What process adapts ion drive principles to create silent, terrestrial propulsion systems?
Answer
Electrohydrodynamics
Although ion thrusters are designed for vacuum, researchers have explored adapting the fundamental concept of thrust generation via electric fields for use within Earth's atmosphere. This adaptation, sometimes envisioned for silent aircraft propulsion, involves using very high voltages to generate an ionic wind. This specific process, which pushes against the surrounding air rather than ejecting propellant into a vacuum, is termed electrohydrodynamics. This contrasts sharply with deep-space engines because terrestrial applications must still contend with severe drag and high energy requirements.
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