On Sun, 10 Jun 2001 21:42:37 -0400, George Caswell
> A couple questions regarding the wonderful ubiquitous thruster part, the
> 1: I read a definition somewhere which said that verniers are the engines
>which adjust trajectory, and other engines are responsible for primary thrust.
>Is this actually the case? Or has "vernier" fallen into common use among
>space-types as referring to a whole class of engines which may include those
>producing primary thrust?
Orientation engines. Of course, in space, these can also provide
> 2: Any good references on how various types of (current-day) vernier
>nozzles are supposed to look? Apart from driving to Florida and seeing some
>myself, that is.
Standard looking rocket nozzles. You could check NASA's satellite
image library online.
> 3: Why are some such nozzles red or yellow on the inside? Does this
>represent how the item looks straight off the production line, or would a
>nozzle still look that way after use?
Anime--nothing to do with reality. You can write it off as some sort
of advanced ceramic coating. Real nozzles are either metallic or
metals coated with a white ceramic liner (most small thruster type
engines use really *** chemicals that are fairly corrosive).
For modeling purposes, I'd go with what it looks like on the Toob and
forget reality. If they have some magic red an yellow thruster nozzle
material, perhaps they have some magic fuel that doesn't smudge or
discolor the thruster? Also, in a military application, a "smoky"
engine is "BAD". A clean engine is "GOOD".
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One time, at Band Camp........