
Boeing's Starliner Capsule Faces Critical Weekend Tests for Safe Return to Earth
Boeing's Starliner faces critical tests to ensure safe return for two-person crew after early mission problems extended the first piloted test flight.

Boeing's Starliner capsule faces critical tests this weekend to ensure the safe return of its two-person crew after experiencing early mission problems, with the mission's duration extended. NASA's Steve Stich disclosed the need for these tests and the potential impact on the return timeline.
During the Starliner's rendezvous with the International Space Station in early June, unexpected helium leaks and degraded maneuvering thrusters were discovered, prompting an in-depth analysis and testing period. As a result, the ship's initial piloted test flight, originally planned for a little over a week, has been prolonged to nearly two months.
The prolonged mission has seen Starliner commander Barry "Butch" Wilmore and co-pilot Sunita Williams adapting to the extended stay in orbit with resilience and positivity, according to NASA's Commercial Crew Program manager, Steve Stich.
Remaining Technical Hurdles
Two significant technical challenges persist, necessitating this weekend's tests: verifying the functionality of 27 maneuvering thrusters in the Starliner's service module through a "hot fire" process, and conducting parallel tests to confirm that the five known helium leaks in the propulsion pressurization system have not worsened. These tests are crucial to ensuring the spacecraft's ability to perform the required maneuvers for a safe re-entry and landing.
The "hot fire" process involves testing all 27 thrusters through a series of pulses to validate their performance and functionality before undocking. This is essential for the subsequent re-orientation of the Starliner and maintaining its stability during re-entry and landing. Additionally, thorough inspections of the helium system will be conducted to ensure its integrity and stability.
Flight Readiness Review and Safety Assurance
Assuming no major issues arise during the upcoming tests, a NASA flight readiness review will be convened to present the findings and analysis of the technical problems to senior management. This review aims to demonstrate a comprehensive understanding of the issues and to showcase the safety measures in place, providing the necessary assurance for the crew's safe return.
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