Flight control using multiple actuators on primary control surfaces with tabs

US8876063B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• James J. Sheahan, Jr. · Hodgkins, US
• Charles E. Morris · Des Peres, US
• Jeffrey M. Roach · Saint Charles, US

Key dates

• Filing date: Dec 10, 2007
• Grant date: Nov 4, 2014
• Expiry date: Sep 20, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C9/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A flight control system for an aircraft directs a primary surface that is pivotable with respect to the aircraft with a moveable tab located at the end of the primary surface. A primary surface actuator maintains a position of the primary surface. A tab actuator moves the tab with respect to the primary flight control surface. A controller configured to coordinate the movement of the primary flight control surface with the movement of the tab by deflecting the tab with respect to the primary flight control surface, thereby allowing aerodynamic forces acting upon the deflected tab to position the primary flight control surface at a desired position. The primary flight control surface can then be maintained at the desired position by the primary surface actuator.