摘要:
The invention provides methods and systems for controlling speed of an aircraft during an autonomous pushback manoeuvre, i.e. under the aircraft's own power without a pushback tractor. The method includes applying a torque to at least one landing gear wheel of the aircraft, the torque being in a direction opposite to the backwards rolling direction of rotation of the landing gear wheel. The torque applied does not exceed a limit for ensuring aircraft longitudinal stability. For longitudinal stability the torque applied should not cause the aircraft to risk a tip-over event.
摘要:
L'invention concerne un procédé de gestion du freinage d'un aéronef comportant une pluralité de roues R1, ..., R12 équipées chacune d'un frein F1, ..., F12 adapté à générer un effort de freinage en réponse à un enfoncement de pédales 5 de frein, le procédé de gestion comprenant les étapes de : - répartir les roues équipées d'un frein en au moins deux groupes distincts G1, G2, G3, G'1, G'2, G'3 ; - affecter à chaque groupe de roues des lois de freinage respectives de variation de l'effort de freinage en fonction de l'enfoncement des pédales de frein ; - permuter à intervalles prédéterminés l'affectation des lois aux groupes selon une loi de permutation prédéfinie. Selon l'invention, le procédé comporte en outre l'étape de modifier la loi de permutation en réponse à la survenue d'un évènement prédéterminé.
摘要:
The invention provides methods and systems for controlling speed of an aircraft during an autonomous pushback manoeuvre, i.e. under the aircraft's own power without a pushback tractor. The method includes applying a torque to at least one landing gear wheel of the aircraft, the torque being in a direction opposite to the backwards rolling direction of rotation of the landing gear wheel. The torque applied does not exceed a limit for ensuring aircraft longitudinal stability. For longitudinal stability the torque applied should not cause the aircraft to risk a tip-over event.
摘要:
The load on an aircraft component, such as the load on a landing gear leg during braking, is measured with a contactless, all-weather displacement measuring system. The system includes a control unit (6, 10, 11), a controllable microwave emitter (2) of electromagnetic radiation and a microwave detector (3) comprising a plurality of antennae (3a, 3b). When the aircraft component is subjected to a load relative movement of the emitter (2) and detector (3) is caused. The detector (3) generates in response to microwave radiation received from the focused beam (8) of radiation emitted by the emitter (2) a signal that is received by a signal processor (10, 11) of the control unit. The signal received by the control unit depends on the relative positions of the emitter (2) and detector (3). The control unit is arranged to provide an output signal representative of the load sustained by the aircraft component. The system may be used to control braking in dependence on the output signal so as to maximise braking efficiency without overloading the landing gear leg. 10 Ghr, 50 mm, 0.1 mm.
摘要:
The invention provides methods and systems for controlling speed of an aircraft during an autonomous pushback manoeuvre, i.e. under the aircraft's own power without a pushback tractor. The method includes applying a torque to at least one landing gear wheel of the aircraft, the torque being in a direction opposite to the backwards rolling direction of rotation of the landing gear wheel. The torque applied does not exceed a limit for ensuring aircraft longitudinal stability. For longitudinal stability the torque applied should not cause the aircraft to risk a tip-over event.
摘要:
The load on an aircraft component, such as the load on a landing gear leg during braking, is measured with a contactless, all-weather displacement measuring system. The system includes a processing unit, a plurality of controllable microwave emitters (1) of electromagnetic radiation including a pulsed time-coded signal (PTCS) and a microwave detector (3) comprising a plurality of antennae. When the aircraft component is subjected to a load relative movement of the emitter (1) and detector (3) is caused. The antennae of the detector (3) generate in response to microwave radiation received from PTCS emitted by the emitter (1) signals that are received by a signal processor (7) of the processing unit. The timing of the signals received by the processing unit depends on the relative positions of the emitter (1) and detector (3). With the use of triangulation techniques, the processing unit provides an output signal representative of the load sustained by the aircraft component. The system may be used to control braking in dependence on the output signal so as to maximise braking efficiency without overloading the landing gear leg.