CYBERVERTEX

ISS crew installs seventh roll-out solar array during milestone 100th U.S. spacewalk

NASA and Canadian Space Agency astronauts completed a seven-hour station power upgrade on October 29, with one final roll-out array still planned for November.

What happened

NASA astronaut Anil Menon and Canadian Space Agency astronaut Joshua Kutryk completed a spacewalk outside the International Space Station on October 29, installing and deploying the station's seventh roll-out solar array. NASA's mission blog says the excursion ended at 3:08 p.m. Eastern after seven hours and 11 minutes, with the new array connected to the 2A electrical power channel. The crew also completed preparatory work for a further spacewalk planned for November 5. The operation was designated the 100th U.S. spacewalk from the station and the 285th excursion supporting its assembly, maintenance and upgrades. The Times of India independently reported the completed installation, crew assignments and timing on October 30. The work is a completed hardware milestone, not merely a launch or construction proposal.

Why it matters

The International Space Station depends on electrical generation for research equipment, life-support systems, communications and everyday operations. Roll-out arrays supplement the station's older solar wings, adding capacity without requiring similarly large rigid structures to be launched in one piece. NASA says the full eight-array program is designed to raise available power by up to 30 percent, from roughly 160 kilowatts to 215 kilowatts. That is the program's expected total benefit, not a measurement attributable solely to the seventh array. NASA also connects the additional capacity to critical operations, including the station's eventual controlled deorbit. Completing another installation reduces the amount of remaining exterior assembly work but does not eliminate the risks associated with the next spacewalk.

What to watch next

NASA plans to install the eighth and final roll-out array on the 3B power channel during a November 5 spacewalk. Watch for confirmation that the final unit is deployed, electrically connected and producing the expected output. Subsequent station power reports should clarify whether the combined system reaches its projected capacity under operating conditions. The milestone is also a useful reminder that sustaining a long-lived orbital laboratory involves ongoing upgrades rather than only new scientific instruments. Any delay to the final installation would change the completion schedule, not reverse the seventh array's successful deployment.

Reality check. NASA's October 29 completion report and the Times of India's independently dated October 30 account corroborate the crew, duration and seventh-array installation. The up-to-30-percent increase is NASA's projected benefit for all eight arrays, not a verified gain from this single spacewalk.
Sources and further reading

← Back to archive