Quote:
Originally Posted by Philscar
Stand on your bathroom scale.
Hold hair dryer in your hand and point it at your forehead.
Run blow dryer on cool setting(don't fry your brain).
Check weight before and after.
If you get lighter with wind blowing over your head,you are developing lift!
Sailboat sails develop lift .
Airplane wings develop lift.
Cars develop lift if they are shaped like a wing.
Tape a sheet of paper to a table edge with most of it hanging down.
Blow some air over the table in the direction of the paper.
Shazam! The paper lifts up!
Lift caused by the airflow faster over the top than the bottom.
I rest my case........
Phil
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Those amounts of lift are tiny. The reason the paper experiment convinces people that planes fly through the Bernoulli effect and not airflow turning is because the paper is so light for its surface area.
If the Bernoulli effect really was that strong, you could tilt a flat plate downward into airflow, and it would generate lift at any angle up to the point that flow turning balances it out.
What about those Bonneville Salt Flats spoilers? Fast airflow on top, virtually no airflow below. So do they create lift?
