[SS-Propellant] casting vibrator

[Rich Nakka]

Gents,
While in the process of organizing a stack of technical notes & 
correspondences, I came across something of interest. In correspondence 
with a fellow rocketeer in Denmark some years ago, he told me about a 
vibrator that he used to aid casting of propellants, which was 
apparently very effective in helping the slurry to flow and fill all 
spaces in the mould.
3.0 kW motor
Eccentric flywheel to produce a 25 Hz vibration
Vibration amplitude 2.3 mm.

Something to consider for our casting of those large 34 kg segments. 
This may help in maximizing our propellant density?

Richard
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