Flight efficancy a different perspective

lets consider that the wing of a plane uses the same mechanism to generate thrust then a propeller or rocket engine, that is accelerate a mass to cause a force in the opposite direction. and lets ignore everything except the wing itself.

 

DL=2Vf/ (sqrt{M *g / Vf * S} )

Vf=flight velocity

M=mass

g=gravitation acceleration 10m/s2

S= wing span

 

a 1kg plane with a wing span of 2 meters and 10m/s would have DLmax of around 30

and the same wing with a velocity of 33m/s and 10kg a DLmax of 55

 

what are your thoughts?

 

 

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  • * asume mass of air is 1kg/m3

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