Key highlights

EnduroSat's 16U CubeSat is a flight-proven nanosatellite platform for advanced missions in low Earth orbit. With class-leading internal volume — 10.3U available to the customer and a payload envelope of 218 x 218 x 254 mm — the CubeSat platform accommodates instruments that would normally push designers toward larger satellite buses, while keeping bus mass between 11.2 and 11.7 kg and leaving 24.0–24.5 kg of payload mass capacity.

The platform is built around robust payload data handling: an embedded operational-modes framework manages diverse payloads, standard control interfaces span CAN FD, RS-422, RS-485, SPI and UART, and the gross payload downlink reaches up to 1 Gbps over high-speed X-band and K-band links, with secure S-band TMTC at up to 125 kbps full duplex. Average payload power of 25–60 W (configuration dependent) supports power-hungry Earth observation and communications payloads across a mission life of up to five years, orbit dependent.

Each 16U satellite bus ships as a complete mission-ready package: integration manual, software development kit, a one-year SpaceDev subscription for development and testing, the full bus cable set, debugging harnesses and ten hours of engineering support are all included. An optional advanced three-axis reaction wheel attitude control system supports precision-pointing missions, and EnduroSat's end-to-end Space Service can place a customer payload in orbit within six months.

Applications

Earth observation missions (optical and multispectral imaging)
Communications and connectivity demonstrations in LEO
Science and technology demonstration missions
Multi-payload nanosatellite missions requiring high downlink capacity
Constellation pathfinders ahead of larger platform deployment

Key features

Flight heritage:
Flight-proven 16U nanosatellite bus, backed by EnduroSat's record of 3,500+ modules in orbit and 200+ delivered satellites.
Class-leading volume:
10.3U available volume with a 218 x 218 x 254 mm payload envelope and diverse mounting options.
Generous mass budget:
11.2–11.7 kg bus mass leaving 24.0–24.5 kg available payload mass, configuration dependent.
Payload power:
25–60 W average payload power available, configuration dependent.
High-speed downlink:
Up to 1 Gbps gross payload data rate over X-band and K-band payload communication.
Secure TMTC:
S-band telemetry and telecommand at up to 125 kbps full duplex with secure communication for telemetry, telecommands and payload data.
Standard payload interfaces:
CAN FD, RS-422, RS-485, SPI and UART payload control interfaces.
Flexible power buses:
3.3 V, 5 V, 12 V and battery-raw power rails.
Attitude control option:
Available with an advanced three-axis reaction wheel attitude control system.
Operational autonomy:
Robust payload data handling with an embedded operational modes framework.
Mission life:
5 years, orbit dependent.
Complete delivery package:
Ships with integration manual, SDK, SpaceDev 1-year subscription, full cable set, debugging cables and 10 h of engineering support.

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Last updated: 2026-06-04