Rocket motor including an embedded charge assembly (ECA) configured to support a burn rate enhancement (BRE) wire

Embedded charge assemblies support BRE wires in rocket motors, enabling efficient thrust production and instantaneous flight termination by burning with the propellant and detonating to break it up, addressing aerodynamic and safety challenges.

WO2026117576A1PCT designated stage Publication Date: 2026-06-04RAYTHEON CO
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Patent Information

Application Number
PCT/US2025/057080
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-26
Filing Date
2025-11-25
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing rocket motors with burn rate enhancement (BRE) wires face challenges in integrating safety mechanisms that do not adversely affect aerodynamics, while ensuring efficient thrust production and flight termination capabilities.

Method used

Embedded charge assemblies (ECAs) are used to support BRE wires, containing energetic materials that burn with the propellant to produce thrust and, upon detonation, break up the propellant without detonating it, thereby terminating thrust or preventing higher-order reactions.

Benefits of technology

The ECAs provide efficient thrust production during normal operation and instantaneous flight termination without affecting aerodynamics, while ensuring safety against high-order reactions.

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  • Figure US2025057080_04062026_PF_FP_ABST
    Figure US2025057080_04062026_PF_FP_ABST
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Abstract

In a rocket motor in which burn rate enhancement (BRE) wires are used to accelerate the burn rate of the solid propellent, embedded charge assemblies (EGAs) are configured as support structures for the BRE wires. Each EGA includes an energetic material that is configured to bum along with the solid propellent to produce thmst and, upon detonation, to break up the solid propellent to terminate thrust. The detonation may also be initiated as a part of process to prevent a higher-order reaction, such as in reaction to heating from a fire or other cause. By being located inside the casing, the energetic material and EGAs do not adversely affect aerodynamics of the flight vehicle of which the rocket motor is a part, such as a missile.
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Citation Information

Patent Citations

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    US11008263B2

  • Methods and systems for measuring plasma renin activity

    US11008264B2

  • Rocket motor with embedded burnable cutting explosive energetic material

    US11732676B1

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    US11746728B1

  • Rocket motor including an embedded charge assembly (ECA) configured to support a burn rate enhancement (BRE) wire

    US12454929B1