ROSA Roll-Out Solar Array (Redwire / DSS)
Deployable Space Systems (DSS) — now Redwire
Blanket-type roll-stow solar array from Redwire (DSS heritage) — flight proven on ISS iROSA (boosted power by 30%), DART, and in development for Lunar Gateway PPE.
Key figurescomparable across the catalogue
- Power
- 30,000 W
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Array type
- Roll-stowable blanket photovoltaic
- Flight heritage
- ISS iROSA (6 wings), DART mission
- Iss power increase
- ~30% (160 kW → ~215 kW total station power)
- In development
- Lunar Gateway Power & Propulsion Element (PPE), 2 wings
- Stow configuration
- Compact cylindrical cannister
- Key advantage
- No hinges, latches, or rigid panels — blanket deployment
- Manufacturer
- Redwire (formerly Deployable Space Systems / DSS)
About
The Roll-Out Solar Array (ROSA), originally developed by Deployable Space Systems (DSS) and now produced by Redwire, is a high-performance, roll-stowable photovoltaic array that eliminates the hinges, latches, and rigid panels of traditional solar wings. The blanket structure deploys by unrolling from a compact cylindrical cannister, providing excellent mass efficiency and packaging density for missions where stow volume is at a premium.
ROSA has achieved extensive flight heritage. The iROSA (International Space Station Roll-Out Solar Array) upgrade program saw six ROSA wings installed on the ISS, increasing total station power generation from approximately 160 kW to 215 kW — a 30% improvement. ROSA also flew on the DART planetary defense mission and two ROSA wings are in production for the Lunar Gateway Power and Propulsion Element (PPE), demonstrating the technology’s readiness for cislunar missions.
Redwire’s expanded solar array portfolio includes ELSA (Extensible Low-Profile Solar Array) for constellation smallsats, FACT (Flexible Advanced Concentrator Technology) for high-concentration applications, HiPASS (High-Power Rigid Array Solution for SmallSats), and MADDIE (Modular Array for Direct Distribution of Integrated Energy). Spec sheets for all products are available at rdw.com.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.