PROPELLANT ISOLATION BARRIER
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United States of America Patent
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Apr 8, 2016
filing date -
Apr 9, 2014
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Abstract
An electrospray thruster and method includes an emitter, an extractor, and a propellant storage vessel. A porous propellant delivery pathway from the vessel to the emitter wicks liquid propellant to the emitter. An ionic liquid in the vessel has a chemical composition rending the ionic liquid solid at room temperature to prevent water absorption. In the liquid state, the ionic liquid exhibits favorable electrospray characteristics. A heater associated with the vessel is configured to heat the ionic liquid to above its melting point when thrust is required for delivery to the emitter via the porous propellant delivery pathway.
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