[SS-Propellant] casting vibrator

[Mateica Vlad]

Rich Nakka <richnakka at rogers.com> wrote:
  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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  Interesting ideea Richard. For some good results we need to calculate the excentric dimensions(diameter, mass) and to make a controlled temperature curing oven. In this way we can cast the propellant segment, put it into the oven(where is the vibrator) and slowly cool the oven so that the density well be maximized. we can't cast the propellant into the vibrating mold. the oven can be made simple with a termostat and a heating coil. the electronic schematic for the termostat cand be provided by Prodan Paul from the safty team(he is making a termostat right now for me to easy my casting procedure) 
  Vlad
  


		
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