Method of assisting piloting at low altitude
First Claim
1. A method of assisting the piloting of an aircraft at low altitude over terrain, in which method via a machine, during a first stage, a framework is constructed from at least one main segment of given corridor width that extends in a horizontal projection over a model of said terrain between successive first and second waypoints determined by an operator, and then during a second stage, a setpoint flight path is constructed with the help of said framework, wherein during the first stage, said main segment is automatically subdivided into a plurality of secondary segments of given corridor width so that the framework follows said terrain as closely as possible, said secondary segments going from a first secondary segment starting from said first waypoint to a last secondary segment terminating at the second waypoint, each secondary segment being arranged at a setpoint height above the highest point of the terrain that it overlies, said setpoint height is identical for all of the secondary segments of a main segment, with any two adjacent secondary segments that are not in alignment being connected together by a vertical bar in a vertical section of said terrain and containing said main segment, wherein for a setpoint secondary length to be reached by the secondary segments that has been determined, and for Euclidean division of a main length of the main segment by the setpoint secondary length giving a quotient and a remainder:
- if said remainder is zero, then during the first stage, the main segment is subdivided into a number of secondary segments all having a real secondary length equal to said setpoint secondary length, the number of secondary segments being equal to the quotient; and
if said remainder is not equal to zero, then during the first stage, the main segment is subdivided firstly into a number of secondary segments all having the setpoint secondary length, that number being equal to said quotient minus one, and secondly into a lengthened secondary segment having a lengthened secondary length equal to the sum of the setpoint secondary length plus the remainder, said lengthened secondary segment being the first secondary segment of the main segment.
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Accused Products
Abstract
A method of assisting the piloting of an aircraft (60) at low altitude over terrain (S), in which method, during a first stage, a framework (10) is constructed from at least one main segment (40) and during a second stage a setpoint flight path (50) is constructed. More precisely, during the first stage, said main segment (40) is subdivided automatically into a plurality of secondary segments (41, 42, 43), each of said secondary segments (41) being situated at the same setpoint height above the highest point of the underlying terrain, with two adjacent secondary segments (41) being in alignment or connected together by a bar (44) that extends vertically in a vertical section.
15 Citations
14 Claims
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1. A method of assisting the piloting of an aircraft at low altitude over terrain, in which method via a machine, during a first stage, a framework is constructed from at least one main segment of given corridor width that extends in a horizontal projection over a model of said terrain between successive first and second waypoints determined by an operator, and then during a second stage, a setpoint flight path is constructed with the help of said framework, wherein during the first stage, said main segment is automatically subdivided into a plurality of secondary segments of given corridor width so that the framework follows said terrain as closely as possible, said secondary segments going from a first secondary segment starting from said first waypoint to a last secondary segment terminating at the second waypoint, each secondary segment being arranged at a setpoint height above the highest point of the terrain that it overlies, said setpoint height is identical for all of the secondary segments of a main segment, with any two adjacent secondary segments that are not in alignment being connected together by a vertical bar in a vertical section of said terrain and containing said main segment, wherein for a setpoint secondary length to be reached by the secondary segments that has been determined, and for Euclidean division of a main length of the main segment by the setpoint secondary length giving a quotient and a remainder:
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if said remainder is zero, then during the first stage, the main segment is subdivided into a number of secondary segments all having a real secondary length equal to said setpoint secondary length, the number of secondary segments being equal to the quotient; and if said remainder is not equal to zero, then during the first stage, the main segment is subdivided firstly into a number of secondary segments all having the setpoint secondary length, that number being equal to said quotient minus one, and secondly into a lengthened secondary segment having a lengthened secondary length equal to the sum of the setpoint secondary length plus the remainder, said lengthened secondary segment being the first secondary segment of the main segment. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of assisting the piloting of an aircraft at low altitude over terrain, in which method via a machine, during a first stage, a framework is constructed from at least one main segment of given corridor width that extends in a horizontal projection over a model of said terrain between successive first and second waypoints determined by an operator, and then during a second stage, a setpoint flight path is constructed with the help of said framework, wherein during the first stage, said main segment is automatically subdivided into a plurality of secondary segments of given corridor width so that the framework follows said terrain as closely as possible, said secondary segments going from a first secondary segment starting from said first waypoint to a last secondary segment terminating at the second wavpoint, each secondary segment being arranged at a setpoint height above the highest point of the terrain that it overlies, said setpoint height is identical for all of the secondary segments of a main segment, with any two adjacent secondary segments that are not in alignment being connected together by a vertical bar in a vertical section of said terrain and containing said main segment wherein, during the first stage, for an operator specifying a given number of secondary segments of secondary length that is to be minimized, the altitude of each secondary segment is determined relative to a given reference level, and:
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the secondary length of said given number of secondary segments is minimized to a given minimum length starting from the secondary segment having the greatest altitude and continuing in order of decreasing altitude in order to obtain said given number of minimized secondary segments; each minimized secondary segment of altitude greater than the secondary segments adjacent thereto is centered so as to obtain a minimized secondary segment that is centered about the highest point of the terrain underlying said centered and minimized secondary segment; and for said main segment including a first portion going from the first secondary segment to a centered and minimized secondary segment, for a second portion going from a centered and minimized secondary segment to the last secondary segment, and eventually for at least one intermediate portion between two centered and minimized secondary segments, the following steps are performed in each of said portions; starting from each centered and minimized secondary segment, the adjacent secondary segments are moved longitudinally to reconstitute the framework; and
thenon reaching the secondary segments of said portion that has the lowest altitude, the lowest-altitude secondary segment is modified by lengthening or shortening its secondary length so as to obtain a modified secondary segment suitable for being connected to at least one adjacent secondary segment by a vertical bar. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of assisting the piloting of an aircraft at low altitude over terrain, in which method via a machine, during a first stage, a framework is constructed from at least one main segment of given corridor width that extends in a horizontal projection over a model of said terrain between successive first and second waypoints determined by an operator, and then during a second stage, a setpoint flight path is constructed with the help of said framework, wherein during the first stage, said main segment is automatically subdivided into a plurality of secondary segments of given corridor width so that the framework follows said terrain as closely as possible, said secondary segments going from a first secondary segment starting from said first waypoint to a last secondary segment terminating at the second waypoint, each secondary segment being arranged at a setpoint height above the highest point of the terrain that it overlies, said setpoint height is identical for all of the secondary segments of a main segment, with any two adjacent secondary segments that are not in alignment being connected together by a vertical bar in a vertical section of said terrain and containing said main segment, wherein, for a setpoint secondary length to be reached by the secondary segments that have been determined, said main segment is subdivided into a plurality of secondary segments if the length of said main segment is greater than twice said setpoint secondary length.
Specification