Reaction Dynamics was founded in 2017 to develop a breakthrough hybrid propulsion technology that solves the problems of classical hybrid rocket engines. Our propulsion systems can burn for longer while maintaining highly efficient combustion and we have used this technology to develop systems for launch and in-space propulsion. Regardless of your mission, RDX propulsion solutions can help you achieve your mission objectives
Orbital Transfer Vehicle (OTV)
High-power chemical thruster to quickly deliver customer satellites to orbit.
Dedicated Launch
Dedicated Launch for a fraction of the price of the competition with our Aurora launch vehicle
In-Space Propulsion
Flexible green chemical thruster for station keeping, collision avoidance and sustainable de-orbiting.
Offered by competitors
Our engines leverage additive manufacturing techniques to create intricate, mass optimized geometries that could not be created any other way. By owning and operating our own 3d printers, we can iterate on engine designs fast and reduce manufacturing lead times from weeks to days.
Our state-of-the-art test facility allows us to test engines fast and often, iterating quickly to improve our designs and refine performance
Engine Test Cells
Total Tests Performed
Tests Completed In a Single Day
Aurora will be the first hybrid rocket to reach orbit. Leveraging Reaction Dynamic's patent-pending propulsion system, Aurora's engines are able to maintain the efficiency and burn time needed to power an orbital launch vehicle while being  safer, more reliable, and more affordable than a liquid-fueled booster. 
Aurora's fuel is solid and non-toxic, eliminating the risk of pollutant release in the event of a hazard or emergency.
Payload to LEO
Fairing Diameter
Designed for
Launch Cadence
Our range of chemical thrusters enable your satellite to travel further than ever before. Reaction Dynamics thrusters can be used for collision avoidance, proximity operations, orbit transfers, and deorbit at end of life. We use a storable green monopropellant that will last for years on orbit and offers one of the highest density impulses of any thruster.
Micro OTV
Designed for cubesat and smallsat mobility and fitting in a 12U form factor, the Micro OTV provides point-to-point transportation and deployment of the customer payload in the desired orbit. It will deliver said payload within a 6-day deployment window, instead of the 6 months typically required, allowing customers to generate revenue earlier and extending the useful life of their spacecraft. 

The RDX Micro OTV has the highest total impulse of any system of its size, enabling smallsats to go further than ever before.
> 29,000 Ns
Bachar Elzein
Bachar is the founder and CEO of Reaction Dynamics since its inception in May 2017. 3 times in a row, he was the winner of the Intercollegiate Rocket Engineering Competition, now known as the Spaceport America Cup, even competing against current CEOs of other companies. Prior to his leadership role, Bachar worked as a researcher in combustion dynamics at the Multiphase and Reactive Flows Laboratory at École Polytechnique from 2015 to 2016, where he established a successful test facility in Mojave, CA, directing over 15 tests. His contributions also include six published papers on crucial propulsion-related intellectual property, which played a pivotal role in the creation of Reaction Dynamics. Notably, Bachar oversaw the first-ever test-fire of a hypergolic hybrid rocket engine in 2017, prompting a significant contribution from the Canadian Space Agency.
Marc Abou Rjeily
With 17 years of experience in Investment Banking across London, Dubai, and New York, Marc has built a robust professional portfolio. His former role as the Managing Director and Co-Head of Capital Markets at HSBC for the Middle East, North Africa, and Turkey Region showcased his expertise in a wide array of financing instruments, encompassing Debt, Equity, Derivatives, Loans, Private Placements, Project Bonds, Risk Solutions, Rating Advisory, and structured Products. Throughout his career, Marc has played pivotal roles in transactions exceeding $500 billion in debt for some of the world's most sophisticated global borrowers. Marc holds a Bachelor of Commerce (BCom) degree from McGill University, specializing in Finance, with a minor in Mathematics, which underlines his strong educational foundation in the financial sector.
Maxime Goulet-Bourdon
Maxime obtained a Bachelor’s in Aerospace Engineering from Polytechnique University (2017). During his studies, Maxime interned at CAE on their Flight Performance & Aerodynamics Division. Maxime later joined Bombardier, providing technical support in Sales. In 2018, Maxime joined Reaction Dynamics as Propulsion Testing Lead responsible for Fluid Power Controls Systems Design. He has since been involved in all aspects of vehicle design, testing and propulsion. Prior to becoming Chief Operating Officer, Maxime was Head of Test & Launch - planning, managing, and executing Reaction Dynamics’ rocket propulsion systems tests & launch systems operations.
Remi Lecerf
Remi earned a M.Sc. in Aeronautics from Ecole de L’air et de L’espace, as well as an MBA from Toulouse School of Management (France). Remi also attended Ecole de Guerre for Military & Strategic Leadership as a Senior Commanding Officer in the French Air Force. Remi held positions as a Pilot & Deputy Chief of Operation in the French Military, Director of International Business Development for CAE, VP of Strategy at Presagis (CAE affiliate), Chief Commercial Officer at NorthStar Earth & Space Inc., and currently leading all Strategic Initiatives within Reaction Dynamics.
Christophe Leclerc
Structures Design Lead
William Georges
Thrust Chambers Lead
Grégoire Marchetaux
Avionics, EGSE, GNC Lead
Bruno Geoffrion
Bruno served as a SpaceX Engineer from 2007 to 2015, contributing to the innovative work of the company during that time. Following his tenure at SpaceX, Bruno transitioned into the role of Engineering Manager at Virgin Orbit from 2015 to 2017, showcasing his leadership and management skills. He holds a Master's degree in Biochemistry from the University of Illinois at Urbana-Champaign, as well as dual Bachelor's degrees in Chemical Engineering and Biochemistry from the University of Ottawa.
Doug Sinclair
Doug founded Sinclair Interplanetary in 2001, a company specializing in the development of components enabling satellites to measure and control their pointing direction. Today, over 100 satellites in orbit rely on Sinclair Interplanetary equipment. In April 2020, Doug sold the company to Rocket Lab, and moved to New Zealand. Doug holds a BASc in Aerospace Engineering from the University of Toronto in Canada, and an MSc in Satellite Engineering from the University of Surrey in the UK.
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