Hi there,
I took my soft top jeep wrangler on the freeway yesterday and had the windows up to conserve energy and make it more streamlined on the drive (... well, as streamlined as a Jeep can be :)
Rolled the windows down and the sound was like the jeep was thundering inside with all the wind drag.
Am I right in thinking that rolling up the back window will make for a more streamlined ride for air to come in and then head out the back?
I am looking for tips to make driving this Summer more efficient and having some air coming in as the Wrangler is pretty old and lacks AC.
Lastly, the sound of air coming the windows making the roof flap made me worry that the roof might fly off -- someone tell me that that sound is natural and that these things are generally noisy...
thanks in advance for your help
Adjustments can alter the CD* of a box.
If you close side windows but leave top and back off, the noise is very tolerable.
I am working on wind vanes/foils etc to direct wind over hood and windshield better.
It's all experimental: imagine a bugscreen up front and another mounted on top of windshield or roll bars to direct the wind.
Think like a plane and fly like a bird.
*Coefficient of drag
Yes soft top jeeps can be very loud. Honestly your probably better off just leaving the top off. No matter what you do to the jeep it is not going to be more streamlined.
check this site out from nasa it explains aerodynamics pretty well.
http://www.nasa.gov/audience/forstudents/5-8/features/what-is-aerodynamics-58.html
The problem with jeeps and aerodynamics is they are completely flat in the front they are a giant wind sale. The drag created by air inside of the cab is going to be no worst than the drag created with out it.
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