Landing Trajectory Generation and Energy Optimization for Unmanned Lunar Mission

Figure 4

Three-dimensional flight path comparison between numerical and analytical solution for different crossing angle. (a) Crossing angle = 5.0 deg. (b) Crossing angle = 10.0 deg. (c) Crossing angle = 15.0 deg. (d) Crossing angle = 20.0 deg.

(a)

(b)

(c)

(d)