DOI QR코드

DOI QR Code

Factors Affecting the Recovery of Pilots +Gz Tolerance

  • Park, Myunghwan (Republic of Korea Air Force Academy, Department of Computer & Information Science) ;
  • Jee, Cheolkyu (Agency for Defense Development, The 7th R&D Institute-2) ;
  • Kim, Cheonyoung (Agency for Defense Development, The 7th R&D Institute-2) ;
  • Seol, Hyeonju (Chungnam National University, School of Integrated National Security)
  • 투고 : 2017.08.31
  • 심사 : 2017.10.12
  • 발행 : 2017.10.31

초록

Objective: This study was designed to identify factors affecting pilots' +Gz tolerance recovery from +Gz induced exhaustion. Background: +Gz tolerance of pilots has been considered as a crucial factor to fly the modern high performance fighter aircrafts. However, the factors affecting pilots' G-tolerance recovery from +Gz induced exhaustion have not been examined in the acceleration research community. Method: A centrifuge profile consisting of a high +Gz run for pilot's exhaustion and a low +Gz run for pilot's recovery and another high +Gz runs for pilot's second exhaustion was designed. The subjects' +Gz tolerance recovery ratio was measured by ratio of second high +Gz run time to the first high +Gz run time. The subjects' +Gz tolerance recovery rate was measured by dividing the subjects' +Gz tolerance recovery ratio by the low +Gz run time. The subjects' G-tolerance recovery rate was analyzed with respect to the subjects' personal factors including subjects' anthropometric and physiologic characteristics, flight time, flying aircraft type and so on. Results: The subjects' previous three-month flight hours (r=-0.336, p=0.039), six-month flight hours (r=-0.403, p=0.012) and one-year flight hours (r=-0.329, p= 0.044) correlated with the subjects' G-tolerance recovery rate. Conclusion: The subjects' G-tolerance recovery rate is clearly related to the subjects' previous flight hours. However, the subjects' anthropometric and physiologic characteristics do not show any statistically significant correlation with the subjects' G-tolerance recovery rate. Application: This research provides a safety critical insight to aviation community by identifying the factors to affect the gravity-induced loss of consciousness (GLOC) of pilots.

키워드

참고문헌

  1. Balldin, U.I., Werchan, P.M., French, J. and Self, B., Endurance and performance during multiple intense high +Gz exposures with effective anti-G protection. Aviation Space Environmental Medicine, 74(4), 303-308, 2003.
  2. Burton, R.R., Leverett, S.D. and Michaelson, E.D., Man at high sustained +Gz acceleration. Aviation Space Environment Medicine, 45(10), 1115-1136, 1974.
  3. Burton, R.R., A conceptual model for predicting pilot group G tolerance for tactical fighter aircraft. Aviation Space Environment Medicine, 57, 733-744, 1986.
  4. Burton, R.R., Human Physiological Limitations to G in High-Performance Aircraft. In Physiological Function in Special Environments (pp. 123-137), Springer New York, 1989.
  5. Epperson, W.L., Burton, R.R. and Bernauer, E.M., The influence of differential physical conditioning regimens on simulated aerial combat maneuvering tolerance. Aviation Space Environment Medicine, 53(11), 1091-1097, 1982.
  6. Epperson, W.L., Burton, R.R. and Bernauer, E.M., The effectiveness of specific weight training regimens on simulated aerial combat maneuvering tolerance. Aviation Space Environment Medicine, 56(6), 534-539, 1985.
  7. Forster, E.M., Shender, B.S. and Forster, E.C., The effect of aircrew age on +gz tolerance as measured in a human-use centrifuge. Naval Air Warfare Center Aircraft Div Patuxent River MD Crew Systems Technology Dept, 2000.
  8. Gillingham, K.K. and Fosdick, J.P., High-g training for fighter aircrew. Aviation Space Environment Medicine, 59(1), 12-19, 1988.
  9. Hrebien, L. and Hendler, E., Factors affecting human tolerance to sustained acceleration (No. NADC-84021-60). Naval Air Development Center WARMINSTERPA Aircraft and Crew Systems Technology Directorate, 1983.
  10. Ling, C.H., Craen, A.J., Slagboom, P.E., Gunn, D.A., Stokkel, M.P., Westendorp, R.G. and Maier, A.B., Accuracy of direct segmental multi-frequency bioimpedance analysis in the assessment of total body and segmental body composition in middle-aged adult population. Clinical Nutrition, 30(5), 610-615, 2011. https://doi.org/10.1016/j.clnu.2011.04.001
  11. Miller, H., Riley, M.B., Bondurant, S. and Hiatt, E.P., The duration of tolerance to positive acceleration. Aerospace and Medicine, 30, 360-366, 1959.
  12. Park, M., Yoo, S., Seol, H., Kim, C. and Hong, Y., Unpredictability of fighter pilots' G duration tolerance by anthropometric and physiological characteristic. Aerospace Medicine and Human Performance, 86(4), 397-401, 2015. https://doi.org/10.3357/AMHP.4032.2015
  13. Stoll, A.M., Human tolerance to positive G as determined by the physiological end point. Aerospace and Medicine, 27, 356-67, 1956.
  14. Swetleena. A study of the relationship between physical fitness and +gz tolerance among young healthy Indian women. MD thesis. Rajiv Gandhi University of Health Sciences, Bangalore, India, 2009.
  15. Tesch, P.A., Hjort, H. and Balldin, U.I., Effects of strength training on g tolerance. Aviation Space Environment Medicine, 54(8), 691-695, 1983.
  16. Tong, A., Balldin, U.I., Hill, R.C. and Dooley, J.W., Improved Anti-G protection boosts sortie generation ability. Aviation Space Environment Medicine, 69(2), 117-120, 1998.
  17. Webb, J.T., Oakley, C.J. and Meeker, L.J., Unpredictability of fighter pilot g tolerance using anthropometric and physiologic variables. Aviation Space Environment Medicine, 62(2), 128-135, 1991.