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Search took 0.23 seconds. Search: Posts Made By: MkVer
Forum: Aerodynamics 05-01-2016, 02:45 AM
Replies: 35
Views: 4,670
Posted By skyking
Ok, look at it this way. two planes, A and B ...

Ok, look at it this way.
two planes, A and B
Each plane is the same but plane A weighs more.
At any given speed and altitude, in unaccelerated level flight, plane A must have a higher angle of...
Forum: Aerodynamics 05-01-2016, 02:24 AM
Replies: 35
Views: 4,670
Posted By skyking
There is no such thing as a free lunch. To...

There is no such thing as a free lunch. To achieve the higher speed, it takes a lot more thrust.
Forum: Aerodynamics 05-01-2016, 01:35 AM
Replies: 35
Views: 4,670
Posted By skyking
yes you can. It really is that simple. To fly the...

yes you can. It really is that simple. To fly the same speed as a lighter plane, you'd need a higher angle of attack. This takes more thrust. More fuel.
My background is commercial pilot and flight...
Forum: Aerodynamics 04-26-2016, 05:18 PM
Replies: 38
Views: 5,219
Posted By Focus-Ak
Roof rack fuel penalty nationwide (US)

(The abstract linked in the story is here: Fuel consumption impacts of auto roof racks (http://www.sciencedirect.com/science/article/pii/S0301421516300714))

Roof racks create drag, cost gas --...
Forum: EcoModding Central 11-07-2015, 04:29 PM
Replies: 16
Views: 4,121
Posted By gone-ot
Less weight will enhance in-city mileage slightly...

Less weight will enhance in-city mileage slightly where mass dominates.

Wheel covers will enhance highway mileage where aero-drag dominates.
Forum: General Efficiency Discussion 09-23-2015, 08:24 PM
Replies: 246
Views: 35,820
Posted By user removed
I like parts per mile for emissions, versus the...

I like parts per mile for emissions, versus the parts per million fiasco that punishes a 60 mpg car for nox but allows a gas hog to produce several times the nox by weight in the same distance due to...
Forum: General Efficiency Discussion 09-23-2015, 11:44 AM
Replies: 246
Views: 35,820
Posted By UFO
I've had a little trouble putting the scale of...

I've had a little trouble putting the scale of the pollution into perspective, but I suspect the actual pollution is still less than earlier VW designs. Compared to a gasoline vehicle, diesels emit...
Forum: The Unicorn Corral 06-11-2015, 02:22 PM
Replies: 8
Views: 3,577
Posted By elhigh
The two gases aren't that dissimilar in their...

The two gases aren't that dissimilar in their molecular weight, nitrogen is about 88% of oxygen by weight.

I'm not very good at this advanced stuff so let me just play with the math on my...
Forum: The Unicorn Corral 06-10-2015, 02:53 AM
Replies: 8
Views: 3,577
Posted By markweatherill
I am sure there's some or other reason why more...

I am sure there's some or other reason why more oxygen isn't necessarily a good thing.

And, if my car has a turbo, is it doing this already?
Forum: Aerodynamics 01-11-2013, 01:31 PM
Replies: 60
Views: 15,869
Posted By ChazInMT
Indeed this is an excellent build, and is...

Indeed this is an excellent build, and is probably the strongest looking cap I've seen.

If you do a Gen2, you'll probably want to consider going at about an 8° angle, this would raise the back 6...
Forum: Aerodynamics 01-10-2013, 06:23 PM
Replies: 60
Views: 15,869
Posted By rdefayette
"Wedge" Cap for pick up trucks

The intent of this design was originally to help improve fuel mileage by utilizing a “wedge” type bed cover to eliminate/reduce laminar airflow separation that is normally associated with traditional...
Forum: Aerodynamics 11-03-2011, 07:29 PM
Replies: 636
Views: 443,013
Posted By Chris D.
Here ya go John.. :thumbup: ...

Here ya go John.. :thumbup:

http://i4.photobucket.com/albums/y104/PentastarTurbo/tacoma/AeroTopper/IMAG0067.jpg
...
Forum: Aerodynamics 01-19-2010, 11:37 PM
Replies: 4,211
Views: 1,321,853
Posted By NeilBlanchard
Here is a VERY interesting model -- it is...

Here is a VERY interesting model -- it is apparently an earlier concept of the Mercedes Bionic "Boxfish" car:

http://www.carbodydesign.com/concept-cars/2005-06-23-mercedes-bionic/3.jpg

It has a...
Showing results 1 to 13 of 13

 
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