Produced by: Tarun Mishra Designed by: Manoj Kumar
The Boeing Starliner spacecraft, with astronauts Barry Wilmore and Sunita Williams, is stuck in space due technical issues since its June 5 launch.
The spacecraft has experienced five helium leaks, five manoeuvring thruster failures(4 resolved), and a propellant valve issue, necessitating extensive troubleshooting by the crew and mission control in Houston. NASA has postponed the astronauts’ return three times, with no fixed date yet. Initially planned as an eight-day mission, the return could now extend until July 6.
Starliner can remain docked at the ISS for up to 45 days, potentially extending to 72 days if necessary, providing a buffer for resolving technical issues.
If the helium leaks worsen, maintaining adequate pressure in the propellant tanks is a concern. However, current leaks are minor and within acceptable limits, with engineers closely monitoring the system. The spacecraft currently has 70 pounds of helium on board, while only 7 pounds are required for the return trip. Even with additional leaks, there is enough helium to maintain necessary pressurization for the return journey.
The Starliner has a high level of redundancy in its thruster system, with 28 RCS thrusters. Despite one complete thruster failure, engineers have successfully brought four malfunctioning thrusters back online, ensuring sufficient operational thrusters for safe undocking and de-orbit. A successful hot fire test has validated the operational status of the remaining thrusters. Even if more thrusters fail, there are still enough operational thrusters to safely undock and de-orbit the spacecraft.
Despite reassurances, public concern remains about potential additional failures. Engineers remain vigilant, monitoring the spacecraft’s systems to ensure the safety of the astronauts and the success of the mission.