
This paper presents a novel bio-inspired methodfor designing cyclic airspace corridors to support high-throughput, bidirectional flows of Unmanned Aircraft Systemsat Very Low Level. We adapt the Slime-Mold Algorithm togenerate corridors by modeling vertiports as attractors, no-fly zones as repulsors, and using a discretized pheromonefield to guide agent behavior. Agents operate in three roles:explorers, exploiters, and trail-thickeners, and interact solelyvia pheromone diffusion and decay. A food timer mechanismregulates exploration based on the average spacing betweenvertiports. From the resulting pheromone distribution, aCatmull–Rom spline is fitted to extract a smooth, continuouscorridor. The design is evaluated using five criteria; vertiportproximity, no-fly zone avoidance, self-intersection, curvaturesmoothness, and total length. We evaluate our approach onthree large-scale urban scenarios with up to 15 vertiportsand 10 no-fly zones. Results show convergence within 200iterations, rapid adaptation to topological changes, and thepotential to support more complex corridor structures givingpromises to the method’s suitability for real-time, dynamicairspace design in UAS traffic management.