avl: avl (program for aerodynamic and flight-dynamic analysis of aircraft) avl: avl: AVL is a program for the aerodynamic and flight-dynamic analysis of avl: rigid aircraft of arbitrary configuration. It employs an extended avl: vortex lattice model for the lifting surfaces, together with a avl: slender-body model for fuselages and nacelles. General nonlinear avl: flight states can be specified. The flight dynamic analysis combines a avl: full linearization of the aerodynamic model about any flight state, avl: together with specified mass properties. avl: avl: Homepage: http://web.mit.edu/drela/Public/web/avl/