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.
Typed specifications33 values
Discloses 5 of 12 fields engineers filter by in this category (category median 3).
- Mass
- 36 000 g DIAMOND wing configuration · datasheet p.1 42 700 g OPAL wing configuration | 521 000 g PHENACITE wing configuration | 160 000 g SAPPHIRE wing configuration | 331 000 g SUNSTONE wing configuration +1
- Output power (BOL)
- 3.3 W DIAMOND wing configuration, per wing · datasheet p.1 5.3 W OPAL wing configuration, per wing | 37 W PHENACITE wing configuration, per wing | 12.9 W SAPPHIRE wing configuration, per wing | 28 W SUNSTONE wing configuration, per wing +1
- Form factor (as printed)
- deployed wing datasheet p.3
- Deployable
- yes datasheet p.1
- Supply voltage
- 12 V min · datasheet p.3 300 V max
- Array configuration
- roll-out array datasheet p.1
- Flight heritage
- Flight heritage on LEO, GEO and deep space missions; NASA programs including DART and ISS; 8 SUNSTONE ROSA wings delivered to NASA for ISS datasheet p.1
- Missions flown
- 8 datasheet p.0
- Deployed size
- deployed length 8.6 m DIAMOND wing configuration (stowed width 2.32 m) · datasheet p.1 deployed length 12.6 m OPAL wing configuration (stowed width 2.67 m) | deployed length 18.5 m PHENACITE wing configuration (stowed width 4.94 m) | deployed length 21.2 m SAPPHIRE wing configuration (stowed width 3.35 m) | deployed length 19.4 m SUNSTONE wing configuration (stowed width 3.1 m) +1
- End-of-life power
- 3 300 W datasheet p.0 5 300 W | 12 900 W | 17 600 W | 28 000 W +1
- Deployment mechanism (as printed)
- strain-energy composite booms (roll-out), no motors or complex mechanisms; optional retractable solar wings datasheet p.1
- Hinge type
- strain energy (no hinge) composite booms utilize strain energy for deployment; no motors · 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 supplier7 lines, in the manufacturer's own wording
- 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
Need the full ICD, test reports or a specific revision? Ask the supplier directly.