Pressure bubble myth
Right on Graviman (see PM)
whether this busts the myth or not, is a personal call.
I would go for plausible, because static pressure under the rotor disk does go up. I had by the way the possibilty to do my "static" flying test yesterday, all beith not very scientific
at 2/3 of fuel and 1 pob the alti lowered almost 20 ft just before lift off. (surprised me that as a pilot I didn't really notice this before, perhaps to buzy doing other things in lift off, thanks Shawn...).
The alti cannot be used as a reference any more when climbing and is not precise enough to use it as an instrument to validate lower static pressure OGE...
The increased static pressure also may not be used in an extrapolative way to extend to some spherical ball kind of picture, this is why I also would be willing to rest my case.
d3