Hermes: Responsive mobility for small satellites

An integrated propulsion unit designed for unparalleled mobility and mission flexibility for small satellites.

Built-in avionics to allow simple customer interfacing. Conducts continuous health monitoring as well as system control.

Two pressurant tanks maintain pressure in the propellant tank, ensuring consistent thrust through mission life.

1N mono-propellant thruster decomposes 98% H2O2.

Stores liquid H2O2, the non-toxic fuel enabling better-than-hydrazine density impulse.

Hermes

The RDX integrated propulsion unit is engineered to deliver agility to small satellites in orbit. Combining efficiency, precision, and adaptability, it enables satellites to respond to evolving mission demands over long lifetimes, all while reducing complexity, cost and hazardous operations compared to traditional chemical thrusters.

5 KG

Mass

5 YRS

Operational lifetime in orbit

98% H₂O₂

Storable green propellant

40%

Higher density impulse than hydrazine

Specs

Density impulse

2740 Ns/L

Total impulse

5000 Ns

Specific impulse (ISP)

185 s

Standard dimensions

20 x 20 x 10 cm

Peak power consumption

14.7 W

Average power consumption

<1 W

A best-in-class satellite thruster

Flexible integration for extended missions

Designed for streamlined integration into various satellite designs, with options for tailored mounting and communications.

Sustainable propellant for satellite operations

HTP offers a safer and REACH compliant alternative to hydrazine, reducing handling costs, easing compliance, and minimizing environmental impact.

Reliable performance for critical missions

Supporting precise positioning and agile maneuvers, helping satellites reach designated orbits, avoid collisions, and deorbit safely.

Enhancing  satellite mobility

Compared to electric propulsion systems, Hermes' high thrust and quick response times make it ideal for missions that demand flexibility and responsiveness.

High thrust level for responsive applications

Flexible satellite integration options

Enabling satellite mobility capabilities

Compact design, streamlined integration

With compact design and intuitive interfaces, Hermes is designed for simple integration into a variety of small satellite platforms. Built around a 4U CubeSat form factor and accommodating custom mounting options, it offers a high degree of flexibility without compromising on performance.

A safer alternative to Hydrazine

High density impulse enables lower volume required than traditional chemical propulsion

Dimensions, interfaces, and COMS protocols customized on request

Storable, safe and built for excellence

Hermes uses hydrogen peroxide, a propellant that is both safe to store and delivers excellent thruster capabilities. The propellant's high-density impulse balances the rapid deployment of chemical propulsion and high impulse of electric propulsion to set a new standard for chemical propulsion systems.

Up to 5 years of operational reliability in orbit

Best-in-class density impulse for superior performance

Storable propellant for sustainable operations

End-to-end support for every mission

Launch and in-orbit support

Partnering with RDX means securing technical expertise across the full satellite lifecycle, with support towards integration, launch, and in-orbit operations to ensure reliable performance every step of the way.

Confidence assured

RDX satellite propulsion systems are designed and tested to deliver enhanced satellite capabilities throughout their lifetime in orbit, providing operators with peace of mind to focus on primary operations.

Explore more technical details

Want to dive deeper into Hermes, understand the costs or learn more about configuration options? Share your email and we’ll send you a data sheet with all the specifications you need.