The Reynolds number for airborne robots is close to unity; the viscous forces dominate the inertial forces, so lift could use the flagella like the motile form of E. coli.
The Reynolds number for airborne robots is close to unity; the viscous forces dominate the inertial forces, so lift could use the viscosity of air. Robots moving through fluids may require rotating flagella like the motile form of E. coli.