| 主权项 |
1. A method for facilitating performing an altitude change maneuver within reduced spacings of an airplane (AC) flying at a current altitude level (Nc), according to a given course, for capturing a target altitude level (Na), said airplane (AC) being provided with receiving means (2) for information relating to aircrafts flying in an air environment in the vicinity of said airplane (AC), comprising:
defining, via a processor, a target altitude level to be captured (Na), based on a received target altitude level selection; determining, via a processor, a control volume (V) around said airplane (AC), a first dimension (h) of which is a function of the altitude difference between said current level (Nc) and said target level (Na), a second dimension (L) of which depends on a first distance threshold (s1) and a third dimension (I) of which depends on a second distance threshold (s2), wherein the first distance threshold is a predefined horizontal separation between the airplane and at least one other aircraft flying in the air environment, wherein the second distance threshold is a predefined side separation between the airplane and at least one other aircraft flying in the air environment, and wherein the second distance threshold is measured in a direction perpendicular to the first distance threshold; locating, via a processor, the presence of at least one aircraft (ACd1, ACd2, ACref) inside said control volume (V); checking, via a processor, whether the following activation conditions are met:
the distance separating said airplane (AC) from said located aircraft is strictly lower than said first distance threshold (s1) and is at least equal to a third distance threshold (dITP),wherein the third distance threshold is a predetermined minimum separation distance between the airplane and at least one other aircraft flying in the air environment; andthe angle formed between the course of said airplane (AC) and the course of said located aircraft is at the most equal to a predefined angle threshold; and when said located aircraft (ACref) meets said activation conditions, from information from said located aircraft (ACref) received by said reception means (2), determining, via a processor, a performing time range, during which said altitude change maneuver is able to be performed, wherein a performing authorization request is generated automatically, via a processor, but held until a pilots' order is received to transmit the request to air traffic control (5).
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