 This was long enough for Cornu to learn that the control systems he had designed were ineffective, and he abandoned the machine soon thereafter.Modern engineering analyses have demonstrated that the Cornu helicopter could not have been capable of sustained flight.Nevertheless, in order to commemorate the centenary of his achievement, a replica of the helicopter was constructed by the "École supérieure des techniques aéronautiques et de construction automobile (ESTACA)" and presented to the Musée de l'Air et de l'Espace where it was placed on display on 15 December 2007.