Seykota's Theory of Lift:
A Fundamental Re-Examination of Basic
1999 by Ed Seykota
The classic theory of airplane lift is
all about wing curvature ... and that, according to Bernoulli's
Principle, fast-flowing air has lower pressure. In 1997, after
pondering this matter for some twenty years, Ed Seykota concludes that
lift has nothing at all to with Bernoulli's Principle ... rather, lift
is a function of Radial Momentum ... the radial fanning out of a fluid
lowers its density ... and therefore, the pressure decreases with
the distance from the center of radiation.
Seykota's 1/r Law
|For Expanding Rings
|P = S / r
||P = Sv / r2
|Pressure is inversely proportional
to the radius.
||Pressure is inversely proportional
to the square of the radius.
This website tells all about the Seykota
Theory of Lift: Radial Momentum.
This wing cross-section diagram appears in numerous textbooks and on
countless web sites. It accompanies the claim that Bernoulli's Principle
explains lift, in terms of higher velocity over the top of the wing
causing lower pressure.
Radial Momentum ... The Real
Air, striking the front of the wing, deflects upward,
actually pushing the front of the wing down. It then continues upward by
momentum. When it encounters the curvature on the top of the wing, it fans
out. This results in lower air density, and lower pressure ... however,
this effect occurs only behind the crest of the wing ... and it has very
little to do with lift.
In actual practice, the net effect of wing curvature on lift
is small; most of the lift comes from angle of attack; the curvature mostly
helps train the air off the back edge of the wing ... so that less energy
disappears into turbulence and more energy goes to propulsion.
Air flowing though an expanding cone tends to collapse the cone,
demonstrating lower pressure due to the Radial Momentum and "fanning
out" of the air. A parallel tube of similar proportion shows no such
The author constructs models that explain the behavior of the
Bernoulli Levitator. The model results, based on Radial Momentum
correlate nicely with experimental measurements. This figure shows a
simulation of the pressure (red), air velocity (blue) and other
parameters along the gap between the levitator table and the disk, from
the central orifice to the edge of the disk. The characteristic 1/r dip
in the pressure just outside the orifice correlates with the location of
the cavitation ring that appears when using water as the fluid.
Table of Contents
Wonder How Come Airplanes Fly
Wing, the Spool and the Plate