Fig. 9: Aerial grasping in complex cluttered environments with obstacles.
From: A dexterous and compliant aerial continuum manipulator for cluttered and constrained environments

We set up three different challenging scenarios: a an L crevice (12 cm × 12 cm  × 40 cm). b Single hole and box (5 cm + 8 cm × 15 cm). AET has to pass through a hole and avoid an obstacle to reach the object. c Double holes (5 cm × 5 cm). AET has to pass through two holes and then bend to reach the object.