Ground strike protection function for aircraft autopilot
US5901927A · kind A · utility
30Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0676
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for use with an aircraft autopilot to prevent an aircraft part from striking the ground during near ground maneuvers by employing a protection circuit between the outer loop and the inner loop of the control chain between the autopilot and the control surface, the prevention circuit producing an output signal when there is a possibility of ground strike which output signal operates to reduce the control surface command signal from the inner loop to the control surface and thus be rapidly responsive to aircraft attitude changes that could produce ground strike.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.