Theory Postulates

Postulate-1

Aerodynamic Lift is not the result of any kind of reaction force on wing due to its angle of attack. Lift is the vertical component of the pneumatic suction force F-aero which acts perpendicularly to the Inductor Surface of the airfoil.

F-aero resolves into the vertical lift vector and a horizontal vector F-exp or expansion force. This expansion force F-exp is countered by thrust which causes expansion of air above the airfoil inductor surface.

All the energy produced by the engines goes into expanding the air in the induction zone, and a much smaller fraction of the thrust is used in overcoming the friction or drag.

Postulate-2

An airfoil wing moving in air creates two distinct regions of different pressures, over its top surface. These are called the forward Subduction-Zone and the rear Induction-Zone. The Subduction-Zone is a region immediately around the leading edge, and extends backwards up to the zero-slope line on the airfoil. The pressure in the Subduction-Zone is above atmospheric pressure. The Induction-Zone is a region of less than normal atmospheric pressure between the zero-slope line and the trailing edge. These pressure zones are illustrated in figure above. The creation these two zones by a moving object is a manifestation of the Salman Effect.

Postulate-3

During flight there is no flow of any kind, either streamlined or laminar over and under an air foil wing. For all practical purposes, the air mass surrounding the wing is stationary. Consequently, the aerodynamic lift generation action of the airfoil is not attributable to any kind of motion of air.

Postulate-4

There is essentially random turbulence on the top surface of an airfoil wing i.e., between the leading and trailing edges, as shown in figure below. This is due to the random motion of the atmospheric air mass which rushes in rapidly towards the wing from all directions, to normalize the pressure back to atmospheric conditions.

Postulate-5

There’s no such thing as a boundary layer adhering to the wing surfaces. Even if there is, it doesn’t take any part in lift generation. Unlike water, air does not wet the wing.

Postulate-6

The Coanda Effect applies to air flowing over still objects, but not to objects moving in still air. The Salman Effect of Aerodynamics relates to the creation of two distinct regions of different pressures, one called the Subduction-Zone ahead of a moving object, and the other Induction-Zone behind the same object. The forward Subduction-Zone has higher then atmospheric pressure, and the rear Induction Zone has a less then atmospheric pressure.

For the case of the airfoil, the Induction Zone is in the space immediately over the rear slope or the Inductor surface of the wing. The Subduction-Zone is created immediately ahead of the leading edge, as shown in figures above in the beginning.

Salman Mazher (Author) https://www.tekemon.com 16th Nov, 2023