Large Mass
PAYLOAD CAPACITY
Helios
The Distance Vehicle
Meet the kick stage transforming access to MEO, GEO, Cislunar, and beyond. Paired with a medium-lift launch vehicle, Helios provides same day delivery for large payloads from LEO to high-energy orbits — delivering heavy-lift performance at medium-lift costs. By dramatically simplifying the timeline and cost to your payload’s final destination, Helios minimizes mission complexity and unlocks months of on-orbit operations. With schedule reliability backed up by vertically integrated manufacturing, Helios is ready to fly when you are.
Same Day
LEO to GEO Delivery
Our Services
Helios InterfaceHelios CaravanHelios SharedHelios Primary
Helios
High-Energy Rapid-Delivery Kick Stage
Serviced Orbits
MEO, GTO, GEO, TLI, Earth Escape
GEO Transfer Duration
<1 Day
Payload Volume
6.5m tall x 4.5m diameter
Payload Interface
Dedicated PAFs: 2624 mm, 1575 mm, or custom Secondary: Industry-standard four-point footprints and separation rings
Delta-V
3 to 9 km/s depending on payload mass
Propulsion
1 x Deneb 67 kN (15,000 lbf) thrust engine
Propellant
Liquid oxygen and liquid methane
Reaction Control System
Main engine gimbal Cold-gas RCS thrusters
Launch Vehicle Compatibility
Falcon 9, Falcon Heavy, Starship, Terran R, New Glenn, Vulcan, Eclipse, Ariane 6, H3
Mission Configurations
Dedicated
Single customer mission
Shared
Primary with secondaries mission
Rideshare
Impulse-led, shared mission
Deneb Engine
Chemical propulsion engine, designed by Tom Mueller
Thrust
67 kN / 15,000 lbf
Propellant
Liquid oxygen and liquid methane
Cycle
Ox-rich staged combustion
Restart capable
For multi-burn missions
Our Partners
