You find the following report about blackouts. “The acceleration that causes bla

Question

You find the following report about blackouts. “The acceleration that causes blackouts in fighter pilots is called the maximum g- force. Fighter pilots experience this force when accelerating or decelerating quickly. At high g’s, the piolet’s blood pressure changes and the flow of oxygen to the brain rapidly decreases. This happens because the pressure outside of the pilot’s body is so much greater than the pressure a human is normally accustomed to.” Indicate any incorrect physics (including the application of physics to biology) that you find

Explanation / Answer

If a force of 4 to 6 g is sustained for more than a few seconds, the resulting symptoms range from visual impairment to total blackout.

If a force form 4 to 6 G is sustained for more than a few seconds, the resulting symptoms range from visual impairment to total blackout.

As the g forces climb up toward 7 g's, you sink further still in the seat. You can no longer see color. Everything appears in black and white. An instant later, the passenger next to you disappears from view. Your field of vision is shrinking. It now looks like you are seeing things through a pipe. The front corner of the car disappears from view as your peripheral vision disappears. The visual pipe's diameter is getting smaller and smaller. You sink into the seat further still as the number of g's climb further. In a flash you see black. You have just "blacked out." You are unconscious until the number of g's are reduced and the blood returns to your brain.

PBG systems can overcome the blood-flow limitations of traditional (lower-body) G suits, allowing sustained G-tolerance at levels up to +7.5Gz with only minimal straining manoeuvres

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