Launch vehicle

With a very quick build and reactive launch, HPS will be able to carry up to 250 kg to a LEO 0° and 190 kg to a SSO (both 500 km).
The rocket will be ready to launch between 60 and 15 days.
The flight will be sold at 4M USD, which will be one of the most competitive launch price of the industry.

Dimensions100 x 1,200 cm
Weight15 Tons
Thrust20 Tons
Payload SSO 500 km190 kg
Payload LEO 500 km250 kg
Price$ 4 million (~ $ 20k / kg SSO 500km)
Reactivity60 to 15 days (under conditions)
First launch2021
Thrust modulationYes


  • Launch of microsatellites (>150 kg)
  • Launch of microsatellite rideshare (<150 kg)
  • Keeping constellations in operational condition by replacing faulty satellites
  • Participation in Earth orbit clean-up programs
  • Integration with defense systems to guarantee the safety of the French space ecosystem

Starting in 2021, HPS will offer the best solution to set a quick mission in LEO. It will carry satellites to any specific LEO in a matter of days. Individual mission, constellation completion, cubesatellites rideshare, everything is possible.


Today, the space industry uses two propulsion technologies: solid propulsion and liquid propulsion. However, both are only a compromise of ideal criteria. A third propulsive launcher technology exists: hybrid propulsion. This technology consists of injecting one of the propellants in liquid form into a combustion chamber which contains a second propellant in the solid state.

The thrust is modulated by controlling the amount of liquid propellant injected into the combustion chamber. This technology enables the payload orbit to be accurately set. Despite numerous advantages, this technology is only rarely used because of a technology lock: its performance decreases with the size of the thruster.

That's why HPS chose to develop a technological brick to unlock its full potential. With this innovation, hybrid propulsion becomes the most advantageous propulsion system among existing technologies.



Alexandre Mangeot


Following his thesis in space propulsion with CNES and Roxel, he brings his knowledge of hybrid space propulsion and his propulsion system design skills. He is at the origin of the technological innovation developed by HPS.


Sylvain Bataillard


Has worked for the Military Applications Department of CEA, as well as for Ariane Group on military programs. Originally from aeronautics and its regulatory aspects (EASA / FAA). He brings his skills in regulatory monitoring and test management.


Vincent Rocher


Having worked on military programs within Thales as well as ArianeGroup, he brings his skills in mechatronical design and manufacturing processes. Actively passionated by technology, he is always looking for new challenges.