← Research and engineeringAn engineering companion to the orbital research, with dimensions, mass allocations, and twelve figures. The proposed workloads originate on Earth, run in orbit, and return their results to the ground.
Engineering archive / OC-250 / Revision A
Engineering a 250 kW Orbital Compute Satellite
The 250 kW IT OC-250 concept covers power, energy storage, radiators, structure, interfaces, and verification requirements. This central-core configuration precedes the mosaic architecture.
Preliminary study, not flight-qualified. Original document preserved in full.
Document scope
Sizing the first system.
- How should power, cooling, and compute be arranged in an initial orbital concept?
- Which interfaces and allocations need verification before the components are detailed?
Reading this revision
Before the mosaic architecture.
Revision A studies a central structure carrying compute and spacecraft support equipment, with deployable photovoltaic arrays and radiators. Later studies explored a different arrangement: a mosaic of tiles and several independent vehicles. This archive traces that evolution; it describes a different configuration from Revisions C and D.
A Phase A concept that predates the Revision C mosaic studies and Revision D drawings. Dimensions and masses from these revisions are not interchangeable. The document sets out assumptions and verification requirements; it does not constitute a qualified system, a completed preliminary design review, or a manufacturing package.