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Aeroservoelastic simulation of an active flexible wing wind tunnel model
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Heeg, Jennifer Wood, David V. Buttrill, Carey S. Houck, Jacob A. Bacon, Barton J. |
| Organization | The National Aeronautics and Space Administration (NASA) |
| Copyright Year | 1996 |
| Abstract | Mathematical models and implementation issues are described for simulations developed in the active flexible wing wind tunnel test program, which resulted in successful application of active flutter control. The wind tunnel test program required a truth batch simulation for off-line tests of proposed control designs and functional, hotbench tests of digital controller hardware and software. To provide the hot-bench test environment, a real-time simulation of the wind tunnel model and test environment was desired. Although mathematical model complexity and computing power limitations prevented attainment of real-time operation, essential test goals were met with a hotbench simulation running at a timescale ratio no slower than 1:5. To achieve the required timescale, model reduction methods were applied to the aeroservoelastic portion of the full-order mathematical model. The reduction method was based on the internally balanced realization of a linear dynamic system. The error-bound properties of the internally balanced realization contributed to the method utility in the model reduction process. The state dimensions of the aeroservoelastic model were reduced by a factor of 2. The errors due to reduction appeared beyond the 10th bit of the analog-to-digital converters for all 560 combinations of simulation inputs and outputs. |
| File Size | 376916 |
| File Format | |
| Alternate Webpage(s) | http://www.archive.org/details/nasa_techdoc_20040110875 |
| Archival Resource Key | ark:/13960/t0ks7kh7s |
| Language | English |
| Publisher Date | 1996-04-01 |
| Publisher Institution | Langley Research Center |
| Access Restriction | Open |
| Subject Keyword | Human Factors Engineering Flight Crews Pilot Error Cockpits Aircraft Instruments Aircraft Design Aircraft Pilots Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
