Re: Does this create downward pressure; is it a spoiler.

From	Sегg io <innvalid@invalid.com>
Newsgroups	sci.physics
Subject	Re: Does this create downward pressure; is it a spoiler.
Date	2017-07-08 12:22 -0500
Organization	Aioe.org NNTP Server
Message-ID	<ojr4cl$ian$1@gioia.aioe.org> (permalink)
References	(2 earlier) <595eed80$0$34591$c3e8da3$dbd57e7@news.astraweb.com> <1ns0mctbv1ar6msmdljgmfrdah0ssd31b4@4ax.com> <ojqvvv0aov@news3.newsguy.com> <ojr1sj$eq9$1@gioia.aioe.org> <ojr3ib01e6l@news4.newsguy.com>

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On 7/8/2017 12:08 PM, F. Russell wrote:
> On Sat, 08 Jul 2017 11:39:31 -0500, Sегg io wrote:
> 
>>
>>   But that force is quite small.
>>
> 
> However, reduction in drag is always very important, but it is doubtful
> that the common auto spoiler can have much effect in this area.
> 
> The trucking industry has been "streamlining" trucks because
> the fuel savings can be quite significant.  Here is a link:
> 
> https://www.tc.gc.ca/eng/programs/environment-etv-menu-eng-2939.html
> 
> Railroad companies have also been experimenting with drag reduction
> techniques.  Union Pacific, for example, has the "aero wedge:"
> 
> http://www.rrpicturearchives.net/showPicture.aspx?id=2526176
> 
> http://www.uprr.com/newsinfo/releases/environment/2013/0903_arrowedge.shtml
> 
> 
> The only way to effectively reduce drag on automobiles would be
> to introduce drastic changes in shape which most buyers would
> reject.
> 

totally agree, streamlining reduces gas consumption





but some sports cars have been streamlined for a while, they could 
improve too.  Some mags list the aero coeficient for the cars.

Mustang went from a brick in the 90s to more streamlined in the 2015

But then there is the SUV crowd...  And the 4 wheel Truck crowd

Thread

Does this create downward pressure; is it a spoiler. micky <NONONOmisc07@bigfoot.com> - 2017-07-06 19:39 -0400
  Re: Does this create downward pressure; is it a spoiler. jimp@specsol.spam.sux.com - 2017-07-06 23:56 +0000
    Re: Does this create downward pressure; is it a spoiler. benj <benj@nobody.net> - 2017-07-06 22:10 -0400
      Re: Does this create downward pressure; is it a spoiler. jimp@specsol.spam.sux.com - 2017-07-07 05:01 +0000
        Re: Does this create downward pressure; is it a spoiler. benj <nobody@gmail.com> - 2017-07-08 21:47 -0400
          Re: Does this create downward pressure; is it a spoiler. jimp@specsol.spam.sux.com - 2017-07-09 05:07 +0000
            Re: Does this create downward pressure; is it a spoiler. benj <benj@nobody.net> - 2017-07-10 18:08 -0400
              Re: Does this create downward pressure; is it a spoiler. jimp@specsol.spam.sux.com - 2017-07-10 22:23 +0000
      Re: Does this create downward pressure; is it a spoiler. micky <NONONOmisc07@bigfoot.com> - 2017-07-08 02:15 -0400
        Re: Does this create downward pressure; is it a spoiler. "F. Russell" <fr@random.info> - 2017-07-08 16:07 +0000
          Re: Does this create downward pressure; is it a spoiler. Sегg io <innvalid@invalid.com> - 2017-07-08 11:39 -0500
            Re: Does this create downward pressure; is it a spoiler. "F. Russell" <fr@random.info> - 2017-07-08 17:08 +0000
              Re: Does this create downward pressure; is it a spoiler. Sегg io <innvalid@invalid.com> - 2017-07-08 12:22 -0500
          Re: Does this create downward pressure; is it a spoiler. micky <NONONOmisc07@bigfoot.com> - 2017-07-10 23:41 -0400
  Re: Does this create downward pressure; is it a spoiler. "F. Russell" <fr@random.info> - 2017-07-08 16:17 +0000
  Re: Does this create downward pressure; is it a spoiler. "F. Russell" <fr@random.info> - 2017-07-08 16:36 +0000
  Re: Does this create downward pressure; is it a spoiler. Michael J. Strickland <michael06582@comcast.net> - 2017-07-09 18:07 -0400
    Re: Does this create downward pressure; is it a spoiler. pnalsing@gmail.com - 2017-07-09 15:36 -0700
    Re: Does this create downward pressure; is it a spoiler. micky <NONONOmisc07@bigfoot.com> - 2017-07-10 23:35 -0400

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