Cerebral Blood Flow Based Computer Modeling of Gz-Induced Effects [supporting dataset]

Abstract of the final report is stated below for reference: There is continued interest in acceleration (G) effects in civil aviation, as G-induced loss of consciousness (G-LOC), impaired consciousness, and visual effects play a role in aerobatic, agricultural, and military aviation accidents. Methods: A software model (the Civil Aerospace Medical Institute G-Effects Model [CGEM]) based on physical and physiological variables related to inflight tissue resupply, using oxygen flow as a proxy for supply availability, was developed to evaluate risk of G-LOC and related phenomena in aeronauts. Aeronauts were modeled using several parameters, including sex, cardiovascular fitness, and other common modifiers such as G-suits, positive pressure breathing gear, anti-G straining and other muscle-tensing. The software was validated by comparison with experimental data from the peer-reviewed literature. Results: CGEM predicted physiological effects of Gz exposure accurately, particularly for rapid onset rates. Predicted times to G-LOC and absolute incapacitation periods were consistently within one standard deviation of pooled results obtained during centrifuge experiments using U.S. Navy (USN) and U.S. Air Force (USAF) pilots. Predictions of G tolerance based on visual effects onset also compared well with published data, as did evaluation of symptoms expected during a difficult aerobatic maneuver. Discussion: CGEM is a new tool for civil and military aviation. Rather than providing a simple G tolerance number, through proper selection of parameters flight surgeons, pilots, and accident investigators can gain insight into changes in risk from factors such fatigue, medications, dehydration, and anti-G countermeasures used.

• Record URL:
  https://doi.org/10.21949/1524446
• Dataset URL:
  https://doi.org/10.21949/1524439
• Dataset URL:
  https://rosap.ntl.bts.gov/view/dot/67315
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/66373
• Supplemental Notes:
  • The dataset supports report: Cerebral Blood Flow Based Computer Modeling of Gz-Induced Effects, available at the URL above. Alternate dataset title: CAMI-Gz-Effects-Model-CGEM.
• Corporate Authors:

  Federal Aviation Administration

  Civil Aerospace Medical Institute, P.O. Box 25082
  Oklahoma City, OK  United States  73125

  Federal Aviation Administration

  Office of Aerospace Medicine, 800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Copeland, Kyle
  • 0000-0002-8480-3614
  • Whinnery, James E
• Publication Date: 2023-3-22

Language

• English

Media Info

• Media Type: Dataset
• Edition: v1.0.1
• Dataset publisher:

  GitHub

  ,    

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Air pilots; Data; Gravitational force; Physiology; Risk assessment
• Subject Areas: Aviation; Data and Information Technology; Safety and Human Factors;

Filing Info

• Accession Number: 01883992
• Record Type: Publication
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: May 31 2023 10:16AM