Ionic Wind

Electrohydrodynamic Thrust — Silent Propulsion via Ion-Neutral Collisions

Voltage (kV) 20 kV

Gap Distance (cm) 5.0 cm

Polarity Positive Corona

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0.00Wind Speed (m/s)

0.00Current (μA)

0.0Efficiency (mN/W)

Ionic wind (electrohydrodynamic thruster): ions created near a sharp emitter electrode accelerate in the electric field toward a collector. They collide with neutral air molecules, transferring momentum and creating bulk airflow — with no moving parts. Used in silent fans, aircraft propulsion research (MIT 2018), and air purifiers.