Hypergolic compositions and uses thereof

A hypergolic composition using specific amines and dissolved transition metal salts in solvents addresses performance and stability challenges, providing stable and efficient hypergolic ignition with reduced catalyst content and improved storage stability.

WO2026132380A1 Publication Date: 2026-06-25ARKADIA AEROSPACE PROPULSION & TRANSPORTATION SYSTEMS SL
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Patent Information

Application Number
PCT/EP2025/088291
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-20
Filing Date
2025-12-19
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing hypergolic propellant systems face challenges in achieving performance comparable to traditional hypergolic propellants in terms of ignition delay times, combustion efficiency, specific impulse, and long-term storage stability while maintaining compatibility with existing propulsion systems, particularly due to issues with complete solubilization of metal salts and potential clogging of propulsion hardware.

Method used

A hypergolic composition comprising specific amines, organic solvents, and completely dissolved transition metal salts, specifically copper(II) acetate, which synergistically dissolve in the solvent-amine system, forming a stable and hypergolic fuel mixture when combined with an oxidizer.

Benefits of technology

The composition achieves stable, non-toxic, and efficient hypergolic ignition with reduced catalyst content, maintaining performance comparable to traditional systems and ensuring long-term storage stability without clogging issues.

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Abstract

The present invention relates to a composition comprising at least one amine selected from the group consisting of N,N,N',N'-tetramethylethylenediamine, N,N,N',N'- tetramethylpropylenediamine, 1,8-diazabicyclo[5.4.0]undec-7-ene, N,N- dimethylethylenediamine, 4-methylmorpholine, dimethyl-(2-azidoethyl)amine and mixtures thereof; at least one organic solvent selected from the group consisting of acetonitrile, dimethyl isosorbide, acetone, dimethylsulfoxide, and mixtures thereof; and at least one carboxylic, nitrate, or sulfate salt of a transition metal; wherein the transition metal is completely dissolved in the composition. The invention also relates to hypergolic compositions and uses thereof.
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