Korea's humanoid robot goes full beast mode in tough pull-up test

The Korea Atomic Energy Research Institute (KAERI) has released a new video demonstrating the impressive physical capabilities of its humanoid robot, ARMstrong Dex. This dual-arm, hydraulic-powered robot, roughly human-sized, successfully performed dead-hang pull-ups while carrying an additional 44-pound (20 kg) weight. The test was designed to evaluate joint torque, hydraulic performance, and mechanical stability—key factors for robots intended to operate in hazardous disaster zones where human responders face significant risks, such as radiation exposure or unstable structures. This demonstration builds on a previous showcase where the robot performed 88-pound (40 kg) arm curls, highlighting its strength beyond typical human limits. ARMstrong Dex aims to combine human-like dexterity with enhanced strength to perform complex tasks like climbing vertical ladders, hauling heavy equipment, and removing rubble in emergency scenarios. Its dual-arm hydraulic system enables both fine motor control and brute force, critical for manipulating valves, cutting pipes, or using fire-suppression tools in disaster relief or