Passive Anisotropic Propulsion (PAP): Extending the Capabilities of Capillary Fluid Management in Aerospace and Industry
From the essay
Passive Anisotropic Propulsion (PAP) is a method for directional liquid transport that combines: 1) Anisotropic conduit mechanics (a spatial gradient in opening/closing pressure), 2) One-way microvalving (flaplets/check elements) to suppress recoil, and 3) Tiny oscillations (vibration, acceleration cycles, thermal expansion) that are rectified into net forward flow.
Adapted from PDF pages 1.