The answer is ‘yes, 19 times.’
Three engineers at Disney Research Pittsburgh have published a paper sexily titled “Untethered One-Legged Hopping in 3D Using Linear Elastic Actuator in Parallel (LEAP),” along with a demonstration of their oddly hypnotic creation: a one-legged hopping robot.
Specifically, the paper explains, researchers were looking to create a more movable hopping robot, because “current and previous single-legged hopping robots are energetically tethered and lack portability.” In order to do their thing, previous hopping robots needed to be tied to something, or have an external power source, or sometimes both, which made them hard to lug around.
The Disney Research bot wasn’t an unmitigated success, but it was a step forward. The video demonstration released with the paper declares that the bot’s systems, which run off two compression springs tied to a motor and actuator, “can enable hopping for up to 19 hops.”