Fig. 1. Diagram showing two types of turning mechanisms. (A) A banked turn, in which a bat rolls into the turn. By banking the body, a bat tilts the dorsal component of the net aerodynamic force (NAF_dorsal) produced during downstroke towards the center of the turn; the lateral component of the NAF_dorsal corresponds to the centripetal force (CF). (B) A crabbed turn, in which a bat yaws into the turn. The yawing of the body will reorient the forward component of the net aerodynamic force (NAF_forward) produced during downstroke towards the center of the turn; the lateral component of the NAF_forward corresponds to the centripetal force.