// SPACECRAFT — ESPA-class smallsat bus
SF-150
FLIGHT-PROVENThe flagship. Flight-proven.
The flagship ESPA-class smallsat bus — flight-proven, payload-flexible, and the backbone of Segal constellations.
The SF-150 is the workhorse of the catalog: an ESPA-class smallsat bus carrying up to ~70 kg of payload to LEO and sun-synchronous orbits with flight-proven heritage. It is the default answer for earth observation, comms, and sensing missions.
High-efficiency Hall-effect propulsion gives it the delta-v for orbit maintenance and end-of-life disposal, while the Foundry Edge core runs collection planning and downlink scheduling onboard.
- Class
- ESPA-class smallsat
- Orbits
- LEO / SSO
- Payload cap.
- ~70 kg
- Power (EOL)
- ~700 W EOL
- Pointing
- <0.02° 3-axis
- Propulsion
- Hall-effect electric
- Integration lead
- ~10 months
- Design life
- ~5 years
Flight-proven
Heritage hardware flying today across earth-observation and comms missions.
Payload-flexible
Hosts ClearView, PA-Ka, HyperView, and more on a common mechanical and power interface.
Electric propulsion
Hall-effect thrust for orbit maintenance, phasing, and compliant disposal.
Configure this bus.
Compose the payload, price the configuration, and order it against a live constraint engine.