S-CLASS Satellite Bus
York Space Systems
The S-CLASS is York Space Systems’ flagship satellite bus, a 3-axis stabilized spacecraft designed for mass manufacturing and intended for use in large constellations. The platform supports payloads up to 85 kg and provides up to 500 W of peak power, with 6-year design life on orbit. The S-CLASS bus is highly modular and has […]
Typed specifications18 values
Discloses 5 of 7 fields engineers filter by in this category (category median 3).
- Mass
- 85 kg product page
- Power consumption
- 274 W product page
- Design lifetime
- 2 years min · GEO and cislunar (2+ years) · datasheet p.1 5 years min · LEO (5+ years)
- Form factor
- custom datasheet p.0 ESPA ESPA-class
- Orbit
- GEO 2+ years in GEO; GEO proximity ops · datasheet p.1 LEO 5+ years LEO | lunar cislunar
- Max payload mass
- 85 kg min · printed '85kg+ payload mass' · datasheet p.1
- Payload envelope (L × W × H)
- 24” x 24” x LV* stowed payload volume; *height dependent on LV · datasheet p.1 24" x 24" x LV stowed payload volume; height dependent on launch vehicle
- Power available to payload
- 274 W payload peak power · datasheet p.1
- Subsystems included
- flight software YORK flight and ground software · datasheet p.1 ground segment YORK ground software; ground station services available
- Payload board format
- custom datasheet p.0
- Flight heritage
- Flight proven modular design; in production datasheet p.1
- Satellite class
- ESPA-class versatile, ESPA-class S-CLASS platform · datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier4 lines, in the manufacturer's own wording
- Lifetime
- 5+ years LEO, 2+ in GEO and cislunar
- Payload volume
- 24" x 24" x LV* stowed
- Payload mass
- 85 kg+
- Payload peak power
- 274 W
About
The S-CLASS is York Space Systems’ flagship satellite bus, a 3-axis stabilized spacecraft designed for mass manufacturing and intended for use in large constellations. The platform supports payloads up to 85 kg and provides up to 500 W of peak power, with 6-year design life on orbit. The S-CLASS bus is highly modular and has been flight-proven across more than 20 missions, with launches via SpaceX Falcon 9, Rocket Lab Electron, and other vehicles. The bus incorporates an integrated propulsion system and advanced attitude control, and is manufactured at York Space’s facility in Denver, Colorado. The S-CLASS was selected by the US Space Force for multiple SDA (Space Development Agency) Tranche 0 Tracking Layer satellites.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.