IDG4 Long-Duration Radioisotope Power Unit
IDG-4 RPPU-CLASS INTEGRATION ARCHITECTURE · VERSION 5 · 2026
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ABSTRACT
IDG-4 Version 5 defines RPPU-0 as a sealed, autonomous, decay-driven power architecture. A governed decay-ionised domain operates within a static physical enclosure. Dynamic governed topology constraints define the permitted field-state envelope across the full decay life, while field-assisted extraction, long-duration engineering, the passive Metamaterial Boundary Layer, and GECDS-IDG support stable governed DC delivery. The paper develops the system architecture, power bus, environmental hardening, packaging, safety envelope, terrestrial and space platform expressions, G1–G9 graduation programme, and RPPU-1 handoff.
VERSION 5 ARCHITECTURE
RPPU-0 governs through a sealed static geometry, curvature-defined operating constraints, passive boundary conditioning, selected damping, supervised extraction, and regulated bus control. Curvature remains primary. MBL conditions selected boundary gradients, GECDS-IDG manages selected low-frequency transient response, and DIGSP-IDG coordinates curvature, boundary condition, damping response, extraction state, safety state, bus regulation, and long-duration health.
KEYWORDS
RPPU-0; radioisotope portable power unit; governed decay-ionised domain; field-assisted extraction; dynamic governed topology constraints; Metamaterial Boundary Layer; GECDS-IDG; DIGSP-IDG; long-duration autonomous power; RPPU-Lite; UAV battery sustainment.
ZENODO PUBLICATION
RPPU: A Compact, Long-Duration Radioisotope Power Unit for Autonomous Systems
https://doi.org/10.5281/zenodo.22066799LICENSABLE SYSTEM
IDG4 Long-Duration Radioisotope Power Unit
Published architecture, system, model, or governed-field design