Nope the model is correct note the acceleration of the flow in the 'torus' model
The relative wind [flow] is accelerated at the top---which 'pulls' the bottom flow into greater density hence higher pressure--- one wants a pressure increase on the bottom and decrease at the top the FAA publications are all very good
airplane flying handbook,glider flying handbook, aircraft W&B handbook instrument flying handbook, helicopter flying handbook, pilot's handbook/encyclopedia of aeronautical knowledge, seaplanes, ski planes and float and ski equipped helipcopter flying hand book...and although this is biased to FAA rules the instrument procedures handbook and they are very cheap too... those are what I use for ground school with my flock...very accurate!!!
there is some some blatant plagiarizing from Hurt and Davies' but that's ok the government can steal...look at Taxes...
