G-induced loss of consciousness (abbreviated G-LOC) is a term generally used in aerospace physiology to describe what happens when excessive and prolonged G-forces (gravitational acceleration) pull blood away from the brain, causing cerebral hypoxia.
The condition is most likely to affect pilots of high-performance fighter jets and aerobatic aircraft or astronauts, but is possible in some extreme amusement park rides. G-LOC incidents have caused fatal crashes in high-performance aircraft capable of sustaining high g for extended periods.
High-G training for airline or spacecraft pilots often includes ground training for G-LOC in special centrifuges, with some profiles exposing pilots to 9 G for an extended period of time.
However, only a few fighter pilots have experienced G-LOC incidents. But what happens when a fighter pilot overloads his airframe? Please watch the video below.
