Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-18-2018, 12:18 AM   #61 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,500
Thanks: 8,060
Thanked 8,863 Times in 7,316 Posts
It's all about the frontal area.

OSI SIlver Fox:

http://www.velocetoday.com/wp-conten...7/4Z5U5258.jpg

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-18-2018, 03:58 PM   #62 (permalink)
Master EcoModder
 
euromodder's Avatar
 
Join Date: Jul 2010
Location: Belgium
Posts: 4,683

The SCUD - '15 Fiat Scudo L2
Thanks: 178
Thanked 652 Times in 516 Posts
Did the Abarth have a rear engine ?
Looks like cooling scoops ...

On the Prius, it looks a roof indent rather than a bubble - trying to keep the air on the roof instead of spilling over to the sides ?
__________________
Strayed to the Dark Diesel Side

  Reply With Quote
Old 08-18-2018, 05:43 PM   #63 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,500
Thanks: 8,060
Thanked 8,863 Times in 7,316 Posts
Abarth built on IIRC Fiat and Simca chassis. I'd call the Prius a Pagoda Roof , like the Mercedes 240-300SL. It's opposite to the Dan Gurney bubble:

https://www.thetruthaboutcars.com/20...urneys-bubbly/
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
Old 08-18-2018, 09:54 PM   #64 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
Gurney "bubble" was so a 6-foot-4-inch driver could physically "fit" into the cockpit and behind the wheel, it had nothing to do with aerodynamics.
  Reply With Quote
Old 08-19-2018, 12:31 AM   #65 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,500
Thanks: 8,060
Thanked 8,863 Times in 7,316 Posts
The pagoda roof is also not. It has to do with ingress/egress.

edit:
My favorite aero oddity for today; a brick shaped trailer.


http://justacarguy.blogspot.com/2018...-of-color.html
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.

Last edited by freebeard; 08-19-2018 at 12:38 AM..
  Reply With Quote
Old 08-23-2018, 12:27 PM   #66 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,176
Thanks: 125
Thanked 2,802 Times in 1,968 Posts
MORE random pics...... - Page 4560 - Pelican Parts Forums


Still fluid dynamics, right?
__________________
George
Architect, Artist and Designer of Objects

2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

You cannot sell aerodynamics in a can............
  Reply With Quote
Old 08-23-2018, 02:00 PM   #67 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,864
Thanks: 0
Thanked 1,683 Times in 1,501 Posts
Quote:
Originally Posted by kach22i View Post
Still fluid dynamics, right?
Sure, since the rudder of a ship still has a similar function to the one in an aircraft
  Reply With Quote
Old 08-23-2018, 05:07 PM   #68 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,500
Thanks: 8,060
Thanked 8,863 Times in 7,316 Posts
It's interesting. I presume the blister on the leading edge is to reduce leeward turbulence. But why the step above and below it?

Oh no, Pelican Parts thread, there goes the rest of my afternoon.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
Old 08-24-2018, 02:57 PM   #69 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,176
Thanks: 125
Thanked 2,802 Times in 1,968 Posts
Quote:
Originally Posted by freebeard View Post
It's interesting. I presume the blister on the leading edge is to reduce leeward turbulence. But why the step above and below it?

Oh no, Pelican Parts thread, there goes the rest of my afternoon.
Notice as well, a slight twist at the top root.

This rudder is also acting like a vane straightening stator.

I'm assuming the smaller lower section is simply to reduce the stress, a cantilever moment arm is what the rudder actually is.

Remember, the swirling rotation of the water coming off the prop is best met at by right angles. However if they did that it would turn really well in one direction, and not at all in the other direction. This design is a compromise of some sort.

https://www.cambridge.org/core/journ...91B3DCBB77B7FE


http://www.wavefront.co.jp/CAE/PumpL...propeller.html




http://www.hhscott.com/evinrude/choosing_a_prop.htm
__________________
George
Architect, Artist and Designer of Objects

2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

You cannot sell aerodynamics in a can............

Last edited by kach22i; 08-24-2018 at 03:06 PM..
  Reply With Quote
Old 08-24-2018, 06:41 PM   #70 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,500
Thanks: 8,060
Thanked 8,863 Times in 7,316 Posts
I'm gathering parts for a 1Kw gravity vortex watermill. I've got a washing machine motor, a housing made from parts (a dog kennel and a ventilator!) and two outboard motor propellers to choose from (3-blade metal and 6-blade plastic). All I need now is a shaft to connect the propeller to the motor/generator and an optional extension tube that necks down from 14" to ~7".

Do you think it would be better to square the tips of the blades and put it in a duct, or leave the tips and put it below the end of the duct?

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com