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

From	"F. Russell" <fr@random.info>
Newsgroups	sci.physics
Subject	Re: Does this create downward pressure; is it a spoiler.
Date	2017-07-08 17:08 +0000
Organization	NewsGuy - Unlimited Usenet $23.95
Message-ID	<ojr3ib01e6l@news4.newsguy.com> (permalink)
References	(1 earlier) <g9v23e-lj7.ln1@mail.specsol.com> <595eed80$0$34591$c3e8da3$dbd57e7@news.astraweb.com> <1ns0mctbv1ar6msmdljgmfrdah0ssd31b4@4ax.com> <ojqvvv0aov@news3.newsguy.com> <ojr1sj$eq9$1@gioia.aioe.org>

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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.

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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