Systems and methods for safely landing an aircraft

摘要

A system for safely landing an aircraft including a low range radio altimeter, a barometric altimeter, and an autothrottle control. The low range radio altimeter calculates a first height of the aircraft above ground-level, the barometric altimeter calculates a second height of the aircraft above ground-level, and the autothrottle control determines if the first height and the second height do not correlate. If the first and second heights are determined to lack correlation, then automatic thrust-control of the aircraft is stopped. In some embodiments, the second height is partially calculated by accessing a ground elevation database to obtain an elevation of the ground above sea level and determining a difference between the elevation of the ground above sea level and an elevation of the aircraft above sea level.

主权项

1. An aircraft landing system comprising:
a low range radio altimeter that calculates a first height of the aircraft above ground level, a barometric altimeter that calculates a second height of the aircraft above ground level, and an automatic autothrottle control that determines whether there is a correlation between the first height and the second height and that prevents automatic thrust control of the aircraft in an absence of the correlation between the first height and the second height.