Apparatus and method for reducing aircraft loads resulting from atmospheric turbulence and gusts
US5375794A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | May 18, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0816
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A controller for reducing unwanted sideways motion of an aircraft by reducing lateral side loads, resulting from air mass, turbulence and gusts. The controller functions in a manner that in the presence of higher frequency side loads, the rudder is caused to move in a relieving direction so that the net force across the vertical stabilizer is reduced. A pressure differential across opposite sides of the vertical stabilizer is measured and used to generate a first rudder deflection signal. To maintain stability of the aircraft, a beta-dot signal from the yaw damper module is gain adjusted and filtered to generate a second rudder deflection signal which is added to the first rudder deflection signal. The resulting combined signal reduces lateral side loads at higher frequencies without comprising aircraft directional stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.