Collision avoidance method and device for an aircraft formation relative to an intrusive aircraft

A collision avoidance device for an aircraft formation, relative to at least one intrusive aircraft external to the aircraft formation, the aircraft formation comprising a lead aircraft and at least one following aircraft, the device comprising:

• a formation flight management unit with which all aircraft of the aircraft formation are equipped and configured to manage a formation flight thereof;
• and
• a management assembly comprising:
• a first data reception unit configured to receive, for at least one aircraft of the aircraft formation, information on a risk of a collision with the intrusive aircraft;
• a first decision unit comprising a processor configured to generate an avoidance decision upon the reception of collision risk information concerning at least one aircraft of the aircraft formation, the avoidance decision comprising a coordinated avoidance maneuver intended for all the aircraft of the aircraft formation, the coordinated avoidance maneuver being determined to avoid the collision with the intrusive aircraft while maintaining the formation flight when it is applied to all the aircraft of the aircraft formation, wherein the first decision unit is configured to implement a predetermined avoidance logic;
• and
• a first data transmission unit configured to transmit the avoidance decision comprising the coordinated avoidance maneuver to each aircraft of the aircraft formation.

An anti-collision system for an aircraft, comprising:

• a transponder;
• at least one antenna;
• an alert unit;
• a display;
• and
• a collision avoidance device comprising:
• a formation flight management unit with which all aircraft of the aircraft formation are equipped and configured to manage a formation flight thereof;
• and
• a management assembly comprising:
• a first data reception unit configured to receive, for at least one aircraft of the aircraft formation, information on a risk of a collision with the intrusive aircraft;
• a first decision unit comprising a processor configured to generate an avoidance decision upon the reception of collision risk information concerning at least one aircraft of the aircraft formation, the avoidance decision comprising a coordinated avoidance maneuver intended for all the aircraft of the aircraft formation, the coordinated avoidance maneuver being determined to avoid the collision with the intrusive aircraft while maintaining the formation flight when it is applied to all the aircraft of the aircraft formation, wherein the first decision unit is configured to implement a predetermined avoidance logic;
• and
• a first data transmission unit configured to transmit the avoidance decision comprising the coordinated avoidance maneuver to each aircraft of the aircraft formation.