Griffiths Canon — Technical Paper A Modular NH₃ Production Architecture for Sovereign Aviation Fuel Independence

Zenodo Description — Modular NH₃ Plant Architecture (v2)AEMS LLC – Griffiths Canon Technical Paper The AEMS LLC Modular NH₃ Aviation Fuel Plant (v2) defines a complete, electrically driven, sovereign fuel‑production architecture for regional and remote aviation operators. The system converts seawater + electricity into liquid ammonia (NH₃) using a four‑block closed hydrogen loop: MW‑driven hydrogen production from seawater (Block 1, Type I‑W‑MT coastal variant), modular Haber–Bosch NH₃ synthesis (Block 2, HB/HB‑M), standard NH₃ storage and logistics (Block 3), and onboard NH₃ cracking back to hydrogen for propulsion (Block 4, Type I‑A/D‑A). No hydrogen is stored at any point in the chain. NH₃ is the sole energy carrier, enabling ambient‑temperature storage, compatibility with existing global logistics, and zero‑carbon combustion at the point of use. The architecture is the upstream fuel‑supply system for the H₂‑EM Aero Engine v1.3 — AEMS LLC’s zero‑stored‑hydrogen, on‑demand NH₃‑cracking aviation engine for Lycoming and Continental piston–propeller aircraft. The plant produces the liquid NH₃ feedstock consumed by the onboard Type I‑A/D‑A cracker, closing the hydrogen loop from seawater to thrust. Block 1 replaces electrolysers with the Type I‑W‑MT multi‑tube microwave cracking array, fed directly from seawater via integrated reverse‑osmosis desalination. This eliminates membranes, high‑purity water requirements, hydrogen compression, and electrolyser stack replacement cycles.Block 2 uses a modular, electrically heated Haber–Bosch loop (HB/HB‑M) to synthesise NH₃ from H₂ and N₂ with >97% overall conversion via recycle.Block 3 stores NH₃ in standard ~8.6 bar pressure vessels with 20‑day reserve capacity and tanker distribution to satellite airfields.Block 4 (onboard) cracks NH₃ → H₂ + N₂ on demand using the Type I‑A/D‑A microwave module, eliminating all compressed or cryogenic hydrogen storage and supplying the H₂‑EM Aero engine directly. Key advantages: • Zero stored hydrogen across the entire chain• Ambient‑temperature NH₃ storage using established industrial vessels• Seawater as the only feedstock; no external water supply required• Fully electrically driven; compatible with wind, solar, or grid power• Zero CO₂ at point of use; NH₃ slip controlled to