Roll attitude inhibit of aircraft automatic outer loop

US4387431A · kind A · utility

Assignee

• UNITED TECHNOLOGIES CORPORATION · US

Inventors

• Stuart C. Wright · Woodbridge, US
• Don L. Adams · Bartlesville, US
• William C. Fischer · Monroe, US
• David J. Verzella · Guilford, US

Key dates

• Filing date: Mar 30, 1981
• Grant date: Jun 7, 1983
• Expiry date: Mar 30, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D1/0061
• WIPO field: Control
• WIPO sector: Instruments

Abstract

In an aircraft automatic flight control system (FIG. 4) the application of force to a control member (35R, FIG. 5) forces (222, 216, 217, 212, 213) the flight path controlling, full authority outer loop to be disengaged. Once disengaged by force, the outer loop remains disengaged (224) until force is removed (225) and a signal indicates (226) a need to reestablish the outer loop. Reestablishment may be indicated by beeping (228) or by the controlled attitude (54R, 55R) being restored to within a predetermined level (230).