UkiUki Cocking Cart v3.1 Integrated Model of Structure, Reaction-Force Generation, and Multi-Phase Propulsion Cycle

This document presents the structural architecture, reaction-force generationmodel, and multiphase propulsion cycle of the UkiUki Cocking Cart, a pureimpulse-based vehicle that operates without chemical fuel or combustion.The system integrates an IMP reaction chamber, an auxiliary impulse mechanism,a 25° fixed nozzle, a six-wheel chassis, impact-attenuating fist units,and a phase-managed control flow that alternates between reaction-forcepropulsion, landing transition, wheel-driven motion, and re-cocking. For maritime operation, the vehicle employs the Hydro-Fluid Lift Unit (HFLU),which enables hydro-skip motion through controlled water-surface interactions.The document provides mathematical models for impulse generation, mechanicalenergy input, posture stabilization, contact mechanics, and hydrodynamic lift,along with design schematics of the onboard G-seat platform. The content is based on the author's original design concepts. AI tools were used solely as auxiliary editing and writing assistance. Licensed under CC BY-NC-SA 4.0. This record is an English-language edition of the following Japanese version: DOI: 10.5281/zenodo.18627558