Method and apparatus for an improved autopilot system providing for late runway change

Method and apparatus for an improved autopilot system providing for late runway change

An improvement to an autopilot flight director system allows the flight crew to make a late runway change without disengaging the autopilot. The improved system allows a transition to a new runway assignment if radio altitude is greater than 1500 feet. Control logic determines whether or not localiz...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RONALD J BLOOM, FRANK P. SANTONI JR, TIMOTHY C MCROBERTS, ROBERT M AGATE, JOHN C. GRIFFIN III, CHARLES A HOVLAND, JOSEPH M MACDONALD, JOHN E CASHMAN, ROBERT E CHANEY, RONALD LILISCHKIES
Format: Patent
Sprache:eng
Schlagworte:
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Beschreibung
Zusammenfassung:An improvement to an autopilot flight director system allows the flight crew to make a late runway change without disengaging the autopilot. The improved system allows a transition to a new runway assignment if radio altitude is greater than 1500 feet. Control logic determines whether or not localizer and/or glideslope have been captured and enters predetermined modes as a function thereof to effect a transition to the new approach while enabling instrument landing system retuning while maintaining autopilot engagement. Flight crew workload during approach is significantly reduced as a result of implementation of the improved system.