Could the difference between mission success and failure come down to how well an astronaut can endure the crushing forces of launch and re‑entry? At Wright‑Patterson Air Force Base, the Air Force Research Laboratory’s 711th Human Performance Wing (711 HPW) is answering that question with precision engineering and decades of aerospace physiology expertise. Their human‑rated centrifuge-the only one in the Department of Defense-is giving astronauts from NASA, the Canadian Space Agency, and the European Space Agency a ground‑based experience mimicking the intense g-forces of spaceflight.
Capable of generating up to 9 g’s, the centrifuge allows trainees to feel nine times the normal force of gravity, replicating the acceleration profiles of actual spacecraft. Unlike the vertical G‑loads faced by fighter pilots, astronauts experience forces along the chest‑to‑back x‑axis, which can make even simple cockpit tasks physically demanding. “They have to still be able to reach forward and accomplish certain tasks on their control panels,” explained Jason Eckerle, acting section chief of the Aerospace Physiology Section in AFRL’s Human Effectiveness Directorate.
The training profiles are not generic simulations. Engineers incorporate real sensor data taken during early missions to develop highly accurate acceleration curves for launch, atmospheric re‑entry, and emergency aborts. “We take the different forces that they are experiencing, and we create this simulated profile that mimics as close as we can in our centrifuge what they are going to experience,” said Nathan Dillon, senior aerospace engineer at the directorate. By taking this data-driven approach, astronauts rehearse under conditions nearly indistinguishable from the real event.
This physiological preparation is very important for ESA’s space medicine team. “The g‑forces that our astronauts will experience during liftoff and re‑entry have a real impact on their entire body,” noted Sergi Vaquer Araujo. “It is extremely important for us to ensure their ability to sustain these forces by getting used to it to limit the risks of dizziness or even loss of consciousness.” Such risks are well‑documented in aerospace physiology research, where rapid‑onset acceleration can lead to G‑induced loss of consciousness, or its subtler counterpart, almost‑loss of consciousness, both of which impair cognitive and motor performance.
The centrifuge’s versatility is due to its modular gondola design, originally adapted for NASA in 2018 by engineers from both organizations when they worked together installing spacecraft‑specific cockpit displays. This enables very quick reconfiguration between fast‑jet pilot training and astronauts’ mission profiles. The facility now provides support for about 1,100 trainees every year, including aircrew, flight surgeons, aerospace physiologists, and astronauts.
International collaboration is central to the program’s success. While NASA and ESA astronauts have long trained in Bremen, this recent session marked the first time a CSA astronaut would use the centrifuge – Joshua Kutryk. In addition to Kutryk, NASA’s Jack Hathaway and Jessica Meir, and ESA’s Raphaël Liégeois and Sophie Adenot were training as part of missions that include the first flights of both Adenot and Liégeois, scheduled for 2026 to the International Space Station.
Feedback from astronauts who later launched has reinforced the centrifuge’s operational value. “We’ve gotten feedback from previous astronauts who have actually launched that the centrifuge is a fairly realistic experience and helped them prepare for their actual mission,”Dillon said. That realism is not only in terms of physical strain but also in the cognitive demands of operating spacecraft systems under acceleration-a focus it shares with military high‑G training programs worldwide, where pilots need to maintain situational awareness while executing precision maneuvers under extreme loads.
More than just training execution, the role of the Human Effectiveness Directorate combines science and technology development with medical research, consultation, and aircrew health assessment expertise from the U.S. Air Force School of Aerospace Medicine under one roof at 711 HPW. The synergy ensures that personnel-whether in the cockpit of a fighter or the capsule of a spacecraft-can perform at peak performance when it really matters, assisting both operationally ready forces and advancing aerospace human factors engineering.
Brig. Gen. Robert K. Bogart summed up the scope of the mission: “Our centrifuge provides a unique and valuable training environment, leveraging our expertise in human performance to ensure the safety and readiness of astronauts facing the extreme forces of spaceflight. This collaboration exemplifies our commitment to advancing human potential in challenging environments, whether in the air or in space.”