Under NDA
Bring your hardest question. We show it on your mission in a briefing.
Under NDA, with the founder who builds Arksa.
Request a briefing- Home
- Solutions
- Compute in orbit
kW Compute in orbit
Compute, in orbit
Size an orbital compute node end to end: power through every eclipse, radiators for every watt, the orbit that keeps it in sunlight and the links that bring results down. Then compare the cost per unit of compute with a building on the ground.
- Through every eclipse
- Power
- For every watt
- Heat
- Per unit of compute
- Cost
OrbitRides the terminator
SunOrbit plane faces it
01 One consistent model
Five questions, wired together
Each step answers one sizing question. The value is in connecting them, so a change in one input flows through power, thermal, mass and cost at once.
- 1Orbit
Eclipse
How long each orbit spends in shadow, through the whole year.
- 2Power
Array and battery
The arrays and batteries that keep the compute running, to end of life, checked orbit by orbit.
- 3Thermal
Radiators
The radiator area that rejects every watt, with the Earth's own heat taken into account.
- 4Environment
Radiation and life
Radiation dose and upsets for the orbit and shielding you choose, and the lifetime you can expect.
- 5Economics
Economics
The cost of the node, line by line.
FIG. 01Orbit selection
Choose the orbit, choose the night
Compare orbits by how much of the year they spend in sunlight, and pick the one your power budget can live with.
- Eclipse seasons through the year
- Sunlight on the arrays, orbit by orbit
FIG. 02Thermal
Every watt of compute becomes heat
Size the radiators against the heat you must reject, with the Earth's own heat included.
- Radiators sized to the load
- The Earth's heat and light taken into account
02 The whole node
From compute load to mass
From your compute load to a sized node in one study. The full chain is shown in a briefing, under NDA.
03 Networking to ground
Close to users, or above them
Compare latency to your users and the downlink each orbit can sustain, on the same study.
- Latency to your users, orbit by orbit
- The downlink each orbit sustains
- Answers down, not raw data
FIG. 03Economics
An honest cost ratio
In our reference case, compute in orbit costs 6.2× a ground facility per unit of compute. See what it costs for your node, and which assumption moves it most: we run it with your costs in a briefing.
04 Checked
Numbers you can check
Checked against hand calculations and known cases on every change. See the validation results.
05 Questions
Before you size one
Yes. Bring your own compute hardware and power strategy; Arksa sizes the rest around it.
Yes: radiation dose and upsets for the orbit and shielding you choose.
On Sovereign, the whole study runs on your own servers and no study content reaches Arksa; only licence, reference-data and update checks do. See Sovereign.
Compute in orbit is included on every plan
Put the numbers in orbit
Request access to size your first node with us, or talk to us about Mission for a whole programme.