📷 Image Credits: Gizmodo
Boeing’s Starliner spacecraft has had its fair share of challenges during its recent mission to the International Space Station (ISS). After a slightly rocky docking at the ISS, two NASA astronauts were successfully delivered to the orbital lab. However, the crew capsule faced more complications as additional leaks were discovered in its service module. NASA is now closely evaluating the impact that five helium leaks may have on the remainder of the mission.
The recent update from NASA indicates that while the Starliner is docked, all the manifolds are closed as part of normal mission operations to prevent helium loss from the tanks. The spacecraft had already experienced three leaks, including a helium leak detected before liftoff, and two new leaks identified after launch. Despite these challenges, Boeing and NASA proceeded with the mission to the ISS without resolving the leaks.
The significance of helium in the spacecraft’s thruster systems cannot be understated. It allows the thrusters to function without posing any combustible or toxic risks. NASA’s Commercial Crew Program manager, Steve Stich, expressed confidence in being able to handle the leaks even if the leak rate were to increase substantially.
Although the leaks point towards potential issues with Starliner’s propulsion system, NASA remains optimistic about its commercial partner and downplays the anomalies. The spacecraft still has sufficient helium reserves to accommodate the return trip from the ISS. With only seven hours of free-flight time needed for a normal end of mission, Starliner currently has enough helium left in its tanks to support 70 hours of post-undocking activities.
The recent evaluation by engineers also highlighted concerns about an RCS oxidizer isolation valve in the service module that is not properly closed. This valve regulates the flow of oxidizer, crucial for fuel burning in thrusters. Mission managers are diligently working on the return plan, analyzing flight rationale, fault tolerance, and potential operational strategies for the rest of the flight.
As Starliner is scheduled to undock from the ISS no earlier than June 18, the spacecraft’s Crewed Flight Test remains under scrutiny as part of NASA’s Commercial Crew Program. Despite the setbacks, NASA and Boeing are working towards resolving the identified issues before approving the capsule for regular operations. Stay tuned for further updates on this mission by following us on HeadlineFly.com!
