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Boeing's Starliner spacecraft is undergoing an extended mission at the International Space Station (ISS), a significant development for its first-ever astronaut mission. Initially planned to last just over a week, Starliner’s stay in orbit is now anticipated to continue well beyond its original 45-day mission limit, according to recent NASA updates. This comes amidst ongoing analyses and testing prompted by technical issues encountered shortly before and during its docking at the ISS. Starliner launched on June 5, 2024, marking a pivotal moment for Boeing and NASA. This mission, known as the Crew Flight Test (CFT), is Starliner’s first manned mission following two prior uncrewed flights. It carries NASA astronauts Butch Wilmore and Suni Williams, both seasoned test pilots with extensive experience in evaluating new spacecraft systems. The capsule successfully docked with the ISS on June 6, despite initial challenges that necessitated a brief delay and reattempt. These difficulties were primarily associated with the Reaction Control System (RCS) thrusters, where several malfunctioned during the docking process. Furthermore, helium leaks were detected within the capsule, adding to the complications faced by the crew and ground control teams. Efforts to identify and resolve the issues with Starliner’s RCS thrusters are continuing. You know, the spacecraft has 28 thrusters in total, with five showing inconsistent behavior during the docking phase. As of the latest updates, only one thruster will be taken offline for the spacecraft's eventual return to Earth. This comprehensive evaluation of the thrusters includes ground testing, which commenced on July 3 at NASA’s White Sands Test Facility in New Mexico. These tests aim to replicate the conditions experienced by the thrusters from launch through docking and, later, from undocking to landing. The ground testing is a crucial step to understand the thruster anomalies and ensure the reliability of Starliner for future missions. One of the significant factors enabling the mission extension is the performance of Starliner’s batteries. Initially, NASA had set a 45-day limit for the mission, constrained by the crew module batteries. However, recent assessments have shown that the batteries are performing well, allowing for a potential doubling of the mission duration. Steve Stich, manager of NASA's Commercial Crew Program, explained that the batteries are being recharged by the station, and their performance has not degraded. This development opens the possibility of Starliner remaining docked for up to 90 days or even more, providing ample time for thorough testing and analyses.
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