Summary
Highlights
Lakisha Hawkins provides an update on flight day eight, noting the mission is progressing well as the crew prepares for Earth return. She highlights the scientific activities conducted, including lunar science and human health experiments to understand the deep space environment's impact on astronauts, crucial for future Mars missions. The mobile launcher is in good condition, and initial data from the SLS team shows excellent performance. Lessons learned, such as water valve operations and radiation shielding adjustments, are being addressed for future Artemis missions.
Rick Henfling details recent activities, including a return trajectory correction maneuver and the crew's practice with orthostatic intolerance garments. He discusses successful 4K video streaming via the optical communication system and upcoming manual piloting demonstrations to test spacecraft maneuverability and power generation. The radiation shelter demonstration has been modified to focus on providing proper ventilation within the confined space.
Rick outlines the critical events leading up to entry, including crew module and service module separation, a final trajectory correction burn, and roll maneuvers for separation. He describes the re-entry process, including the communication blackout period, deployment of drogue and main parachutes, and the eventual splashdown in the Pacific Ocean off the coast of California. He also provides the expected G-forces for nominal and contingency landings.
Debbie Korth confirms Orion's systems are operating nominally and healthy. She shares imagery from an inbound external inspection of the crew and service modules, confirming their excellent condition. New tests are being conducted, such as fastener removal in pressurized cabins and thermal responsiveness experiments, to expand the operating envelope for future missions. She reports fuel consumption, the number of commands uplinked, and a significant amount of data downloaded via the optical communication system.
Lilly Villarreal, aboard the USS John P. Murtha, details the recovery plan. Divers will assess the capsule's surroundings, open the hatch, and assist astronauts onto an inflatable raft. The crew will then be picked up by Navy helicopters and transported to the ship's medical bay for checkups, aiming for extraction within two hours of splashdown. The Orion capsule will be towed into the ship's well deck, and the crew will fly back to shore within 12 to 24 hours. She thanks the US military for their support in these efforts.
Rick explains contingency trajectories for landing, which could result in higher G-forces (up to 7.5 G's) depending on the severity of issues. Regarding the radiation sheltering test, it was modified to focus on critical airflow in zero gravity, which is crucial for preventing CO2 buildup. The crew is still receiving radiation data through other experiments and tissue chips.
Debbie addresses questions about external imagery, clarifying that the inspections focused on the backshells of the crew module, which showed no concerns. She explains that in the unlikely event of heat shield damage, flight profiles could be modified, but hardware repairs in space are not possible.
Rick states the predicted max velocity for Artemis II re-entry is 34,965 feet per second, less than the Apollo 10 record. Debbie discusses the recovery of parachutes, noting that while visual inspection is valuable, certification is based on extensive ground testing. More air assets are being used to capture imagery of parachute deployment for additional data.
Rick outlines the primary difference in re-entry between Artemis I and II: a shortened entry range for Artemis II due to heat shield certification. He describes the cockpit environment during re-entry as focused and professional, with the crew (pilots and non-pilots) monitoring spacecraft performance without needing active inputs unless an off-nominal scenario arises. The deep space network has performed exceptionally well throughout the mission, facilitating communication.
Speakers clarify that no major lessons from the mission have altered the re-entry plan significantly, as the spacecraft has performed well. Minor issues like the water valve and wastewater venting are being addressed with planned tests and ground modifications upon return, but do not pose risks to re-entry. The crew will be comfortably suited during re-entry regardless of cabin temperature.