A Miniature Vehicle with Extended Aerial and Terrestrial Mobility

This chapter describes the design, fabrication, and field testing of a small robot (30.5 cm wingspan and 30.5 cm length) capable of motion in both aerial and terrestrial mediums. The micro-air–land vehicle (MALV) implements abstracted biological inspiration in both flying and walking mechanisms for locomotion and transition between modes of operation. The propeller-driven robot employs an undercambered, chord-wise compliant wing to achieve improved aerial stability over rigid-wing micro-air vehicles (MAVs) of similar size. Flight maneuverability is provided through elevator and rudder control. MALV lands and walks on the ground using an animal-inspired passively compliant wheel-leg running gear that enables the robot to crawl and climb, including surmounting obstacles larger than its own height. Turning is accomplished through differential activation of wheel-legs. The vehicle successfully performs the transition from flight to walking and is able to transition from terrestrial to aerial locomotion by propeller thrust on a smooth horizontal surface or by walking off a vertical surface higher than 6 m. Fabricated of lightweight carbon fiber the ~100 g vehicle is capable of flying, landing, and crawling with a payload exceeding 20% its own mass. To our knowledge MALV is the first successful vehicle at this scale to be capable of both aerial and terrestrial locomotion in real-world terrains and smooth transitions between the two.

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