Orion helium leak no threat to Artemis II reentry, but will require redesign
Ars Technica • • science
Key Points:
- NASA's Artemis II mission has proceeded smoothly despite a helium gas leak in the Orion spacecraft's propulsion system, leading to the cancellation of a manual piloting demonstration to focus on testing the leak.
- The helium leak is internal to the European-built service module's valves and has not impacted propulsion performance or the mission's trajectory, with the spacecraft consuming only 40% of its fuel nearly 80% through the mission.
- The service module, which houses the leaky valves, will be jettisoned and burn up upon reentry, while the crew module, with independent thrusters, will safely return astronauts to Earth.
- NASA plans to redesign the helium valves for future missions, particularly Artemis IV, which will require fully reliable propulsion for lunar orbit operations; Artemis III will fly closer to Earth and test commercial lunar landers.
- Valve issues are common in spaceflight, and NASA is confident the redesign will be manageable and not as critical as previous challenges like the Artemis I heat shield anomaly.
