![]() During their training, astronaut and flight crew students receive classroom instruction as well as realistic, hands-on training in the company-operated centrifuge. KBRwyle instructors teach students about the physiological effects of acceleration and countermeasures used in a high-G environment. KBRwyle provides all personnel, resources, facilities and maintenance for centrifuge-based training, and conducts all required inspections to ensure safe operations. While the centrifuge is capable of generating up to 30 Gs, typically the fast-jet community will experience 7 to 9 Gs, while astronauts will usually experience around 3 Gs, and up to 8 Gs in simulating an emergency reentry. In training, astronauts and flight crews experience G forces similar to what they experience when riding in their respective vehicles. These volunteers stay current by coming to the centrifuge a few times each month to practice and improve their technique and stay "G fit." Similar training is also conducted for a panel of approximately 30 volunteer test subjects who represent fast-jet aircrew in research and development of equipment and procedures used in fast-jet operations. Marine Corps and allied fast-jet aircrew annually. KBRwyle provides centrifuge-based flight environment training for hundreds of U.S. Navy Blue Angels aerial demonstration team and several commercial-flight individuals who paid a visit to the International Space Station. These include all of the Space Shuttle astronauts since 1988 the U.S. The KBRwyle-operated centrifuge has been the site of acceleration training for many well-known legends in the field of space travel and fast-jet aircrews. The centrifuge simulates gravitational forces (G-forces) that these individuals experience in their flying environment. For more than 50 years, KBRwyle has operated and maintained the Brooks centrifuge in San Antonio, Texas – a human-rated centrifuge where fast-jet pilots and astronauts, such as Glenn, come to train. We conclude that high-G training is well-tolerated by fighter aircrew and is a highly appropriate method for minimizing the potential for aircraft mishaps due to G-LOC in flight.Before Senator John Glenn became the oldest astronaut in space, the 77-year old trained for the gravitational forces he would endure during launch with KBRwyle. Critiques provided by 382 trainees revealed 73% enthusiastic or positive assessments of the training, as opposed to only 2% negative or hostile responses. ![]() Motion sickness was a significant problem in less than 1% of the trainees. G-induced loss of consciousness (G-LOC) occurred in 9% of the trainees, most commonly on the GOR, less often on the 9-G RORs. All but two of the trainees completed the 8-G, 15-s rapid-onset run (ROR) with anti-G suit inflated 94% completed the 9-G, 15-s ROR and 93% were able to tolerate the 9-G, 10-s ROR while looking back over their left shoulder. The trainees' mean relaxed and straining G tolerances on the gradual-onset run (GOR) without anti-G suit inflation were 5.2 and 8.3 G, respectively and 41% of the trainees reached the 9.0-G run limit. ![]() Exposure to G stress on the USAFSAM centrifuge allowed the trainees to determine their G tolerances and to perfect and practice their AGSM. The didactics centered on discussion of the G-time tolerance curve and demonstration of an effective anti-G straining maneuver (AGSM). From 8 Jan 85 through 12 Feb 86, 741 USAF fighter aircrew from Tactical Air Command underwent high-G training at the USAF School of Aerospace Medicine, the major objectives of the training being to increase their understanding of G stress and G protection and to raise their G tolerance.
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