Fig. 6. Speed and glide angle vs time for one trajectory with possible equilibrium component. At a time late in the trajectory (gray shading), airspeed (thick black line), sinking speed (thick gray line), horizontal speed (thin black line) and glide angle (red line) all exhibit generally constant values. The cause of the oscillations in glide angle is unknown - they may be the result of the midpoint of the snake not coinciding with the effective center of mass, or they may be due to an increase in coordinate error as the snake moves away from the cameras. Mass=11 g, SVL=47 cm.