System-Level Design of An Antweight Combat Robot Under Mass and Safety Constraints

This paper presents the system-level design of Nautilus, an antweight combat robot developed under the strict mass and safety constraints of the one-pound (454~g) category. The proposed platform is based on a comparative assessment of candidate materials, weapon configurations, traction alternatives, and embedded electronic components, with the aim of supporting a compact, serviceable, and competition-compliant implementation. The final design adopts a Grilon main chassis, a carbon fiber top cover, and a steel eggbeater spinner to balance impact tolerance, structural support, and mass efficiency. The actuation and electronic architecture were organized to preserve subsystem compatibility, safe operation, and maintainable integration within the limited internal volume of the platform. Rather than focusing on exhaustive experimental benchmarking, the work emphasizes design justification, trade-off-driven subsystem selection, and reproducible implementation. The resulting system provides a practical reference for the development of lightweight remotely operated robots operating under similarly constrained mechanical and embedded design conditions.