HARDWARE / PRODUCTUpdated 25 Jul 2026

Hermes

Reaction Dynamics
Hermes

Hermes is an integrated propulsion unit for small satellites, offering responsive mobility and mission flexibility using hydrogen peroxide propellant.

Technical specifications

Propellant
Hydrogen Peroxide (HTP)
Form factor
Built around a 4U CubeSat form factor
Integration
Flexible integration for extended missions, streamlined integration into various satellite designs, custom mounting options
Propellant safety
Safer and REACH compliant alternative to hydrazine, safe to store
Performance
High thrust and quick response times (compared to electric propulsion systems), reliable performance for critical missions
Support
End-to-end support for every mission, launch and in-orbit support, technical expertise across the full satellite lifecycle

About

The RDX Hermes integrated propulsion unit is engineered to provide agility to small satellites in orbit. It combines efficiency, precision, and adaptability, allowing satellites to respond to evolving mission demands over long lifetimes. This system aims to reduce complexity, cost, and hazardous operations compared to traditional chemical thrusters. Hermes is designed for streamlined integration into various satellite designs, with options for tailored mounting and communications. It utilizes hydrogen peroxide (HTP) as a propellant, which is described as a safer and REACH compliant alternative to hydrazine, reducing handling costs, easing compliance, and minimizing environmental impact. The system supports precise positioning and agile maneuvers, helping satellites reach designated orbits, avoid collisions, and deorbit safely. Compared to electric propulsion systems, Hermes offers high thrust and quick response times, making it suitable for missions requiring flexibility and responsiveness. Its compact design and intuitive interfaces facilitate simple integration into various small satellite platforms, built around a 4U CubeSat form factor and accommodating custom mounting options. The hydrogen peroxide propellant is safe to store and delivers excellent thruster capabilities, balancing the rapid deployment of chemical propulsion and the high impulse of electric propulsion. Reaction Dynamics also provides end-to-end support, including technical expertise across the full satellite lifecycle, with support for integration, launch, and in-orbit operations.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: www.reactiondynamics.space ↗

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