[LeGrande]

A planes wing actually creates a force called “lift” (due to the partial vacuum above the wing) a vector force which is opposite the vector gravitational force due to its mass (weight).

I am very familiar with Bernoulli’s Principle, but you are forgetting that the wing is a pump that is constantly displacing air equal to the weight of the plane in level flight. Where do you think the 'partial vacuum' (lower pressure actually) comes from?

The plane never weighs any less (except for the immeasurable amount due to its distance from the earth). The only thing you’ve falsified is your wrong theory of flight.

Of course the weight of the plane stays the same. I am talking about the weight of the air that is being displaced behind the wing.

I have a question for you that you may find fun. Why can you blow out a candle more than a foot away, but you can't suck it out more than an inch or so away?

Before there was any space-flight there were countless “scientific papers” presenting “theories” (actually hypotheses) that “proved” space flight was impossible, that enough “lift” could never be produced, etc. etc. There were other theories that suggested space flight was possible, which according to you, could never be proved.

You are doing a very good job making my point that nothing can be proved.

[editor-surveyor]

"I am very familiar with Bernoulli’s Principle, but you are forgetting that the wing is a pump that is constantly displacing air equal to the weight of the plane in level flight"

Sorry LG, but the wing is not the pump. The engine is the pump, and the wing is a fixed passive reactor. Ultimately, the force of lift comes from the combustion chamber of the engine. (or in a glider, from the combustion chamber in the tow plane)