Preliminary design of an aerial cliff sampling system

Hawaiian cliffs present a unique flora that has been little studied until now mainly because of the difficulties to physically access this ecosystem. Recently, researchers have started using UAV imagery to analyze cliff flora, and to locate plant species of interest. The current techniques used to then reach these plants on cliffs (e.g., abseiling, helicopters) are dangerous and many sites remain completely inaccessible. This project aims at developing an aerial sampling system to support initiatives aimed at preserving this unique ecosystem. This article therefore presents the various challenges related to the environment where sampling must take place, considering the use of an aerial sampling system. Finally, the preliminary design of a platform suspended by cable under a UAV to collect plant samples on a cliff is presented.