Laboratory tests. Laboratory tests. (A) Time lapse of the landing process, refilling process, and subsequent launch. (B) Comparison of position and velocity.

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Laboratory tests. Laboratory tests. (A) Time lapse of the landing process, refilling process, and subsequent launch. (B) Comparison of position and velocity profiles for the experiment and the analytical model. (C) Evolution of the position of the center of gravity as the robot empties, moving ahead of the center of lift. (D) Capture of a high-powered launch in the flight arena at the end of the water jetting phase (movie S2). (E) Robot during water escape (movie S3). R. Zufferey et al. Sci. Robotics 2019;4:eaax7330 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works