Charging Station Distribution Optimization Using Drone Fleet in a Disaster

Table 1

Total distance and the calculated cost function.

Scenario	Grid size (km)	Charging stations	Distance (km)	Cost function
1	15	4	180.93	220.93
2	14	4	155.46	195.46
3	13	4	139.40	179.40
4	12	4	131.37	171.37
5	11	4	125.12	165.12
6	10	4	123.91	163.91
7	9.5	4	122.93	162.93
8	9.25	4	121.46	161.46
9	9	4	122.53	162.53
10	8	4	125.25	165.25
11	7	9	117.53	207.53
12	6	9	117.09	207.09

The minimum cost function value is obtained at a 9.25 km grid size.