John
I simply highlighted the fact that lift is generated by ‘deflection’ , therefore ‘Deflecting’ is the correct word, independently of how/ who /what deflects whatever fluid. In order to ‘lift’ , a wing must deflect – no deflection, no lift – everybody must agree on that !
Obviously, the section of the wing generates a deflection of the flow in a different way from the water ski – in fact , there is no flow on the upper part of the water-ski !
The wing section can ‘deflect’ the fluid also with an apparently null ‘angle of attack’ (let me not elaborate further on ‘angle-of-attack, let’s keep it simple…), and in this is helped by pressure gradients, etc , something that the water-ski cannot do – as the water-ski can only impart a deflection with its lower part.
But, again, the key-word is ‘deflection’ ; and the inverted wing section can ‘lift’ only if it can ‘deflect’ (in whatever way it obtain this ‘deflection’).
Daniel
PS: If I’ll run a search on articles , I’ll probably reference myself !