Cape Canaveral (Florida):Two astronauts who should have been back on Earth weeks ago said Wednesday that they’re confident that Boeing’s space capsule can return them safely, despite a string of vexing breakdowns.
NASA test pilots Butch Wilmore and Sunita Williams launched aboard Boeing’s new Starliner capsule early last month, the first people to ride it. Helium leaks and thruster failures almost derailed their arrival at the International Space Station, and have kept them there much longer than planned. Now the earliest they could return may be the end of July, officials said.
In their first news conference from orbit, the pair said they expect to return once thruster testing is complete here on Earth. They said they’re not complaining about getting extra time in orbit, and are enjoying helping the station crew. Both have previously spent stints at the orbiting lab, which is also home to seven others.
“I have a real good feeling in my heart that the spacecraft will bring us home, no problem," Williams told reporters. The test flight should have lasted eight days, ending on June 14.
NASA's commercial crew program director Steve Stich said the earliest the Starliner astronauts might return is the end of July. The goal is to get them back before SpaceX delivers a fresh crew in mid-August, but that, too, could change, he noted.
This week, NASA and Boeing are trying to duplicate the Starliner's thruster problems on a brand new unit at White Sands Missile Range in New Mexico, one of the prime landing sites in the U.S. western desert. The trouble is in the propulsion system, used to maneuver the spacecraft.
Five thrusters failed as the capsule approached the space station on June 6, a day after liftoff. Four have since been reactivated. Wilmore said there should be enough working thrusters to get him and Williams out of orbit. There are also bigger engines that could fill in, if necessary.
“That mantra you’ve heard, failure is not an option, that’s why we are staying here now," Wilmore said. “We trust that the tests that we’re doing are the ones we need to do to get the right answers, to give us the data that we need to come back.”