WALLOPS ISLAND, Va. — An Orbital ATK Antares rocket successfully launched a Cygnus cargo spacecraft packed with supplies and equipment for the International Space Station Nov. 12.
The Antares lifted off from Mid-Atlantic Regional Spaceport here at 7:19 a.m. Eastern, at the end of a five-minute window. The launch moved to the end of the window to provide additional time to confirm two approaching boats did not enter the restricted waters of the launch range. Controllers scrubbed a previous launch attempt Nov. 11 when an aircraft entered the range.
The Cygnus spacecraft separated from the Antares upper stage into its planned orbit, It is scheduled to arrive at the ISS early Nov. 14.
The Cygnus, on a mission called OA-8, is carrying more than 3,300 kilograms of cargo, including crew supplies, station hardware and scientific investigations. “We have Cygnus completely packed full of cargo on this mission,” said Dan Hartman, deputy ISS program manager at NASA, said at a pre-launch briefing Nov. 10.
Cygnus will remain at the station only a few weeks, with the arm unberthing the Cygnus, after filling it with cargo for disposal, on Dec. 3.
NASA will wait to release Cygnus for a day, however, using the spacecraft for tests of a docking system for future commercial crew vehicles. “We just want to get a little bit more characterization of our ISS GPS performance during that operation,” Hartman said.
Cygnus will then be released by the robotic arm on Dec. 4, the same day as SpaceX is scheduled to launch a Dragon cargo spacecraft to the ISS. Hartman said that while the station could accommodate both Cygnus and Dragon simultaneously, SpaceX’s previous analyses for its upcoming mission assumed Cygnus would not be there. “That’s primarily what’s driving” the early departure of Cygnus.
After leaving the station, but before its mission-ending destructive reentry, Cygnus will fly to a higher altitude and then deploy 14 cubesats mounted in dispensers on the exterior of the spacecraft’s service module. Those cubesats include eight Lemur satellites for Spire, a company that operate a constellation of ship-tracking and weather satellites, as well as technology demonstration cubesats for NASA and The Aerospace Corporation.
This mission is the fourth time that NanoRacks has flown cubesats in external dispensers on a Cygnus, said Henry Martin, mission manager at NanoRacks, at a Nov. 10 pre-launch briefing, but on previous flights weren’t able to fill all the dispensers. “It’s totally full” on this flight, he said.