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Related Experiment Videos

Protection to +12 Gz.

J W Burns1, D J Ivan, C H Stern

  • 1School of Aerospace Medicine, Brooks AFB, TX, USA.

Aviation, Space, and Environmental Medicine
|May 11, 2001
PubMed
Summary
This summary is machine-generated.

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New advanced anti-G suits and breathing systems provide pilots protection up to +12 Gz. The Advanced Technology Anti-G Suit (ATAGS) with COMBAT EDGE (CE) offers effortless protection to +9 Gz and higher with straining.

Area of Science:

  • Aerospace Medicine
  • Human Factors Engineering

Background:

  • U.S. Air Force developed advanced G-protective equipment for pilots.
  • COMBAT EDGE (CE) pressure breathing system is operational.
  • Advanced Technology Anti-G Suit (ATAGS) is under development.

Purpose of the Study:

  • Determine the upper Gz tolerance limits of protective equipment.
  • Evaluate the effectiveness of ATAGS and CE in high-G environments.
  • Assess the impact of seat-back angle on Gz tolerance.

Main Methods:

  • Six subjects were exposed to a matrix of Gz levels and protective equipment.
  • Tested standard anti-G suit (STD), STD with CE, ATAGS, and ATAGS with CE.
  • Seat-back angles of 13, 30, and 55 degrees were used.

Related Experiment Videos

  • Relaxed and straining Gz tolerance was measured using rapid onset runs to +12 Gz.

    • Main Results:

    • All subjects achieved +12 Gz with various equipment and straining levels.
    • Increased seat-back angle significantly improved relaxed Gz tolerance.
    • Protective equipment significantly affected Gz tolerance across all seat-back angles.

    Conclusions:

    • ATAGS/CE provides effortless protection to +9 Gz at 13/30 degrees and +10.5 Gz at 55 degrees.
    • +12 Gz is achievable with ATAGS/CE and moderate straining at 55 degrees.
    • With additional straining, +12 Gz is achievable at all tested seat-back angles with ATAGS/CE.