Interactive model - hover or click components to inspect the physics.
Ionic Wind Thruster
A high-voltage electrohydrodynamic thruster that turns Physics II electromagnetism into measurable airflow. A sharp positive nickel emitter and smooth negative copper collector create a strong field across an adjustable gap.
Near the emitter, air becomes ionized, ions accelerate through the field, and collisions transfer momentum into neutral air. I use measured wind speed to tune geometry, spacing, electrical connections, and repeatability from one version to the next.
The violet glow comes from excited and ionized air species in the discharge region, with nitrogen contributing strongly to the observed color.
Ask me about the design evolution, test setup, or physics tradeoffs behind the thruster.
Laws & Equations
Ion force scales with charge and electric field strength.
Voltage, gap distance, and sharp geometry set the practical field strength.
Background electrostatic interaction between charges.
Particles exchange potential energy across the voltage difference.
Accelerated ions carry kinetic energy into the flow.
Ion-neutral collisions produce the measurable wind output.
Why Geometry Matters
Sharp emitter features concentrate the field and improve ionization efficiency. The smoother collector, repeatable mounting, and gap tuning help stabilize the discharge and make airflow tests more comparable.
Design Iteration
Each revision targets higher airflow, stronger wind, cleaner electrical connections, better alignment, and more consistent ionization behavior. The current model is part of an ongoing optimization process.