G500
Gas-gas thruster
Launcher roll and attitude control
250–700 N · Isp >340 s
>150 cycles · >1,800 s single burn
TRL 4 · ground-tested
FOR CONSTELLATION OPERATORS
Fill an entire orbital plane from one rideshare slot.
Solutions
Problem
Rideshare launches are cheap, but every payload is dropped in the same standard orbit. Reaching the target plane and altitude afterwards costs months of low-thrust drift – or the price of a dedicated launch.
DeltaOrbit solution
One launch. Several planes. Weeks, not months.
We book the rideshare slot, integrate your satellites and fly them from the drop-off orbit to where they earn revenue – up to 340 kg per mission, across several planes and altitudes, in weeks rather than months. You receive each spacecraft already in its operating orbit.
The vehicle · MULE – Multi-Orbit Logistics Vehicle
One contract – launch, integration, delivery
Deployment sequenced across planes and altitudes
Flown on our own ground-proven methalox core
Payload
up to 340 kg
Δv
up to ~2.4 km/s
Time to operating orbit
days to weeks, not months
Reach
multiple planes and altitudes from one launch
Isp (methalox)
>340 s
On-orbit storage
multi-year, passive
Status
Cryo demo 2028 · first flight ~2029
Problem · Launch vehicles
A methalox launcher today either uses inefficient cold-gas thrusters for roll and attitude control, or carries a second, storable propulsion system just for it. Both add parts, interfaces and another constrained resource.
DeltaOrbit solution · Launch vehicles
Gas-gas methalox thrusters run the RCS on the propellant the main stage already carries – non-toxic, restartable, no second fluid system. G500 delivers 250–700 N with a minimum impulse bit below 9 Ns; G25, at 25 N, is the smallest methane/oxygen engine ever produced.
Problem · Space stations
Resupplying water and food is routine; resupplying propellant is not. Every kilogram burnt on attitude control and orbit maintenance has to be launched, docked and transferred first.
DeltaOrbit solution · Space stations
The same thrusters let a station make its own propellant. A Sabatier reactor turns crew-exhaled CO₂ and hydrogen from water electrolysis into methane and oxygen – so reboost becomes part of the life-support loop instead of a resupply line item.
Gas-gas thruster
Launcher roll and attitude control
250–700 N · Isp >340 s
>150 cycles · >1,800 s single burn
TRL 4 · ground-tested
Gas-gas thruster
Station and launcher attitude control
25 N · resonance ignition
Smallest methalox engine ever produced
TRL 3 · in hot-fire testing
Resonance igniter
RCS thrusters and mainstage engines
40 kW · <25 ms
No power, no pyrotechnics, unlimited restarts
TRL 4 · qualified CH₄/O₂ · patented
Mission need
Each mission class asks for something different. Transfer stages need specific impulse above all. Landers need deep throttling for descent. Deep-space probes need propellant that is still there after months of coast. And all three need a European supply chain.
DeltaOrbit solution
The Cryogenic Propulsion Module answers all three at once, sized to the mission. Methalox gives Isp above 340 s. Fixed-geometry injectors throttle better than 10:1 with no moving parts. Passive zero boil-off keeps tanks full through a multi-month cruise, with no coolers to fail. L500 and L25k are the same architecture at 500 N and 25 kN, sharing tanks with the G-series RCS thrusters.
Made in situ
The thrusters also run on CO/O₂, which can be produced from the Martian atmosphere – so a return stage need not carry its ascent propellant from Earth. The same zero-boil-off tanks liquefy and store ISRU propellant on the Moon and Mars for as long as the mission needs it.
Liquid main engine
Tug and transfer-stage propulsion
500 N · Isp >340 s
<1 kg · phase-agnostic
TRL 4 · >100 cycles fired
Liquid main engine
Lunar descent · heavy transfer stages
25 kN · >10:1 throttle
46 kg · turbopump-free
PDR completed 11/2025
Sovereign operators need spacecraft that can remain available, reposition when required and operate across changing mission environments. We build MOLE, the Multi-Orbit Loitering Element, to give sovereign operators true multi-orbit agility.
Pre-positioned in orbit, MOLE sits on full tanks for years – passive zero boil-off needs no coolers. When tasked, it changes orbit under its own high-Δv methalox propulsion: multi-orbit operations, not a single fixed patrol, with no dependence on a launch pad being available. Currently in pre-design.
Long-duration readiness
Multi-year storage of cryogenic propellant with no active refrigeration and no top-up.
Responsive repositioning
Restartable ignition and high thrust-to-mass move payloads in days, not months.
Multi-orbit mobility
Plane and altitude changes across LEO and beyond on one propellant load.
