Communications: electrical – Aircraft alarm or indicating systems – Nonalarm flight indicator
Patent
1996-01-16
1998-04-14
Swarthout, Brent A.
Communications: electrical
Aircraft alarm or indicating systems
Nonalarm flight indicator
364430, G01C 2100
Patent
active
057397708
ABSTRACT:
A method for providing off-path guidance during a descent comprises the steps of determining a current altitude (H) and a corresponding current horizontal distance (X) of the aircraft from a selected bottom of descent point (B/D). A simulation of a Basic Descent Path (BDP) is performed, and a plurality of corresponding altitude (H.sub.i) and horizontal distance (X.sub.i) points is stored in a BDP array. A horizontal distance (X.sub.B) is determined from the B/D point to a bottom point of the BDP array, and a horizontal distance (X.sub.A) is determined in the BDP array that corresponds to the current aircraft altitude. A radius of a BDP circle is obtained by subtracting X.sub.B from X.sub.A for display on a navigation display unit. An aircraft symbol is displayed on the Navigation Display unit at a distance proportional to X.sub.A, thereby indicating the distance remaining until to start of descent of the aircraft.
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patent: 5111400 (1992-05-01), Yoder
Honeywell Inc.
Sapelli Art
Swarthout Brent A.
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