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US 11,748,183 B2Granted
Reasonableness monitor
AssigneeTextron Innovations Inc.
InventorMichael Logies
Life of this patent
Estimating the term…
Abstract
A flight control computer (FCC) has an index calculation component (ICC) configured to compare a reasonableness of at least a first value of a variable and a second value of the variable. A method of operating a flight control computer (FCC) includes providing an index calculation component (ICC) configured to compare a reasonableness of at least a first value of a variable and a second value of the variable.
Claims16
A flight control computer (FCC), comprising:
- an index calculation component (ICC) configured to compare a reasonableness of at least a first value of a variable provided by a first air data computer of the FCC and a second value of the variable provided by a second air data computer of the FCC;
- wherein the ICC is a programmed portion of the FCC configured to calculate a first index value for the first value and a second index value for the second value;
- wherein the first index value and the second index value are calculated as a function of assigning a Bit Number and a Bit Value to at least two of questions (1) whether the first and second index values are in-line valid, (2) whether the first and second index values are provided by whichever of the first air data computer and the second air data computer that has provided the most values that are in-line valid, (3) whether an operating mode of the respective air data computers is not degraded, (4) whether a global positioning system threshold check has passed for the respective systems supplying GPS data to the ICC, and (5) whether the first value and the second value are closest to a GPS comparison reference;
- and
- wherein the FCC is configured to control flight of an aircraft as a function of a determination of the ICC, wherein the determination of the ICC dictates which of the first value and the second value is relied upon to control flight of the aircraft.
2 more elements
A method of operating a flight control computer (FCC), comprising:
- providing an index calculation component (ICC) configured to compare a reasonableness of at least a first value of a variable provided by a first air data computer of the FCC and a second value of the variable provided by a second air data computer of the FCC;
- wherein the ICC is a programmed portion of the FCC configured to calculate a first index value for the first value and a second index value for the second value;
- and
- wherein the first index value and the second index value are calculated as a function of assigning a Bit Number and a Bit Value to at least two of questions (1) whether the first and second index values are in-line valid, (2) whether the first and second index values are provided by whichever of the first air data computer and the second air data computer that has provided the most values that are in-line valid, (3) whether an operating mode of the respective air data computers is not degraded, (4) whether a global positioning system threshold check has passed for the respective systems supplying GPS data to the ICC, and (5) whether the first value and the second value are closest to a GPS comparison reference;
- and
- wherein the FCC is configured to control flight of an aircraft as a function of a determination of the ICC, wherein the determination of the ICC dictates which of the first value and the second value is relied upon to control flight of the aircraft.
3 more elements
Dependencies are inferred from the claim text.