The invention discloses a design method for an approach landing track of an unpowered aircraft. When the flareout landing track is designed, assumed that the height of a flareout landing
initial point is known, then, expressions of all track parameters are derived according to a geometrical relationship, and the flareout landing track is designed. In order to design the ideal flareout landing track, the proper height of the flareout landing
initial point is found out through an optimization
algorithm, track deduction is conducted along the landing track, and therefore the grounding
dynamic pressure becomes the ideal grounding
dynamic pressure. A deep glide landing track and the ideal flareout landing track form the optimal approach landing track. According to the design method, the
aerodynamic force and the aerodynamic moment borne by the aircraft are taken into consideration, and the influences on the design of the landing track of aerodynamic data of deflecting of an aerodynamic control plane and putting of an undercarriage are also taken into consideration. The design method for the approach landing track is simple in principle,
computer software is adopted for conducting optimization design, and the design efficiency is improved.