A SAFETY SYSTEM, A HELICOPTER FITTED WITH SUCH A SYSTEM, AND A SAFETY METHOD SEEKING TO AVOID AN UNDESIRABLE EVENT

摘要

The present invention relates to a safety system (4) to avoid an undesirable event when flying a helicopter (1). According to the invention, this system is remarkable in that it comprises a calculator (8) which makes it possible, at any instant t, to generate a three-dimensional envelope (2) of foldback trajectories (3) of the helicopter ( 1), said envelope (2) being obtained by calculating, at time t, a set of positions attainable by the helicopter (1) during a predetermined flight duration, said computer (8) being previously parameterized with relative data the helicopter's flight capabilities (1) including at least one of the following capabilities: maximum velocities and accelerations in all three directions of space, minimum rotational radius of yaw, dive and / or nose-up, maximum mass of the load transported and maximum loads.