Eutectic KNO3-NaNO3-Mannitol‏ propellant

Eutectic KNO3-NaNO3-Mannitol‏ propellant was made with the same method described here. Mannitol has the lowest solubility in water from all sugar alcohols, therefore it is very less hygroscopic. The cured propellant has a density like ceramic. It deflagrates similar fast as  using sorbitol but whitout bright white flame and a lot of white smoke is generated.

Cured propellant chunks:

As the state of matter of the propellant during manufacturing is liquid, carbon fiber, cellulose fiber etc. could be inserted to reinforce the propellant. 

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