Helios
Impulse Space
Helios is a high-energy kick stage designed to provide same-day delivery to distant orbits for commercial, civil, and government missions, significantly reducing transit times and costs.
Typed specifications3 values
Discloses 2 of 10 fields engineers filter by in this category (category median 3).
- Specific impulse
- 380 s product page
- Propellant
- oxygen product page methane
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier5 lines, in the manufacturer's own wording
- Payload Capacity
- up to 4,000 kg
- LEO to GEO Transit Time
- less than 24 hours
- Deneb Engine Vacuum Thrust
- 67 kN (15,000 lbf)
- Deneb Engine Isp
- 380+ seconds
- Deneb Engine Propellants
- Liquid oxygen and liquid methane
About
The Impulse Space Helios spacecraft is designed to meet the space economy’s need for fast, far, and affordable movement. It offers a meaningfully better option for reaching Medium Earth Orbit (MEO) and Geostationary Earth Orbit (GEO) compared to traditional heavy-lift rockets or lengthy electric propulsion orbit raising. Helios is a highly-customizable platform capable of transporting up to 4,000 kg of payload from LEO to GEO in less than 24 hours. It flies as a payload on a medium-lift launch vehicle, igniting its engine after deployment in LEO to carry satellites directly to their final orbit. Designed to be launch vehicle agnostic, Helios expands the capability of any medium-lift launch vehicle it flies with, unlocking greater performance and enabling mission profiles that would otherwise require larger rockets or longer transit times. At its core is the Deneb engine, a powerful liquid-fed rocket engine purpose-built for high-energy missions, featuring 67 kN of vacuum thrust and 380+ seconds Isp.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.