SpaceX is ‘go’ to launch astronauts to space station on Halloween
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SpaceX is “go” to launch its spooky space station mission this weekend — as long as a toilet issue gets cleared up in time.
No showstoppers were found during a flight readiness review (FRR) for the company’s Crew-3 mission, which will send four astronauts to the International Space Station (ISS) aboard a SpaceX Crew Dragon capsule. Crew-3 therefore remains on track to lift off early on Halloween morning (Oct. 31), NASA and SpaceX announced Monday (Oct. 25).
“We had a good review today,” Joel Montalbano, NASA’s ISS program manager, said during a news conference Monday evening after the FRR wrapped up.
Live updates: SpaceX’s Crew-3 mission to the space station for NASA
The review revealed no surprises, Montalbano said. But that doesn’t mean the NASA and SpaceX teams aren’t working on any issues. Indeed, they need to resolve one outstanding item before Crew-3 can lift off — a slight redesign of Crew Dragon’s toilet system.
That tweak was prompted by an issue experienced on SpaceX’s Inspiration4 mission, which sent four private citizens on a three-day trip to orbit last month. After that capsule, named Resilience, returned home, inspections revealed that a tube hooked up to a toilet storage tank had popped loose during flight.
This “allowed urine to not go into the storage tank but, essentially, to go into the fan system,” Bill Gerstenmaier, vice president of build and flight reliability at SpaceX, said during Monday’s news conference. But the leak didn’t markedly affect Inspiration4, he added.
“We didn’t really even notice it; the crew didn’t notice it until we got back” to Earth, Gerstenmaier said.
Still, SpaceX decided to revamp the toilet system on the Crew-3 capsule, known as Endurance, going with an all-welded structure to eliminate tube pop-offs, Gerstenmaier said. NASA needs to give the redesign a final thumbs-up before Crew-3 can fly, but that is expected to happen in the coming days.
The toilet issue could potentially apply to another Crew Dragon: the capsule known as Endeavour, which flew SpaceX’s Crew-2 mission and is still docked to the ISS. Endeavour is scheduled to come back to Earth with the four Crew-2 astronauts soon — on Nov. 4, if Crew-3 launches on time.
Astronauts on the orbiting lab have examined Endeavour, looking for signs of corrosion caused by leaked urine (or rather, by an additive that SpaceX puts into the Crew Dragon septic system to remove ammonia from urine). They haven’t found anything troublesome, and analyses by teams here on Earth indicate that all should be well for Crew-2’s return, Gerstenmaier said.
He also noted that leakage on Crew-2 was likely significantly lower than on Inspiration4, given that crewmembers used Endeavour’s toilet only during its 24-hour trip to the space station rather than for three full days.
Crew-3 is scheduled to launch atop a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida at 2:21 a.m. EDT (0621 GMT) on Sunday. You can watch the liftoff live here at Space.com courtesy of NASA, or directly via the space agency.
The mission will send four spaceflyers to the orbiting lab for a six-month stay: NASA astronauts Raja Chari (mission commander), Tom Marshburn and Kayla Barron, along with the European Space Agency’s Matthias Maurer. All are spaceflight rookies except Marshburn, who has two visits to the station under his belt.
Crew-3 will mark Endurance’s spaceflight debut. The capsule will arrive at the ISS just after midnight on Monday (Nov. 1), if the mission launches on time and all goes according to plan.
Mike Wall is the author of “Out There” (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook.
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