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Parameter identification for x-31a at high angles of attack
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rohlf, D. Plaetschke, Ermin Weiss, S. |
| Copyright Year | 1994 |
| Description | The U.S./German experimental aircraft X-31A was designed and constructed to demonstrate enhanced fighter maneuverability. Post-stall maneuvering is enabled by applying new technologies such as high angle of attack aerodynamics and flight control system integrated thrust vectoring. Two demonstrator aircraft have been built by the main contractors, Rockwell International and Deutsche Aerospace (formerly MBB). Flight testing started in October 1990 and before the end of 1992 both aircraft had accomplished a significant number of flights covering the entire AoA regime from about -5 to 70 deg. Throughout the envelope expansion, DLR Institute of Flight Mechanics conducted parameter identification (PID) to determine the aerodynamic parameters of the aircraft from flight test data and to compare the results to the predictions from the aerodynamic dataset (ADS). The application of system identification to high AoA / post-stall flight data raises some major problems, which are discussed in this paper. Results from both longitudinal and lateral-directional motion will be presented. |
| File Size | 482339 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950007821 |
| Archival Resource Key | ark:/13960/t04z06z92 |
| Language | English |
| Publisher Date | 1994-07-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Flight Tests Flight Characteristics X-31 Aircraft Strakes Maneuverability Thrust Vector Control Aircraft Maneuvers System Identification Angle of Attack Parameter Identification Fighter Aircraft Aircraft Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
