MadSci Network: Physics

Subject: If an airfoil is vibrated horizontally, will it creat lift?

Date: Fri Dec 9 20:44:44 2005
Posted by Frank
Grade level: grad (science) School: No school entered.
City: Newbury Park State/Province: CA Country: USA
Area of science: Physics
ID: 1134186284.Ph

Bernuoli's principle states that as a fluid moves over an airfoil the pressure 
above it is less than the pressure below causing a net lift.  It does not 
matter if the fluid flows from left to right...or from right to left.  It would 
seem possible therefore to move the airfoil itself relative to the fluid back 
and forth at a high enough frequency to approximate a speed greater than the 
stall speed of the wing/load combination....This would seem to create lift. 
Push - Pull solenoids could move the airfoil 1/4" side to side at 4.32 KHz to 
approximate a 60 mph relative airspeed to airfoil (stall speed of a small plane)

Re: If an airfoil is vibrated horizontally, will it creat lift?

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