It ’s deja vu all over again . Boeing ’s long - anticipate Starliner mission has been postponed for a 2d sentence due to a newly discovered publication with the spacecraft ’s service faculty .
On Tuesday , Boeingannouncedthat liftoff for the first crewed test flight of its Starliner spacecraft is now targeted for May 21 at 4:43 p.m. ET . The society was originally targeting May 6 for the liftoff of Starliner on display board United Launch Alliance ’s ( ULA ) Atlas V rocket , but a last minute anomaly with one of the skyrocket ’s press valvesdelayed the crew test flight to May 17 . ULA ’s team successfully replaced the valve on Saturday , but now a new trouble has come up to push back the trajectory once again .
“ Starliner teams are working to resolve a pocket-size helium wetting detected in the spacecraft ’s serving module traced to a rim on a single chemical reaction control system thruster , ” Boeing wrote in a instruction . “ NASA and Boeing are developing ballistic capsule testing and functional solvent to address the issue . ”

The team at NASA’s Kennedy Space Center working to mate Starliner’s crew module with its service module in January 2023.Photo: NASA
The spacecraft consists of a recyclable crew condensation and an expendable service module . Helium is used in the ballistic capsule ’s pusher systems to allow for the thruster to fire without being combustible or toxic . To help purpose the issue , Boeing will test the spacecraft by pressurizing the propulsion scheme as it does before launching , and then let the helium system to vent by nature . delegacy teams will also bet over the datum of the last launching endeavor to track any other yield , according to Boeing .
Boeing ’s Crewed Flight Testis part of NASA ’s Commercial Crew Program and is meant to transmit crew and cargo to and from the International Space Station ( ISS ) under a$4.3 billioncontract with the space way . NASA ’s other commercial collaborator , SpaceX , just launched its eighth crowd to the space station .
This is the former in a drawing string of bad luck and failures that have marred the Starliner computer program since its inception about a decade ago . Starliner ’s first uncrewed test flight in 2019managed to reach space , but a software mechanisation glitch caused the ballistic capsule to incinerate excess fuel , preventing it from making it to the ISS .

The botched first trajectory propel NASA to call for a second test flight of the empty ballistic capsule before a work party ride on board . In May 2022 , Boeing completedthe Orbital Flight Test-2 ( OFT-2 ) , but OFT-2 suffer a few singultus , including thefailure of a pusher used for orbital maneuvering . Despite the underage anomaly , NASA decide to go onward with a crew test flight anyway .
Boeing ’s crew Starliner launch was initially go under for February 2023 , then postponed to late April , and finally reschedule for July 21 , 2023 . A few weeks before liftoff , however , the companionship announced that it wasstanding down from the launch attemptto address newfound issues with the crew fomite , include a statute mile ’s worth of flammable magnetic tape that had to be manually removed .
If we were n’t already nervous for the first launch attempt of Starliner ’s crewed flight , there are more than enough reason to make us worry at this item .

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