I further enhanced my all Magnesium (Mg) rocket design. Sodium (Na) metal can be sandwiched between the Magnesium outer and inner shells of the rocket. This method would increase the cost of production of the rocket compared to a direct extrusion-based manufacturing of all Magnesium rocket. However, Sodium is lighter and has higher vapor pressure than Magnesium at a given temperature. Sodium needs to be sealed in Magnesium casing to prevent it to be reacting with the humid air. Once the rocket is ignited the inner Magnesium layer would evaporate and Sodium would be revealed.
Sodium can be extracted from the salty Mediterranean near the Space Base. Sodium, like Magnesium is environmentally friendly.
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