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On problems associated with modeling wing-tail configurations from wind tunnel data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Klein, Vladislav Murphy, Patrick C. |
| Copyright Year | 2007 |
| Description | This paper considers factors that contribute to poor identification of unsteady aerodynamics from wind tunnel data for an airliner configuration. One approach to modeling a wing-tail configuration is considered and applied to both steady and large-amplitude forced pitch oscillation wind tunnel data taken over a wide range of angles of attack but a limited range of amplitude and frequencies. The identified models fit the measured data well but in some cases with inaccurate parameters. Only limited conclusions can be drawn from analysis of the current data set until further experiments can be performed to resolve the identification issues. The analysis of measured and simulated data provides some insights and guidance on how an effective experiment may be designed for wing-tail configurations with nonlinear unsteady aerodynamics. |
| File Size | 333442 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070030306 |
| Archival Resource Key | ark:/13960/t81k4cn36 |
| Language | English |
| Publisher Date | 2007-08-20 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Pitching Moments Degrees of Freedom Amplitudes Data Acquisition Algorithms Simulation Unsteady Aerodynamics Downwash Body-wing and Tail Configurations Wind Tunnel Tests Nonlinearity Mathematical Models Angle of Attack Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
