Fuel efficient airspeed trim

Details Fuel efficient airspeed trim Fuel efficient airspeed trim

2006-04-18

2006-04-18

Black, Thomas G. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

C701S011000, C244S181000

Reexamination Certificate

active

07031811

ABSTRACT:
A system and method are provided for precisely adjusting individual aircraft airspeed system in order to provide more accurate cruise Indicated Airspeed (IAS). The system includes a flight data computer, an autopilot, and airspeed displays. The flight data computer includes a first component that records in-service data to determine actual fuel mileage for the aircraft for comparison to a production rating fuel mileage. The flight data computer also includes a user interface that allows a user to set a Mach trim value based on the comparison and a third component that adjusts indicated airspeed based on the determined Mach trim value. The autopilot and airspeed displays receive the adjusted indicated airspeed.

REFERENCES:
patent: 3533579 (1970-10-01), Moller
patent: 3621941 (1971-11-01), Blout
patent: 3949958 (1976-04-01), Richter
patent: 4346288 (1982-08-01), Foster
patent: 4382283 (1983-05-01), Clelford et al.
patent: 4641268 (1987-02-01), Zweifel et al.
patent: 4764872 (1988-08-01), Miller
patent: 5407153 (1995-04-01), Kirk et al.

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