Aeagle.279
net.space
utzoo!decvax!harpo!eagle!karn
Wed Apr 21 15:00:05 1982
Saturn V engines
I recently bought one of those "laser prints" of NASA photographs, and I
must say that they are very well done. One of them is a picture of the
Apollo 15 launch, and I noticed something that I'd seen before on shots
of Saturn V launches.
If you look carefully at the end of the first stage engine nozzles, you will
note that there is a region below the nozzles where the exhaust is a dark
reddish color, instead of the brilliant yellow-white of the exhaust
farther down. Does anyone know what causes this? I would think that
the propellants would have thoroughly mixed and burned before leaving the
engine nozzle.
Phil Karn
Bell Labs Murray Hill
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