ROSA — Roll-Out Solar Array
Roccor (Redwire)
The Roll-Out Solar Array (ROSA) is Redwire’s flagship solar power product, a flexible, rollable photovoltaic array that deploys on-orbit via stored strain energy in its composite boom structure — requiring no motors, pyrotechnics, or complex mechanisms. First demonstrated on the International Space Station in 2017, ROSA and its iROSA derivative have achieved a 100% on-orbit […]
Typed specifications33 values
Discloses 4 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 +6
- Output power (BOL)
- 3.3 W DIAMOND wing configuration · datasheet p.1 5.3 W OPAL wing configuration | 37 W PHENACITE wing configuration | 12.9 W SAPPHIRE wing configuration | 28 W SUNSTONE wing configuration +1
- Form factor (as printed)
- deployed wing datasheet p.2
- Deployable
- yes datasheet p.1
- Supply voltage
- 12 V min · datasheet p.4 300 V max | 12–300 V can operate from 12V to >300V
- Array configuration
- roll-out array rollable configuration, roll-up stowed · datasheet p.1
- Flight heritage
- Flight heritage on key NASA programs, including DART and ISS; heritage on LEO, GEO and deep space missions datasheet p.1 DART and ISS
- Deployed size
- deployed length 8.6 m, stowed width 2.32 m DIAMOND wing configuration · datasheet p.1 deployed length 12.6 m, stowed width 2.67 m OPAL wing configuration | deployed length 18.5 m, stowed width 4.94 m PHENACITE wing configuration | deployed length 21.2 m, stowed width 3.35 m SAPPHIRE wing configuration | deployed length 19.4 m, stowed width 3.1 m SUNSTONE wing configuration +1
- Deployment mechanism (as printed)
- strain-energy composite booms, roll-up stowed configuration, no motors or complex mechanisms; booms become the array primary structure when deployed datasheet p.1
- Hinge type
- strain energy (no hinge) composite booms use strain energy; no motors or complex mecha… · 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 supplier11 lines, in the manufacturer's own wording
- Rosa diamond
- BOL power 3.3 kW; mass 36 kg; deployed length 8.6 m; stowed width 2.32 m
- Rosa opal
- BOL power 5.3 kW; mass 42.7 kg; deployed length 12.6 m; stowed width 2.67 m
- Rosa sapphire
- BOL power 12.9 kW; mass 160 kg; deployed length 21.2 m; stowed width 3.35 m
- Rosa tanzanite
- BOL power 17.6 kW; mass 180 kg; deployed length 24.8 m; stowed width 4.15 m
- Rosa sunstone
- BOL power 28 kW; mass 331 kg; deployed length 19.4 m; stowed width 3.1 m
- Rosa phenacite
- BOL power 37 kW; mass 521 kg; deployed length 18.5 m; stowed width 4.94 m
- Bus voltage range
- 12 V to >300 V (configurable)
- Deployment mechanism
- Stored strain energy in composite boom (no motors required)
- Array wings
- Optional retractable configuration available
- On-orbit success rate
- 100% across all deployed missions
- Flight heritage
- ISS iROSA (4 pairs delivered), NASA DART, Lunar Gateway PPE (contracted)
About
The Roll-Out Solar Array (ROSA) is Redwire’s flagship solar power product, a flexible, rollable photovoltaic array that deploys on-orbit via stored strain energy in its composite boom structure — requiring no motors, pyrotechnics, or complex mechanisms. First demonstrated on the International Space Station in 2017, ROSA and its iROSA derivative have achieved a 100% on-orbit deployment success rate across all ISS upgrades, NASA’s DART asteroid-redirect mission, and contracts for the Lunar Gateway Power and Propulsion Element. The architecture uses modular photovoltaic blankets assembled onto rollable composite booms, enabling the array to stow into a compact cylinder for launch and deploy to full span without human or mechanical assistance. Six ROSA configurations span the commercial and government power envelope: Diamond (3.3 kW / 36 kg), Opal (5.3 kW / 42.7 kg), Sapphire (12.9 kW / 160 kg), Tanzanite (17.6 kW / 180 kg), SunStone (28 kW / 331 kg), and Phenacite (37 kW / 521 kg). Bus voltage is configurable from 12 V to over 300 V. Optional retractable wings support on-orbit reconfiguration. ROSA is also the basis for Redwire’s ELSA (Extensible Low-Profile Solar Array) announced in 2024, targeting higher mass-specific power for next-generation applications. Redwire (incorporating the former Deployable Space Systems / DSS and Roccor technologies) has delivered four pairs of iROSA wings to the ISS, each extending operating life by powering the station’s expanded crew and science complement.
Documentation
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