The results show that the best effect of glide extended-rang is obtained with the adoption of maximum lift-drag ratio slide.

The lift coefficient,drag coefficient and lift-drag ratio were obtained at a series of angles of attack, starting at 0°up to 16°at 2° intervals respectively.

Several conclusions can be drawn: Firstly,the maximal lift-drag ratio Kmax=3.

This article researched the aerodynamic configuration design of the glide/skip trans-atmospheric vehicle(TAV) based on waverider with high lift-to-drag ratio.

From the optimization analysis,the strategy to guarantee maximum glide distance is equivalent to keep maximum lift-to-drag ratio in the flight.

The nonlinear simplicial method with punish function was used to optimize the osculating-cone waverider with lift-to-drag ratio as the objective function.

Increasing the lift drag ratio of turbine blade is an effective way for improving turbine s aerodynamic characteristics.

For the target drone without sideslip,Gurney flap could enhance lift at medium and small angles of attack,and decrease the angle of attack where lift to drag ratio reaches maximum value.

After design,the lift to drag ratio can be improved with the lift constraint.

Research about synchronous pitch-controlled wind turbine has found its shortage,put forward the conception that to keep the blade always in the state of optimal ratio of lift over drag,the turbine must has one asynchronous pitch-control system.