Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
Formation Flying enables us to get high-resolution data which we have not got before. Owing to the advantages of Formation Flying, new missions such as long focus telescope, high-resolution radio interferometry, and InSAR are proposed. From the viewpoint of cost, small satellites including nanosatellites are necessary for these missions. As satellites get smaller, more efficiency in Power or fuel consumption is required. Conventional studies considered the periodic condition under CW equation and Kepler problem without any disturbance. Although, in the case of little orbital control capability as small satellites, Orbit disturbances should be considered into the periodic condition. The previous study derived the periodic condition under J2 force. In Low Earth Orbit (LEO), not only J2 force but also aero drag strongly affects the satellites’ orbit. This research considers periodic condition under aero drag and shows that Formation control makes more effectively with the proposed condition. As the characteristic of aero drag is different from J2 force, this research cannot adopt the previous approach, and focuses on energy reduction. To evaluate the proposed condition, numerical simulation with the air density model close to the real atmosphere is conducted. It shows that the proposed condition reduces the drift from periodic to 32 %.
