S-Class
York's small satellite bus, designed for mass manufacture and for constellations, carrying payloads of 85 kg or more.
Why it matters
Constellations like the Space Development Agency's need many identical satellites quickly. A bus built on a production line keeps unit cost and delivery time down.
How the technology works
S-Class is a three-axis stabilized bus that fits ESPA rideshare ports and gives about 500 W peak power, extensible to 1 kW. York says it was designed for mass manufacture.
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction