How can such a small machine pull off such great heights? As the Veritasium video states, there are some technical requirements for something to be classified as a jump — for there can’t be fuel burned like in a rocket or a launch mechanism that doesn’t stay with the projectile, like with a bow and arrow. So, the world’s highest jumping robot must only rely on its own design and structure to leap into the air. The robot is propelled forward by four carbon fiber arches that are bound to a middle support axle by elastic bands.
The bottlenose-like compartment on the top of the robot holds a motor, connected to the axle by a string. When the motor is turned on, it winds up the string, thus shorting the middle support and forcing the carbon fiber arches to bow. The mounting tension in the arches and elastic bands acts as a spring, and when a trigger by the motor suddenly releases the wound-up string, the arches and elastic bands snap back into shape, forcefully thrusting the robot upward. Its height can be credited to its lightweight structure, the gradual build-up of energy through the winding string, and the elastic energy of its material. The resulting spring is incredibly efficient — efficient enough to conquer multiple stories in single bounds.
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