Quote:
Originally Posted by JulianEdgar
Never mind. I think everyone else can see the airflow wrapping over the upper surfaces, giving those low pressures where the body curves are greatest. That's what we were discussing, remember?
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1) the nose and tail are part of the upper surface.
2) in side elevation view it's impossible for the streamlines not to be crowded together, it's an element of Bernoulli's relationship between displacement, velocity, and pressure.
3) I'd be surprised if you could find a member here at the aero forum that doesn't already firmly understand that.
4) that area near the roof apex does not govern lift. It doesn't matter how low the pressure is at that location. It's as if you were saying that our Hoover Dam could never be a success due to the high hydrostatic pressure out in the middle of the span, as if ignoring the countering force where the dam is anchored to the canyon walls.
5) all the low pressure of the suction peak can be overwhelmed by the high local static pressure acting at the nose and tail.
6) and no discussion about lift can ignore the underbody pressure distribution.
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My # 9 comment is scientifically correct.