PPRuNe Forums - View Single Post - ATAC Hunter F58 N337AX Crash - 20 Jun 2022
Old 26th Jun 2022, 14:31
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kenparry
 
Join Date: Feb 2003
Location: Brighton
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All single-seat Hunters were fitted with Mk2 or Mk3 seats, rated at 90kts/ground level. The 2-seaters all had the Mk4 seat, with the same ejection envelope. One major difference is the Mk4 uses a combined harness, where on the earlier seats there were separate harnesses for the parachute and the seat. Yes, all had the 80ft/sec cartridge gun, which is pretty much on the limit of what the human frame will tolerate, resulting in a spinal injury rate of around 30% for such seats. Not as bad as it sounds, as the vast majority of people have a full recovery and most regain their ejection seat rated medical category. Rocket seats are kinder to the body, not just because the gun has a lower velocity, but mainly because the rate at which the G is applied is significantly lower.
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