Boeing Starliner capsule poised for high-stakes flight




  • In Science
  • 2022-05-18 20:14:02Z
  • By CBS News

An Atlas 5 rocket carrying Boeing's Starliner crew capsule was mounted on its seaside launch stand Wednesday, setting the stage for blastoff Thursday on the company's third attempt to complete an unpiloted test flight to the International Space Station.

Software glitches spoiled the Starliner's debut test flight in December 2019, preventing an autonomous rendezvous and docking with the International Space Station, and corroded valves derailed a planned reflight last August.

But Boeing and NASA say they're finally ready for another try, and the United Launch Alliance Atlas 5 was rolled out of its processing facility and mounted atop pad 41 at the Cape Canaveral Space Force Station, clearing the way for takeoff at 6:54 p.m. Thursday. Forecasters predicted a 70% chance of good weather.

Boeing
Boeing's Starliner capsule, perched atop a United Launch Alliance Atlas 5 rocket, was hauled to the launch pad Wednesday, setting the stage for blastoff Thursday on a high-stakes test flight to the International Space Station.  

If all goes well, the unpiloted Starliner capsule will carry out a 24-hour rendezvous, guiding itself to a docking at the space station's forward port around 7:10 p.m. Friday. On board: about 500 pounds of crew supplies and equipment, along with an instrumented astronaut mannequin dubbed "Rosie the Rocketeer."

Asking about his confidence in Boeing and the Starliner's readiness for flight after a string of frustrating setbacks, astronaut Butch Wilmore, who has been in training to fly aboard a Starliner, said "we wouldn't be here right now if we weren't confident, confident that this would be a successful mission."

"There are always unknown unknowns, that's what historically has always gotten us, right? It's those things that we don't know about and we don't expect," he said. But given the exhaustive testing and analysis that's gone into correcting past problems with the Starliner, he said, "we're ready, the spacecraft is ready, these teams are ready."

The flight plan calls for the capsule to spend five days attached to the lab complex before returning to Earth for a parachute-assisted landing May 25 at White Sands, New Mexico. Assuming no major problems, Boeing and NASA hope to launch an astronaut crew to the station on a piloted test flight before the end of the year.

It's been a long time coming.

In 2014, NASA awarded Boeing a $4.2 billion contract to build the Starliner while SpaceX won a $2.6 billion contract to build Crew Dragon spacecraft. The goal was to re-establish U.S. human space flight capability in the wake of the space shuttle's 2011 retirement, ending NASA's sole reliance on Russia for astronaut ferry flights to the space station.

An artist
An artist's impression of a Boeing Starliner capsule moving in for docking at the International Space Station.  

Like Boeing, SpaceX carried out an unpiloted test flight of its Crew Dragon capsule in 2019 and went on to launch two astronauts to the space station in May 2020. Since then, the company has launched four operational NASA crew rotation flights to the ISS, one commercial visit to the outpost and a privately chartered flight to low-Earth orbit.

Highlighting a blistering launch pace, SpaceX launched a Falcon 9 rocket carrying 53 Starlink internet satellites from nearby pad 39A at the Kennedy Space Center Wednesday morning, a few hours before the Atlas 5 rollout. It was the company's 155th Falcon 9 flight, the 21st so far this year and the fourth this month alone.

SpaceX has helped NASA end its post-shuttle reliance on Russian Soyuz spacecraft for transportation to and from the space station. But agency managers are anxious for Boeing to begin operational crew rotation flights as soon as possible to provide assured access to space in the event problems that might temporarily ground either launch system.

"More is better, we can't have all of our eggs in one basket," veteran astronaut Mike Fincke, who's also trained to fly aboard a Starliner, said in an interview with CBS News.

"Something could go on with SpaceX, they could have a glitch with a Falcon 9, they're launching them all the time, and that could delay us ... getting back and forth to the International Space Station."

Having a second provider, he said, "gives us a robust capability so if one isn't working, we've got the other one."

A few hours before the Atlas 5 was rolled to its launch pad at the Cape Canaveral Space Force Station, SpaceX launched a Falcon 9 rocket from a nearby Kennedy Space Center pad, boosting 53 Starlink internet satellites into orbit.
A few hours before the Atlas 5 was rolled to its launch pad at the Cape Canaveral Space Force Station, SpaceX launched a Falcon 9 rocket from a nearby Kennedy Space Center pad, boosting 53 Starlink internet satellites into orbit.  

Steve Stich, manager of NASA's Commercial Crew Program, said the agency's long-term plan is one crew flight per year for Boeing and one for SpaceX.

"The plan is to have the (Starliner) orbit flight test and collect the data from that and review it, then we'll go move into the crewed flight test for Boeing," he said. "Once we do those two flight tests, we'll move into the final certification. And then at that point, we'll assign Starliner to the soonest post-certification mission that we can."

Despite a significantly larger contract and many decades of experience building space hardware, Boeing has had a surprisingly tough time getting the Starliner to the space station.

The capsule's initial test flight in 2019 was marred by software glitches, including one that prevented the spacecraft's flight computer from loading the correct launch time and trouble with radio reception that prevented flight controllers from quickly correcting the problem. Mis-timed thruster firings prevented rendezvous and docking with the space station.

Those problems and others were resolved after the capsule's return to Earth and Boeing geared up for a reflight last August, at its own expense, to put the fixes to the test. But at the last minute, engineers discovered valves in the capsule's propulsion system had jammed due to internal corrosion.

After attempting to troubleshoot at the pad, mission managers were forced to haul the Starliner back to its processing hangar for extensive inspections and analyses to pin down the cause of the corrosion and implement systems to prevent such problems in the future.

As it turned out, unexpected water intrusion in the valves, the presumed result of high humidity and stormy weather at the launch pad, triggered a chemical reaction with propellants that caused corrosion buildups, preventing multiple valves from working as required.

Company engineers are still assessing a possible redesign of the valves, but in the meantime gaseous nitrogen is flowing through the thruster pods to keep them dry, seals have been added to wiring to further isolate the hardware and the valves have been regularly opened and closed to verify performance.

"NASA's sure, Boeing's very confident that we're going to have a successful mission," Fincke told reporters. "If for some reason it wasn't, then we'll have to re-gather and go from there."

"But ... we have a great team that's really gone through this with a fine-tooth comb," Fincke said. "So we're looking forward to a good launch and a good docking to the International Space Station."

MoneyWatch: Is the U.S. heading for another recession?

Stunt couple lit on fire during wedding

DHS bulletin warns of violent threats related to abortion rights debate

COMMENTS

More Related News

NASA targets late August to early September launch for Artemis 1 Moon mission
NASA targets late August to early September launch for Artemis 1 Moon mission

NASA has set an aggressive launch for its Artemis 1 Moon mission following the successful June 20th "wet dress rehearsal" fueling test of the SLS rocket that will carry the flight to space.

Airbus sells 292 A320 aircraft to four Chinese airlines in a blow to Boeing, as US-China tension tips balance in European maker
Airbus sells 292 A320 aircraft to four Chinese airlines in a blow to Boeing, as US-China tension tips balance in European maker's favour

Airbus has secured a bulk order for 292 of its A320 single-aisle aircraft from four Chinese airlines, as deteriorating US-China relations tipped the balance ...

FCC clears SpaceX to put its Starlink satellite WiFi in vehicles
FCC clears SpaceX to put its Starlink satellite WiFi in vehicles

SpaceX's satellite internet service is officially going mobile after the Federal Communications Commission on Thursday authorized the company to provide its Starlink WiFi service to vehicles.

China
China's new Mars images show off the country's robust (but secretive) space program

With a $24 billion budget and dozens of active, high-profile missions, it's not surprising that NASA is the most visible of the dozens of government space agencies in the world. Just this week, the China National Space Administration (CNSA) released a series of high-resolution images of Mars taken by its Tianwen-1 spacecraft, which arrived at the Red Planet in February 2021 and has been orbiting it ever since. Over the course of more than 1,300 orbits, Tianwen-1 has photographed the entire planet in extreme detail, from the icy south pole to the 2,485-mile-long Valles Marineris canyon to the 59,055-foot-tall shield volcano Ascraeus Mons.

NASA calls
NASA calls 'mystery' rocket crash on moon highly unusual

NASA said a rocket of unknown national origin that crashed into the moon earlier this year produced a double crater on the surface, an unexpected feat. The...

Leave a Comment

Your email address will not be published. Required fields are marked with *

Cancel reply

Comments

Top News: Science