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OT: Fuel mileage and wings
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4/23/11, 5:42 PM |
#11
Re: OT: Fuel mileage and wings
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Senior Member
Join Date: Jul 2007 Posts: 912 |
I will take 3 dozen of those golf balls! lol
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4/23/11, 9:30 PM |
#12
Re: OT: Fuel mileage and wings
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Member
Join Date: Dec 2008 Posts: 34 |
LOL.....well, I think the PGA officially outlawed them years ago. However, I believe you can make them yourself if you really wanted to. I'm sure you can find directions somewhere on the internet.
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4/23/11, 10:19 PM |
#13
Re: OT: Fuel mileage and wings
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Senior Member
Race Count This Year: 6 Race Count Last Year: 14 Join Date: Jul 2007 Posts: 21,633 |
There was a problem back in the 50's with a certain chrysler model with curved tail fins. At high speeds the rear end would lift.
Many cars have spoilers, Some are for show but the low slung ones are purely to break up the air sucking the car backward (Drag) Therefore improving Milage
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Charles Nungester
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4/24/11, 2:25 AM |
#14
Re: OT: Fuel mileage and wings
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Member
Join Date: Aug 2007 Posts: 171 |
Quote:
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4/25/11, 10:52 AM |
#15
Re: OT: Fuel mileage and wings
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Member
Join Date: Dec 2008 Posts: 34 |
Quote:
Part of the background research for this particular paper cited previous dimple testing: "James Lake [6] examined dimple location along with comparing dimples to v-grooves and trip wires in his investigation on reducing sparation on a Pak-B turbine blades. He found that dimple location had an effect on dimple effectiveness. Dimples were most effective when placed slightly upstream of the unmodifed blade separation point. As the dimple was moved further upstream of the separation point, its effectiveness decreased. His research shows that for maximum effect, dimples should be placed as closely as possible to the point of separation." That's what I was trying to say originally. Although hail-damage could aid in fuel mileage, properly placed dimples would be most advantageous. Now, the paper I posted goes further, looking at the diameter/depth ratio of the dimples, and how that affects the flow characteristics. |
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4/26/11, 12:29 AM |
#16
Re: OT: Fuel mileage and wings
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Member
Join Date: May 2010 Posts: 191 |
Interesting topic. I love "talking airflow". We "dimpled" a couple of different Brigg's cylinder head's in the combustion area in different "pattern's/area's when we were racing kart's and we def. saw improvement's in "burn" and had to actually richin up the engine. It must have improved "swirl" as the engine sure "came off the corner" better / had better throttle response.
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OT: Fuel mileage and wings
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