NASA, Boeing OK Starliner launch from Cape Canaveral
A new crew-worthy spacecraft could be docking with the International Space Station in just over a week as NASA and Boeing gave the CST-100 Starliner the OK to launch from the Space Coast.
In a flight readiness review, teams signed off on sending the Commercial Crew Program capsule on its redo attempt to dock with the ISS targeting a liftoff on at 6:54 p.m. EDT Thursday atop a United Launch Alliance Atlas V rocket from Cape Canaveral Space Force Station’s Space Launch Complex-41.
“The point of this demonstration is to make sure that we’re buying down risks and thoroughly testing out the system before we go put crew on the next vehicle,” said NASA’s Kathryn Lueders, associate administrator for the Space Operations Mission Directorate.
NASA officials will reconvene on Tuesday, and if weather cooperates, the rocket and spacecraft are slated to roll to the pad on Wednesday.
The Orbital Flight Test-2 looks to get Boeing back in the game to join SpaceX and its Crew Dragon as vehicles capable of launching astronauts from U.S. soil to the station. The first OFT took off in December 2019, and made it to orbit and back to Earth, but missed its goal of hooking up with the space station because of a series of software and other issues that at the time NASA labeled as a “high visibility close call.”
That misstep led to a recommendation of 80 changes that spanned hardware, software and operations, all of which had been addressed ahead of an attempt to launch OFT-2 last August. But that attempt went awry when a new issue popped up — valves getting stuck in the wrong position on the service module propulsion system.
Despite efforts to fix the valves on the launch pad, Boeing was forced to roll Starliner back to its factory at Kennedy Space Center, after which it spent months diagnosing the culprit — corrosion caused by excess moisture that led to the sticky valves.
Despite the valves having worked fine on both the previous OFT launch as well as other tests, Boeing opted to just switch out service modules and introduce some workarounds to mitigate the chance of it happening again.
Now eight months since the last attempt, Starliner looks to finally get its uncrewed flight off the ground again. The goal is to dock with the space station one day after launch on May 20 to demonstrate its ability to safely transport humans to and from the station.
Parts of the OFT-2 mission that were not able to be performed the first time around include the docking and undocking with the ISS using a neverbefore-used rendezvous sensor package. Mission managers will also be able to monitor the emergency abort system on launch, something that was not in place for OFT-1.
Teams will once again see how the vehicle’s thermal shield holds up, how the atmosphere is exchanged while docked with the ISS and make sure that ISS crew can synch data with Starliner.
The capsule is basically ready to fly with humans but is still bringing along stand-in mannequin named Rosie the Rocketeer.
It will stay docked for five days or more before returning to Earth for a ground landing in the western U.S., unlike SpaceX’s water landings off the Florida coast in its Crew Dragons.
If successful, a crewed test launch could happen before the end of the year paving the way for regular contracted service flights to the station.
“We will learn a lot I think on this test flight,” said NASA’s Commercial Crew Program manager Steve Stich. “Really the only way to get the final piece of data you need to fly crew is to go fly the vehicle in an environment that includes flying during the ascent on orbit and then docking in proximity to ISS, and we’re about to go do that.”