Method and device for optimizing the flight of an aircraft
First Claim
1. Method for optimizing the flight of an aircraft comprising a flight management system, the said flight management system using a first cost index (CI1) and calculating a first speed (V1) on the basis of the first cost index (Cl1), the said flight management system calculating, furthermore, a first prediction of remaining flight time (T1) and a first prediction of fuel consumption (EFOB1) on the basis of the first speed (V1), the said method wherein it comprises, furthermore, the following steps:
- the selection of a second cost index (CI2),the calculation by the flight management system of a second speed (V2) on the basis of the second cost index (CI2), and the calculation of a second prediction of remaining flight time (T2) and of a second prediction of consumption (EFOB2) on the basis of the second speed (V2),the calculation of a discrepancy (Δ
V) between the first and the second speed, of a discrepancy (Δ
T) between the first prediction of remaining flight time and the second prediction of remaining flight time and of a discrepancy (Δ
EFOB) between the first and the second prediction of consumption,the displaying of the discrepancies (Δ
V,Δ
T,Δ
EFOB) calculated in the previous step.
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Abstract
The invention relates to a method for optimizing the flight of an aircraft comprising a flight management system, the said flight management system using a first cost index (CI1) and calculating a first speed setpoint (V1) on the basis of the first cost index (CI1), the said flight management system calculating (11), furthermore, a first prediction of remaining flight time (T1) and a first prediction of fuel consumption (EFOB1) on the basis of the first speed, the said method being characterized in that it comprises, furthermore, the following steps:
- the selection of a second cost index (CI2),
- the calculation (12) by the flight management system of a second speed setpoint (V2) on the basis of the second cost index (CI2), of a second prediction of remaining flight time (T2) and of a second prediction of consumption (EFOB2) on the basis of the second speed (V2),
- the calculation (13) of a discrepancy (ΔV) between the first and the second speed, of a discrepancy (ΔT) between the first prediction of remaining flight time and the second prediction of remaining flight time and of a discrepancy (ΔEFOB) between the first and the second prediction of consumption,
- the displaying (14) of the discrepancies (ΔV,ΔT,ΔEFOB) calculated in the previous step.
The invention allows vice versa the calculation and the consideration of a CI on the basis of the speed entered.
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Citations
12 Claims
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1. Method for optimizing the flight of an aircraft comprising a flight management system, the said flight management system using a first cost index (CI1) and calculating a first speed (V1) on the basis of the first cost index (Cl1), the said flight management system calculating, furthermore, a first prediction of remaining flight time (T1) and a first prediction of fuel consumption (EFOB1) on the basis of the first speed (V1), the said method wherein it comprises, furthermore, the following steps:
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the selection of a second cost index (CI2), the calculation by the flight management system of a second speed (V2) on the basis of the second cost index (CI2), and the calculation of a second prediction of remaining flight time (T2) and of a second prediction of consumption (EFOB2) on the basis of the second speed (V2), the calculation of a discrepancy (Δ
V) between the first and the second speed, of a discrepancy (Δ
T) between the first prediction of remaining flight time and the second prediction of remaining flight time and of a discrepancy (Δ
EFOB) between the first and the second prediction of consumption,the displaying of the discrepancies (Δ
V,Δ
T,Δ
EFOB) calculated in the previous step. - View Dependent Claims (2, 3, 4, 5)
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6. Device for optimizing the flight of an aircraft comprising a flight management system, the said flight management system using a first cost index (CI1) and calculating a first speed setpoint (V1) on the basis of the first cost index (CI1), the said flight management system calculating, furthermore, a first prediction of remaining flight time and a first prediction of consumption on the basis of the first speed, wherein it furthermore comprises:
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means for selecting a second cost index (CI2), means for the calculation of a second speed setpoint (V2) on the basis of the second cost index (CI2), of a second prediction of remaining flight time and of a second prediction of consumption on the basis of the second speed (V2), means for the calculation of a discrepancy between a first and the second speed, of a discrepancy between the first prediction of remaining flight time and the second prediction of remaining flight time and of a discrepancy between the first and the second prediction of consumption, means for displaying the calculated discrepancies. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification