Maximum negative g force11/8/2023 Well, the opposite of a blackout from positive Gs is a redout, where your vision gets red from all the blood collecting in your head. I know loss-of-conciousness can happen between +5 to +11 g's depending on how fit you are and what equipment you are wearing. I heard this happens around -1g for "disgusting fatbodies" like myself. I heard from someone/somewhere that bad things happen when the negative g's are too much, like you start popping blood vessels in the brain. At high altitudes with a heavy load more like 15° We would never turn this steep in line operations, with 25°-30° bank being about normal. We'd do a 180 in one direction, roll out for a moment, then a 180 in the opposite direction to roll out on the original heading, on altitude, on-speed. We would enter at 250 knots and use a 45° bank. In a type rating checkride in training done under Part 121 Subpart N, (Pre- AQP airline training) we had to demonstrate "steep turns" in each direction. 25G push over that the autopilot might use to start a descent will not even wake up sleeping passengers.Ī 60 degree bank is 2 Gs, but that is beyond anything that would happen unless there was an emergency. If I say 1.1G that is a very slight acceleration of only one-tenth more than you feel normally. 9G I am talking about one-tenth of a G less than you feel sitting in your chair right now. 9 Lateral G (starting from zero).Īs Oly720man pointed out, when talking about vertical G-force, you have to start at earth's naturally occuring 1 G. 2 G would cause drinks and passengers to begin floating around the cabin, and 1.8 or 1.9 G would make it difficult, maybe impossible for passengers to get out of their seats.įor a comparison, find a friend with a serious sports car (Porsche 911 or something), and have him sustain a relatively tight turn around a circle at the absolute limit of the tires' adhesion. 9 G GREATER than normal 1.0 G level, turbulence-free flight, then you're talking about huge G forces that would certainly be uncomfortable for passengers. I hope i'm not off on a tangent that you didn't intend, but if you mean. 1.1 G would push your body into the seat slightly. 9 G would make your body feel slightly lighter. As Oly720man pointed out, when talking about vertical G-force, you have to start at earth's naturally occuring 1 G. 9 G, and not 1.1 and 1.2 G, I suspect (and please correct me if I'm wrong) that you may be counting up from zero.in other words, "zero G" is straight and level flight. So by these standards, you'd say that I wouldn't cause any passengers' stomachs to turn uncomfortably if I initiate a descent that causes the airplane to experience.
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