"Jim Holsenback" <jho### [at] hotmailcom> wrote in message 
news:49521f4f@news.povray.org...
>
> "Alain" <ele### [at] netscapenet> wrote in message 
> news:49513fe9$1@news.povray.org...
>> My take would be to place a long cylinder or a cone with pigment rgbt 1 
>> give it an ior around 0.99 and use a slight normal perturbation: 
>> normal{bozo 0.1 scale<100,1,1>} for a jet along the x axis. Rotate as 
>> needed.
>
> Expanding on the cone idea .... rib the cone with tori. Afterburning 
> engines gable the exhaust nozzle from cylinder to cone-ish shape, and the 
> exhaust

      ^----------
meant to say gimble

> plume has these bright rings along it's length.

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