Umbra Solar Array (Body-Steered Deployable, 120 W)
Umbra Lab Inc.
120 W body-steered tri-fold deployable solar array with premium triple-junction cells and integrated hold-down and release mechanism (HDRM).
Technical specifications
- Max Dimensions Stowed
- 12.87 in x 12.95 in x 2.90 in
- Max Dimensions Deployed
- 40 in x 13 in x 10 in
- Mass
- 2.5 kg
- Peak Power
- 120 W generation BOL (at 28°C, AM0)
- VOC
- BOL: 38.2 V (at 28°C); EOL: 37.4 V (at 28°C, 5-year estimate)
- VMP
- BOL: 34.0 V (at 28°C); EOL: 33.0 V (at 28°C, 5-year estimate)
- IMP
- BOL: 9 strings @ 445 mA = 4 total
- Electrical Interface
- Single MIL-38999 Connector
- Heritage
- Design flown on Umbra 1-12
- Production
- Assembled and tested in the USA
- Random Vibe
- Qualified to 14.16 Grms profile enveloping GEVS, Falcon 9, SpaceX Rideshare, and Electron levels
- Shock
- Qualified to 600g peak profile (attenuated GEVS, Falcon 9, SpaceX Rideshare, Electron levels)
- Operating Temperature
- -50°C to 90°C
- Survival Temperature
- -60°C to 120°C
- Total Ionizing Dose
- Designed to withstand at least 30 krad TID
About
The Umbra Body-Steered Deployable Solar Array delivers more than 120 W of reliable power in a compact, flight-proven tri-fold design for small satellites. Optimized for body-steering in Low Earth Orbit, the array features high dynamic stability and redundant, premium triple-junction solar cells with bypass diodes. Validated on Falcon 9 missions and designed for seamless integration within the Umbra Integrated System (including the Umbra Power Package), the array eliminates the need for a dedicated solar array drive, reducing mass and complexity.
Documentation
- SOLAR-ARRAY.pdf umbra.space ↗
- Umbra-Solar-Array-with-HDRM-User-Guide-5081D0001-REV-01-1-1.pdf umbra.space ↗
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
