NASA awards company contract to develop new advanced solar panels

NASA has awarded the solar panel company Solestial its second development contract, with both contracts worth more than one million dollars, to develop new advanced solar panels for use on future commercial space stations.

The 18-month SBIR Phase II contract will provide funds to support development of next generation, 50-kilowatt (kW) class solar array wings. Solestial’s silicon solar blanket technology will allow for arrays larger than any ever built, while also maintaining lower mass and competitive efficiency. The array will be developed in collaboration with Opterus Research & Development, who will develop a low-cost, novel deployment system for Solestial’s ultrathin, flexible, silicon solar blankets.

These blankets will be an upgrade from the new panels presently being deployed on ISS, that unroll like a blanket rather than unfold like hard panels. The design is lighter weight, easier to deploy, and cheaper. It will thus become a valuable product that every private space station will want to buy.

A Lucy solar panel on Lucy fails to latch properly after deployment

Partly deployed panel

Engineers at Lockheed Martin (the prime contractor) and Northrop Grumann (which built the panels) are now troubleshooting an issue with one of the solar panels on the asteroid probe Lucy, which failed to latch properly after deployment.

The NASA graphic to the right illustrates this issue, though the graphic might not accurately portray the exact circumstance at Lucy. To get more solar power, Lucy’s panels are larger, and thus were designed to unfurl like a fan rather than the more commonly used accordion design. One panel has not completed that unfurling.

NASA’s announcement tries to minimize the issue but this quote from the link makes it clear that this could be a very big problem.

It’s not yet clear whether the array in question is, in fact, fully deployed but not latched in place or whether it did not reach full deployment and is not generating the same amount of power as its counterpart. It’s also not yet clear whether Lucy can safely fire its maneuvering thrusters with an unlatched array.