | 452538 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120016853 |
| Archival Resource Key | ark:/13960/t6353nc5f |
| Language | English |
| Publisher Date | 2012-08-14 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Aerodynamic Balance Control Systems Design Aerodynamics Ailerons Formation Flying Lift Real Time Operation Algorithms Drag Reduction Upwash Trailing Edges Downwash Flaps Control Surfaces Automatic Control Wing Span Newton-raphson Method Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
