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Flight test of a propulsion-based emergency control system on the md-11 airplane with emphasis on the lateral axis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Burcham Jr., Frank W. Burken, John J. Maine, Trindel A. Feather, John Goldthorpe, Steven Kahler, Jeffrey A. |
| Copyright Year | 1996 |
| Description | A large, civilian, multi-engine transport MD-11 airplane control system was recently modified to perform as an emergency backup controller using engine thrust only. The emergency backup system, referred to as the propulsion-controlled aircraft (PCA) system, would be used if a major primary flight control system fails. To allow for longitudinal and lateral-directional control, the PCA system requires at least two engines and is implemented through software modifications. A flight-test program was conducted to evaluate the PCA system high-altitude flying characteristics and to demonstrate its capacity to perform safe landings. The cruise flight conditions, several low approaches and one landing without any aerodynamic flight control surface movement, were demonstrated. This paper presents results that show satisfactory performance of the PCA system in the longitudinal axis. Test results indicate that the lateral-directional axis of the system performed well at high attitude but was sluggish and prone to thermal upsets during landing approaches. Flight-test experiences and test techniques are also discussed with emphasis on the lateral-directional axis because of the difficulties encountered in flight test. |
| File Size | 747592 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970001151 |
| Archival Resource Key | ark:/13960/t09w5cn7w |
| Language | English |
| Publisher Date | 1996-07-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Controllers Flight Tests Md 11 Aircraft Longitudinal Control Aircraft Landing Backups Emergencies Control Stability Directional Control Flight Control Lateral Control Aircraft Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
