[Demosthenes]

a wake with impact force on the jet behind it that is equivilent to .3 earth gravities.

for reference, when you SCUBA dive to 33 feet depth, you are experiencing one full additional earth gravity in the from of the pressure exerted by the weight of the water on your body.

When a fighter pilot pulls a sharp loop, inertia/centrifugal force exerts a 2G pull on his body, or, were you to place a scale under his tush during the loop, he'd weigh twice his normal standing weight.

[Darth Reagan]

when you SCUBA dive to 33 feet depth, you are experiencing one full additional earth gravity

Aren't you talking about pressure here, rather than gravity?

[Avi8tor]

When a fighter pilot pulls a sharp loop, inertia/centrifugal force exerts a 2G pull on his body, or, were you to place a scale under his tush during the loop, he'd weigh twice his normal standing weight.

Fighter jets pull more like 6-7 g's, sometimes higher.  Seatbelts are typically rated to 9Gs.  Most rollercoasters impart 3-4Gs.  Stand up from a squat, and you'll experiencing about 1.3 - 1.4 Gs.  This is nonsense, pure and simple. 

[justlurking]

for reference, when you SCUBA dive to 33 feet depth, you are experiencing one full additional earth gravity in the from of the pressure exerted by the weight of the water on your body.

No, that's pressure. At 33 feet, you experience an additional "standard atmosphere" (14.7 psi) of pressure, but since it exerted everywhere on your body, it isn't manifested as "gravity".

Gravity is acceleration (32 feet/second per second), the result of an attractive force between two masses -- in this case, you and the earth. Yes, I know the explanation is more complicated than that, but that's the "Gravity for Dummies" version. :-)

[TC Rider]

Demosthenes, meet Bernouli.

At 33 feet of depth, you meet one additional atmosphere of pressure, or an additional 15 psi enveloping you in all directions. But no G force.

Divers don't feel the extra pressure because the body is filled with mostly water anyway. If you held your breath from the surface, a lungful of air would only occupy half the space. OR, if you had a lungful of air at 33 feet and surfaced without exhaling, you would blow out your lungs or experience an embolism.

G force is observed only through gravity of a large mass or through changes in velocity.

I'm not an engineer, but did stay at a Holiday Inn Express last night.