What is the state of unconsciousness lasting roughly 9 to 21 seconds called?

The state of unconsciousness lasting approximately 9 to 21 seconds is known as absolute incapacitation. This phenomenon occurs when an individual experiences a sudden loss of consciousness due to factors such as excessive G forces that surpass the physiological limits of the human body. During this time, the brain does not receive enough oxygen, leading to a temporary but complete loss of awareness and responsiveness.

Understanding this concept is crucial as it highlights the importance of monitoring G forces during flight and ensuring that pilots are adequately trained to handle such situations. This temporary incapacitation can occur quickly and has significant implications for safety and operation in high-performance aviation environments. The other terms mentioned, such as relative incapacitation and cumulative fatigue, refer to different aspects of human performance and limitations under stress, but they do not specifically describe the momentary loss of consciousness associated with intense G force exposure.