A comment below Why are DART's solar panels aligned like this? says:

Maybe could have something to do with how much space they take up with rolled all the way in? This is also the first use of ROSA (roll-out solar array) in deep space.

Phys.org's SpaceX CRS-22 mission to space station launches water bears, squid, solar panels says:

New solar panels are headed to station to increase the energy available for research and other onboard activities. The ISS Roll-out Solar Array (iROSA) is made up of compact panels, based on technology previously demonstrated on station, that roll open like unrolling a long rug. The Expedition 65 crew is scheduled to begin preparations for supplementing the station's existing rigid panels this summer with the first pair of six new arrays.

Question: Where all is ROSA (roll-out solar array) planned to be used? Are DART and the Exp. 65's ROSAs the only two planned uses, or are there (at least likely) more? If so, what are they?



1 Answer 1


DART and EXP-55 are not the only two planned uses, in fact, ROSA will be used for many more missions.

According to Wikipedia's Roll-Out Solar Array Applications, iROSA (the scaled-up version of ROSA) will be launched on SpaceX's CRS-22, CRS-25, and CRS-26. The new solar arrays will be positioned in front of six of the current arrays and will use the existing sun tracking, power distribution, and channelization. iROSA shown in the planned configuration on the ISS In addition, ROSA is planned to be a major part of the Power and Propulsion Element for the Lunar Gateway. SSL is also looking into the commercial qualification of ROSA to use on their satellites.

Brian Spence, president of Deployable Space Systems, envisions ROSA technology as key to NASA's electric propulsion needs, and I agree that it will probably be used in many more missions because it can provide much more energy for much less weight than traditional solar panels.

  • 2
    $\begingroup$ @OrganicMarble Sorry, I was not very clear there, I'll add your picture to my answer. $\endgroup$
    – Duck
    May 30, 2021 at 14:59

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