Curious about g-forces and the human body.
Using a fighter jet for example (pick your fave) I know on take off from a carrier or anywhere else for that matter that your body takes on some major "G's" and the same when making some extreme manuvers.
But the Question is when at a crusing speed (doesn't matter) take mach 1 for example how does the body react to the g-forces?
Does it "adapt" or are the forces constinly affecting the body in some way?
Your body can adjust to temperature, loud noise, and even atmosphereic pressure, but what about sustained g-forces?
Sorry about a odd and matbe cunfusing question, but i'm curious. And since my chances of ever flying in a F16 are slim to none I'll never be able to experiance it.

if you fly at a constant speed, your acceleration is zero, so according to Newton: F=m.a (force=mass x acceleration). when your a=0, F=0 so no forces. i just came up with this myself, but do you think it's acceptable? no force, no extra G's...

hagar, schumi lost to the typhoon 2 out of 3 times.
i'd imagine the feeling of acceleration is like what ya feel in a standard comercial plane, when ya start out ya get pushed into your seat, but once your airborne and speed up, you dont really feel it

i see:)
my bad, i really should spend extra time interpreting these things better when tired:)

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But what about the effects on the brain? How is damage prevented there?
If I start sounding like a three year old child let me know and I'll stop!

How about in a 747? How powerful are those in that aircraft?

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Really? Even in something like a fighter jet?

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Although this was a long time ago I had a flight in a RAF Hunter advanced trainer (simply a 2-seat version of the front-line jet fighter) & broke the "sound barrier" twice in an almost vertical dive from 43,000 feet. I wore an anti-G suit which was far more painful than the G effects. Despite doing some reasonably high-G manoeuvres these were done quite smoothly with no violence involved.

Earlier this year I was fortunate enough to have an advanced aerobatic lesson in the Extra I use as my avatar. Although this is a very slow aircraft compared with the Hunter or a modern jet fighter it is far more lively & manoeuvrable. The instructor, himself an ex-member of the RAF Red Arrows, told me it will roll faster than the BAe Hawk (400 degrees per second) & is stressed to something like 26 G, both positive & negative. He assured me that I would break myself long before damaging the aircraft. I could be wrong but seem to recall that aeobatic display pilots regulary cope with + or - 9 G. We had no anti-G suits but I was taught a simple exercise to delay the onset of blackouts due to positive G. I was delighted & even my instructor was impressed when I withstood +5 G (the maximum allowed for my first lesson) with no ill-effects. I have a certificate to prove it. Not bad for an old codger the wrong side of 60.

PS. As for roller-coasters, I read they can often pull up to +6G.

PPS. I checked my facts. http://www.geocities.com/cedarpoint6/forces

PPPS. This is the Hawker Hunter T.7. Very much like the one I had that ride in back in 1959. I can still remember every precious moment as if it were yesterday. 8)