Hi Kent,
You are right, (sorry Antony
![Smile :)](./images/smilies/icon_smile.gif)
)
The radial fins at the top of the "Flame-Destroyer", the literal translation of Flammenvernichter, were part of a fixed baffle assembly. Viewed as a cut away from the side each fin was "<" shaped. This not only provided an enlarge surface to cool the efflux and catch any sparks, but also stopped the flashes been seen from above. The large shroud served to to direct the cooled, but still noxious gases, away from the rear deck and any troops riding there.
The device also had a special manifold, visible if you look up the suppressor from below eg on the Bovington post-war Ausf G example. The manifold looks like a tall wok-burner, comprising a toroidal welded manifold with fifteen protuding gas ports.
No point making them at they would never be seen and would kill the effect of a smoker straight off! However if anyone wants drawings they can be found in "The Panther Project" DVD.
Cheers, Fabrice