Aerodynamics of hovering flight in the long-eared bat Plecotus auritus.
Steady-state aerodynamic and momentum theories were used for calculations of the lift and drag coefficients of Plecotus auritus in hovering flight. The lift coefficient obtained varies between 3-1 and 6-4, and the drag coefficient between --5-0 and 10-5, for the possible assumptions regarding the effective angles of attack during the upstroke. This demonstrates that hovering flight in Plecotus auritus can not be explained by quasi-steady-state aerodynamics. Thus, non-steady-state aerodynamics must prevail.
D000818:Animals; D002685:Chiroptera / Q000033:anatomy & histology / Q000502:physiology*; D005426:Flight, Animal; D008954:Models, Biological