The benefit of civil aviation transportation can be improved by efficiently planning the safe continuous descending approach（CDA） operation path. Based on the analysis of CDA force balance state, along with the aircraft descent data and descent velocity profile, a dynamic CDA path generation model is constructed. The descent airspace is divided into horizontal and vertical intervals, and a certain height of the descent airspace is represented by a concentric ring structure to realize the 3D presentation of the CDA path generation model structure and to analyze the generation characteristics of the CDA path. On the basis of the difference region between standard descent airspace and terminal area descent airspace, a path range screening model is constructed, and its feasibility is verified by random simulation of CDA paths. The CDA path is screened by selecting descent path points. The optimal CDA paths are obtained through the restriction of the descent turning angle, the constraint of aircraft's force balance and the regulation of flight segment distance. Multiple optimal CDA paths can be obtained from different top of descent(TOD) points to achieve safe descent of multiple aircraft in the same terminal airspace.

dynamic continuous descending approach, descent path point, path screening, optimal path