Reduce your launch costs with
our dual-bell nozzle
HopSpace is the French startup that reinvents the propulsive nozzle
The most advanced space nozzle technology, the simplest to use
HopSpace designs adaptive nozzles that are economical, efficient and reusable.
Our nozzles are based on the innovative concept of dual-bell nozzle. They feature a secondary injection of gases from the combustion chamber.
This patented injection method delivers significantly higher efficiency than conventional nozzles.
By adapting to altitude changes and being reusable multiple times, HopSpace nozzles enable:
a reduction in propellant consumption
an increase in payload capacity
to reach farther orbits
thrust vectoring
Becoming a partner of HopSpace
gives you a competitive edge and increases your
opportunities to conquer space.
A rocket nozzle with a double benefit
Payload gain
The altitude-adaptative capability of our nozzles enhances performance at high altitudes, increasing the launcher's payload capacity.
Vectorization of thrust
Our expertise in secondary injection allows us to provide our partners with the capability to vectorize the launcher's thrust by about ten degrees per percentage of the main mass flow rate.
Easily integrable with any type of launcher,
HopSpace nozzle allows propellant saving and thrust vectorization.
*maximum observed during laboratory tests
**estimates made on an Ariane 5 type launcher for a geostationary transfer orbit and at a cost of 9,000 €/kg
Easily integrated on light launchers,
HopSpace's propellant nozzle allows propellant saving and thrust vectorization.
*for a geostationary transfer orbit and at a cost of 9,000 €/kg
**estimates on an Ariane 5 type launcher
HopSpace, a French start-up New Space
Designed within the ICARE laboratory of the Centre National de la Recherche Scientifique in Orléans (France), in collaboration with the University of Orléans and the University of Evry, our duall-bell nozzle has been patented and is protected internationally.
For its development and commercialization, designer engineers Brian LEGROS and Étienne MICHAUX have access to all the tools and facilities provided by the CNRS.
Brian LEGROS
Doctor in aerodynamics of propellant nozzles for the space sector.
Graduated from the University of Cranfield (UK) and Polytech Orléans (France).
Étienne MICHAUX
Doctor in space propulsion. Graduated from IPSA Paris (France).
Dual bell nozzle developed in France at the ICARE laboratory
They support us
Distinctions for our dual-bell nozzle
As a French space startup, HopSpace has received support from public bodies and private actors.
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Beneficiaries of the
French Tech Lab grant 2024This grant, offered by BPI France, allows the development of innovative start-ups in technological markets, such as the aerospace sector.
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Winner of Starthèse
2023Launched by the Ministère de l'Enseignement Supérieur et de la Recherche (France), this program values French researchers who transform their technical approach into an innovation that meets the needs of their market. Here, HopSpace has been valued as a new space startup.
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Prize winner
I-PhD 2023Organised by BPI France, this competition rewards young researchers carrying a business start-up project from their research work.
Contact us
Our dual-bell nozzle easily integrates with your launchers, enhances their performance and adapts to your existing processes. To go further, we offer personalized technical support and control tools to secure and optimize your launch campaigns.
Join HopSpace adventure!
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