Metro aerodynamics - Page 15 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

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Old 07-14-2006, 10:47 AM   #141
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There was a lot of activity in this thread while I was away. Just got caught up on it all.

I love the Photoshop stuff. (Or Corel, Mark?)

The rear Metro wing and the boat-tails are great stuff. I was out staring at the back of my car last night, wheels turning (in my head) ...
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Old 07-14-2006, 10:52 AM   #142
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Quote:
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For those who are interested, I have updated my site with a page about the XFi Aero Car that was posted in this thread in June.
Nicely done!
Great info...wish I could get some of those custom machined taller 5th gears! Would have normal gearing for 'power' and 'long legs' like yours!
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Old 07-14-2006, 10:56 AM   #143
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Those custom gears would be the best of both worlds, wouldn't they.

Did you also send other questions to the Aero Car builder? If you heard back and have anything to add, please share!
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Old 07-14-2006, 10:58 AM   #144
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Never heard anything back...emailed his son more than once, but didn't want to bug him anymore.

Good Follow up on your part!
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Old 08-15-2006, 06:39 PM   #145
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The Questair Venture provides a good example of an aircraft boat tail shape that could be easily adapted to fit a car. This very fast homebuilt has been called "the flying egg" and has a very short tail, but presumably has attached airflow to manage the speeds that it reaches. It has a 48" wide cockpit, comparable in width to that of a subcompact car.

http://www.aircraftpaintschemes.com/...AircraftID=367

http://www.airbum.com/pireps/QuestairVentureNose-on.jpg

http://home.triad.rr.com/mcintyre5/Questair.gif

http://www.wallacecompany.com/venture/
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Old 08-16-2006, 07:32 AM   #146
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Here are some line drawings of the Venture. Its tailcone seems to exceed the 10 to one ratio that people have quoted are being the sharpest taper that can retain an attached airflow. This aircraft is one of the fastest prop-driven homebuilts and holds a number of speed records in its class.



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Old 08-16-2006, 08:15 AM   #147
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Quote:
Originally Posted by basjoos
Here are some line drawings of the Venture. Its tailcone seems to exceed the 10 to one ratio that people have quoted
My understanding is the "10" refers to max "degrees" (from vehicle direction of travel/air flow direction) that a plane can change inward. And one of the Chalmers reports shows that it's actually more of a range, from 10-20, with a sweet spot in there somewhere.

I also read a Phil Knox quote recently that says an elliptical curve (beginning from parallel to wind flow) to up to 20 degrees inward can still maintain attached flow - you just can't go to 20 degrees instantly. That's my understanding, anyway. Would explain the appearance of this airplane.

http://autos.groups.yahoo.com/group/maxmpg/message/809
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Old 08-27-2006, 07:21 PM   #148
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Coroplast to the rescue! Cut my front undertray this evening. Just some minor tweaking to get it done.

It will be relatively easy to install/remove, so I can probably do a test run with it as well. Eventually.
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Old 08-27-2006, 07:39 PM   #149
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Tomorrow! I'll take over for you at work.
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Old 08-29-2006, 10:33 AM   #150
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Celica wing seen:



Guess I could have gotten a little closer...but there are 2 small vertical wings that are angled inward at each end.
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