초록

A method and device for displaying trim information on an airplane during a take-off, for determining and displaying a precise trim setpoint which enables the pilot, by following the displayed information, to carry out a manual take-off which is optimized from the performance point of view.

대표청구항 ▼

1. A method for displaying trim information on an airplane at least during take-off, the method comprising: at a device including one or more processors configured to execute one or more of the following steps:a) detecting whether the airplane is in a rotation phase of take-off using at least one of

1. A method for displaying trim information on an airplane at least during take-off, the method comprising: at a device including one or more processors configured to execute one or more of the following steps:a) detecting whether the airplane is in a rotation phase of take-off using at least one of a current speed of the airplane, a current altitude of the airplane, a predetermined rotation speed, and a predetermined height; andb) computing, during the rotation phase of take-off, a first pitch rate order ODV1 according to the following expression: ODV1=min[K1*(Qobj−Qcom),K2*(θobj−θc)+K3*Qc] in which: min corresponds to the minimum value;Qobj represents a predetermined pitch rate;Qcom represents a pitch rate controlled by a pilot via a control column of the airplane;θobj represents a predetermined trim;θc represents a current trim;Qc represents a current pitch rate; andK1, K2 and K3 represent predetermined gains, andc) displaying, in real time on a display screen, a first symbol indicating a current pitch value of the airplane and a second symbol indicating an airplane pitch setpoint value, in accordance with the first pitch rate order ODV1 transmitted and received at the display screen. 2. The method according to claim 1, wherein the rotation phase is defined between the following two moments: a first moment when the airplane which is taxiing on the ground reaches the predetermined rotation speed; anda second moment when the airplane reaches the predetermined height in relation to the ground. 3. The method according to claim 1, further comprising computing a second pitch rate order ODV2 before the airplane is in the rotation phase of take-off according to the following expression: ODV2=−(K4*θc)+(K5*Qc)in which K4 and K5 represent predetermined gains; andtransmitting the second pitch rate order ODV2 to the display screen. 4. The method according to claim 1 further comprising computing a nominal pitch rate order ODV3 after the airplane is in the rotation phase of take-off which corresponds to an order of a nominal SRS-type law; and transmitting the nominal pitch rate order ODV3 to the display screen. 5. The method according to claim 1, further comprising determining the predetermined gains in a preliminary step, empirically using simulations. 6. A device for displaying trim information on an airplane at least during take-off, the device comprising: a processor configured to generate a pitch rate order;a monitoring and surveillance unit configured to detect at least one phase of take-off; anda display screen configured to display, in real time, a first symbol indicating the current pitch value of the airplane and a second symbol indicating an airplane pitch setpoint value, in accordance with the generated pitch rate order;wherein the processor is configured to compute a first pitch rate order ODV1 during a rotation phase of take-off, which is transmitted to the display screen during the rotation phase of take-off, and wherein the first pitch rate order ODV1 is computed according to the following expression: ODV1=min[K1*(Qobj−Qcom),K2*(θobj−θc)+K3*Qc] in which: min corresponds to the minimum value;Qobj represents a predetermined pitch rate;Qcom represents a pitch rate controlled by a pilot via a control column of the airplane;θobj represents a predetermined trim;θc represents a current trim;Qc represents a current pitch rate; andK1, K2 and K3 represent predetermined gains. 7. The device according to claim 6, wherein the processor is configured to compute a second pitch rate order ODV2 before the airplane is in the rotation phase of take-off according to the following expression: ODV2=−(K4*θc)+(K5*Qc) in which K4 and K5 represent predetermined gains. 8. The device according to claim 6, wherein wherein the processor is configured to compute a nominal pitch rate order ODV3 which corresponds to an order of a nominal SRS-type law after the airplane is in the rotation phase of take-off phase. 9. The device according to claim 6, further comprising a data link configured to supply data from one or more sources of information to the processor. 10. An airplane, comprising a device for displaying trim information according to claim 6.