A control device for controlling a flight vehicle including: a solar cell panel; and an antenna for forming a communication area on the ground to provide wireless communication service for a user terminal in the communication area by using electric power generated by the solar cell panel, the control device comprising: a control unit (140, 230) for controlling a first flight vehicle and a second flight vehicle so that during a first time period, the second flight vehicle of the first flight vehicle and the second flight vehicle is caused not to cover a first target area and the first flight vehicle is caused to cover the first target area, and during a second time period following the first time period, the first flight vehicle is caused not to cover the first target area and the second flight vehicle is caused to cover the first target area, wherein the control unit (140, 230) controls the first flight vehicle and the second flight vehicle so that the second flight vehicle is caused not to form the communication area during the first time period and the first flight vehicle is caused not to form the communication area during the second time period; characterized in that the control device further comprises: a wind speed information acquisition unit for acquiring wind speed information indicative of a wind speed in a flight area (310, 320) where each of a plurality of flight vehicles including the first flight vehicle and the second flight vehicle is flying, wherein when a wind speed in the flight area (310, 320) where the first flight vehicle is flying is smaller than a first threshold value, the control unit (140, 230) controls the first flight vehicle in a first mode controlling so that the first target area is covered only by the first flight vehicle, and when the wind speed in the flight area (310, 320) where the first flight vehicle is flying is greater than the first threshold value, the control unit (140, 230) controls the first flight vehicle and the second flight vehicle in a second mode controlling so that the second flight vehicle is caused not to cover the first target area and the first flight vehicle is caused to cover the first target area during the first time period, and the first flight vehicle is caused not to cover the first target area and the second flight vehicle is caused to cover the first target area during the second time period. a control unit (140, 230) for controlling a first flight vehicle and a second flight vehicle so that during a first time period, the second flight vehicle of the first flight vehicle and the second flight vehicle is caused not to cover a first target area and the first flight vehicle is caused to cover the first target area, and during a second time period following the first time period, the first flight vehicle is caused not to cover the first target area and the second flight vehicle is caused to cover the first target area, wherein the control unit (140, 230) controls the first flight vehicle and the second flight vehicle so that the second flight vehicle is caused not to form the communication area during the first time period and the first flight vehicle is caused not to form the communication area during the second time period; characterized in that the control device further comprises: a wind speed information acquisition unit for acquiring wind speed information indicative of a wind speed in a flight area (310, 320) where each of a plurality of flight vehicles including the first flight vehicle and the second flight vehicle is flying, wherein when a wind speed in the flight area (310, 320) where the first flight vehicle is flying is smaller than a first threshold value, the control unit (140, 230) controls the first flight vehicle in a first mode controlling so that the first target area is covered only by the first flight vehicle, and when the wind speed in the flight area (310, 320) where the first flight vehicle is flying is greater than the first threshold value, the control unit (140, 230) controls the first flight vehicle and the second flight vehicle in a second mode controlling so that the second flight vehicle is caused not to cover the first target area and the first flight vehicle is caused to cover the first target area during the first time period, and the first flight vehicle is caused not to cover the first target area and the second flight vehicle is caused to cover the first target area during the second time period. a wind speed information acquisition unit for acquiring wind speed information indicative of a wind speed in a flight area (310, 320) where each of a plurality of flight vehicles including the first flight vehicle and the second flight vehicle is flying, wherein when a wind speed in the flight area (310, 320) where the first flight vehicle is flying is smaller than a first threshold value, the control unit (140, 230) controls the first flight vehicle in a first mode controlling so that the first target area is covered only by the first flight vehicle, and when the wind speed in the flight area (310, 320) where the first flight vehicle is flying is greater than the first threshold value, the control unit (140, 230) controls the first flight vehicle and the second flight vehicle in a second mode controlling so that the second flight vehicle is caused not to cover the first target area and the first flight vehicle is caused to cover the first target area during the first time period, and the first flight vehicle is caused not to cover the first target area and the second flight vehicle is caused to cover the first target area during the second time period.