NASA to redesign Orion capsule despite safe Artemis II reentry
▼ Summary
– NASA canceled a planned manual piloting demonstration of the Orion spacecraft to conduct an additional test on its propulsion system.
– This test aimed to gather data on a small internal helium leak in the system that pressurizes the spacecraft’s oxidizer.
– The leak is located in the valves of the European-built service module, which will be discarded before atmospheric reentry.
– Despite the leak, the propulsion system has performed normally for all maneuvers during the Artemis II mission.
– The mission is on track for the Orion crew module to splash down in the Pacific Ocean with its four astronauts.
While the Artemis II mission has largely proceeded according to plan since its April 1 launch, NASA controllers made a significant schedule adjustment this week. As the crew of four astronauts sped homeward following their lunar flyby, a planned manual piloting demonstration was canceled. This decision was made to prioritize gathering data on a small helium leak within the spacecraft’s propulsion system.
The leak is located in the helium pressure supply on the oxidizer side of the system. This inert gas is used to push propellant through the network of tanks and pipes that feed the Orion spacecraft’s main engine and thrusters. According to Jeff Radigan, NASA’s lead flight director for Artemis II, the issue is not a leak into the vacuum of space. Instead, it is an internal leak across some valves within the European-built service module. Mission managers needed to characterize the leak to determine what future modifications might be necessary.
Importantly, the propulsion system performance has remained nominal throughout the mission, with all engine burns executing as expected. The leak has not impacted the spacecraft’s ability to maneuver. The crew, consisting of astronauts Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen, remains on track for a safe splashdown in the Pacific Ocean. The service module housing the valves will be jettisoned just before atmospheric reentry and will burn up, while the Orion crew capsule, named Integrity, returns the astronauts to Earth.
This proactive data collection underscores NASA’s meticulous approach to mission safety and future design. Even with a successful return imminent, engineers are focused on understanding every system’s behavior to inform the design and operation of subsequent Artemis missions.
(Source: Ars Technica)
