WORLDTECHNASA Schedules Two Spacewalks to Add Final ISS Solar Arrays
NASA is preparing two spacewalks to install the last two roll-out solar arrays on the International Space Station, which are expected to lift the station's available electrical power by up to 30%. According to eeNews Europe, the project shows how a spacecraft already in orbit can gain power without replacing its entire electrical power system.
Two spacewalks set for late autumn
According to eeNews Europe, the first spacewalk, designated U.S. spacewalk 100, is scheduled for Thursday, October 29. A second, U.S. spacewalk 101, is planned for Thursday, November 5. Together, the two operations are meant to complete the station's planned solar power augmentation.
The first of the new arrays is to be connected to the station's 2A electrical power channel, where it will add generating capacity to the power system already in place.
Power gain and what it supports
The upgrades are intended to make more electricity available from the station's existing power infrastructure. The report says they will raise the station's power generation capacity from 160 kilowatts, by up to 30%.
The ISS relies on solar energy to run its scientific equipment, life support systems and other onboard operations. The additional electricity will also support preparations for the station's eventual safe and controlled deorbit.
A model for upgrading spacecraft in orbit
The eeNews Europe report presents the project as an example of how deployable solar technology can increase the power generation of a spacecraft already in service, and how electrical infrastructure can be upgraded while in orbit.
Open questions
- Will both spacewalks take place on the dates currently scheduled?
- Will the new arrays deliver the full 30% increase once connected?