Quote:
Originally Posted by diesel_john
It looks those winglets keep the air from falling off the end of the wing. If that reduces the drag, Would that same logic apply to a splitter on the bottom of the air dam on a car?
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I think these apply mostly to airfoils and lift. Some advanced spoilers for ultra-high speed operation (such as the upward extension of some rear spoiler for 100 MPH+ operation -- similar to winglets). These decrease FE with downforce: a trade for traction.
Experts in Aero can attest, reducing frontal area and drag is of the utmost. Winglets likely will not accomplish either in lower-speed applications.
RH77