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US 6,556,897 B2Granted
Method and apparatus for limiting attitude drift during turns
AssigneeHoneywell International Inc.
InventorsKenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
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Abstract
An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information. During bank angles exceeding a predefined limit, the roll gyro is slaved to a roll angle estimator for improved system accuracy.
Claims5
An apparatus for outputting roll angle information comprising:
- an input for receiving a signal indicative of roll rate;
- a first device, coupled to said input, for obtaining an Euler roll angle from said signal;
- a first error correction device, coupled to said first device, for correcting errors in said Euler roll angle;
- a second error correction device, coupled to said first error correction device, for supplying a roll angle estimate to said first error correction device, during a period of time when said Euler roll angle exceeds a predefined limit;
- and
- an output for outputting a signal indicative of corrected roll angle information.
3 more elements
Dependencies are inferred from the claim text.