Has anyone done a realistic-looking semi-transparent rocket exhaust 
plume (no bright fire and no smoke) and if so, how ? I'm thinking of 
something vaguely similar to these (except it will be from a spacecraft 
in space and not on the ground):

http://www.clavius.org/img/az50fire.jpg
http://www.clavius.org/img/tit2-engine.jpg

And maybe a bit like this although I want a much more regular plume 
shape:

http://cs.space.eads.net/sp/images/Plume_S10-2.jpg

Basically, what I want is a faint plume with a fuzzy outer boundary, 
with its visibility strongest (and also the lowest level of 
transparency) not far from its outer boundary as in the links above.

-- 
Bjorn Jonsson / bjj### [at] ZZZmmediais
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Bjorn Jonsson wrote:
> 
> Has anyone done a realistic-looking semi-transparent rocket exhaust
> plume (no bright fire and no smoke) and if so, how ? I'm thinking of
> something vaguely similar to these (except it will be from a
> spacecraft in space and not on the ground):

I have one in my April 03 IRTC entry:

  http://www.irtc.org/ftp/pub/anims/2003-04-15/advent.mpg

You may not like the color, but the technique should be adaptable to
your purposes.

Regards,
John

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In article <403### [at] hotmailcom>, evi### [at] hotmailcom 
says...
> Bjorn Jonsson wrote:
> > 
> > Has anyone done a realistic-looking semi-transparent rocket exhaust
> > plume (no bright fire and no smoke) and if so, how ? I'm thinking of
> > something vaguely similar to these (except it will be from a
> > spacecraft in space and not on the ground):
> 
> I have one in my April 03 IRTC entry:
> 
>   http://www.irtc.org/ftp/pub/anims/2003-04-15/advent.mpg
> 
> You may not like the color, but the technique should be adaptable to
> your purposes.
> 
> Regards,
> John
> 

This is somewhat similar to what I'm trying to do and could definitely 
be modified into something I'd be happy with. The only problem is that I 
found no source code or description of how this was done ;-).

FWIW what I'm planning to do is to add the exhaust plume to this:

http://www.mmedia.is/~bjj/css_53187,055560_no_plume.jpg

This will show NASA's Cassini spacecraft firing its retrorocket to enter 
orbit around Saturn.

-- 
Bjorn Jonsson / bjj### [at] ZZZmmediais
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I've posted one to povray.text.scene-files which you might be able to work
with, although it's written up kind of crudely. Subject line is Rocket
Nozzle example.

Loved the animation John showed. Figured it probably had the scene file
there at IRTC... appears not, like you said. I only see the text description
along with MPG and JPG files. I'd hazard to guess it must be quite a bunch
of files to get all of it animated.

-- 
Bob H.
http://www.3digitaleyes.com

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Bjorn Jonsson wrote:
> 
> >
> 
> This is somewhat similar to what I'm trying to do and could definitely
> be modified into something I'd be happy with. The only problem is that
> I found no source code or description of how this was done ;-).

I generally don't post my sources, mainly because I don't want to get
too much mail about people having trouble with them.

The code used to generate the flames is posted to p.t.scene-files.

Regards,
John

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Hughes, B. wrote:
> 
> I'd hazard to guess it must be quite a bunch of files to get all of it
> animated.

There are 19 files that simple set up the scenes and place objects,
subtitles, and so on.  There is another file for the valley, each
building, each robot (4 different ones used), the ship, the road, the
orchard, and various others as well.

Regards,
John

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