Proposal and experimental validation of a design strategy for a UAV with a passive rotating spherical shell. - Shoma Mizutani; Yoshito Okada; Carl John Salaan; Takuma Ishii; Kazunori Ohno; Satoshi Tadokoro (IROS, 2015)

Close visual bridge inspection using a UAV with a passive rotating spherical shell. - Carl John Salaan; Yoshito Okada; Shoma Mizutani; Takuma Ishii; Keishi Koura; Kazunori Ohno; Satoshi Tadokoro (J. Field Robotics, 2018)