Sector search and rescue method for helicopter flight management system

The invention discloses a sector search and rescue method for a helicopter flight management system. The sector search and rescue method comprises the following steps of step 1), determining an initial waypoint of sector search and rescue; step 2), determining an initial track angle of the sector search and rescue; step 3), determining a search radius of the sector search and rescue; step 4), determining a sector angle of the sector search and rescue; step 5), calculating a transition waypoint of the sector search and rescue; and step 6), calculating the flight trajectory of the sector searchand rescue. The sector search and rescue method for the helicopter flight management system provided by the invention can simplify the search and rescue process of a helicopter pilot, improve the search and rescue efficiency, ensure the smooth implementation of tasks, solve the problem that the existing search and rescue method relies heavily on the pilot's driving technique and the accuracy of anavigation sensor, is diff