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F-8c adaptive flight control laws
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hendrick, R. C. Harvey, C. A. Hartmann, G. L. Stein, G. Carlson, D. N. |
| Copyright Year | 1977 |
| Description | Three candidate digital adaptive control laws were designed for NASA's F-8C digital flyby wire aircraft. Each design used the same control laws but adjusted the gains with a different adaptative algorithm. The three adaptive concepts were: high-gain limit cycle, Liapunov-stable model tracking, and maximum likelihood estimation. Sensors were restricted to conventional inertial instruments (rate gyros and accelerometers) without use of air-data measurements. Performance, growth potential, and computer requirements were used as criteria for selecting the most promising of these candidates for further refinement. The maximum likelihood concept was selected primarily because it offers the greatest potential for identifying several aircraft parameters and hence for improved control performance in future aircraft application. In terms of identification and gain adjustment accuracy, the MLE design is slightly superior to the other two, but this has no significant effects on the control performance achievable with the F-8C aircraft. The maximum likelihood design is recommended for flight test, and several refinements to that design are proposed. |
| File Size | 69613440 |
| Page Count | 331 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770026258 |
| Archival Resource Key | ark:/13960/t6353fm6k |
| Language | English |
| Publisher Date | 1977-09-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Liapunov Functions F-8 Aircraft Algorithms Fly By Wire Control Digital Techniques High Gain Control Theory Maximum Likelihood Estimates Flight Control Adaptive 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 | Technical Report |
