\n <\/p>\n<\/section>\nLiftoff is targeted for 10:52 am (1452 GMT) from the Cape Canaveral Space Force Station in Florida, for a roughly one-week stay at the orbital laboratory.<\/p>\n
The last attempt, on Saturday, was dramatically aborted with less than four minutes left of the countdown as the ground launch computer went into an automatic hold.<\/p>\n
The problem was later traced to a faulty power supply source connected to the computer, with the malfunctioning unit since replaced.<\/p>\n
And a buzzy valve on the United Launch Alliance Atlas V rocket scuppered a previous attempt on May 6, a few hours before launch.<\/p>\n
In both cases, astronauts Butch Wilmore and Suni Williams were strapped in and ready to go, only to be forced to return to strict quarantine in their quarters.<\/p>\n
The Starliner program has already been beset by years of safety scares and delays, and a successful mission would offer Boeing a much-needed reprieve from the intense safety concerns surrounding its passenger jets.<\/p>\n
NASA meanwhile is looking to certify Boeing as a second commercial operator to ferry crews to the ISS\u2014something Elon Musk’s SpaceX has already been doing for the US space agency for four years.<\/p>\n
Embarrassing setbacks<\/h2>\n
Both companies received multibillion-dollar contracts in 2014 to develop their crew capsules, following the end of the Space Shuttle program that left the US temporarily reliant on Russian rockets for rides.<\/p>\n
Boeing, with its 100-year history, was heavily favored, but its program fell badly behind.<\/p>\n
Setbacks ranged from a software bug that put the spaceship on a bad trajectory on its first uncrewed test, to the discovery that the cabin was filled with flammable electrical tape after the second.<\/p>\n
While teams worked to replace the faulty rocket valve that postponed the previous launch attempt, a small helium leak located in one of Starliner’s thrusters came to light.<\/p>\n
Rather than replace the seal, which would require taking the spaceship apart in its factory, NASA and Boeing officials declared it safe enough to fly as is.<\/p>\n
When they do fly, Wilmore and Williams will be charged with putting Starliner through the wringer, including taking manual control of the spacecraft on its way to the ISS.<\/p>\n
During their stay on the research platform, the crew will carry out more tests, including simulating whether the ship can be used as a safe haven in the event of problems on the orbital outpost.<\/p>\n
After undocking, Starliner will re-enter the atmosphere and carry out a parachute and airbag-assisted landing in the western United States.<\/p>\n
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\n\t\t\t\t\t\t\t\t\t\t\t\tCitation<\/strong>:
\n\t\t\t\t\t\t\t\t\t\t\t\tTake three for Boeing Starliner crewed launch attempt (2024, June 5)
\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 5 June 2024
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