Since many of the seed individuals are extremely aerodynamically
inefficient (only 2 out of 20 yielded >0 rpm), the GA
is run for two further generations before the model-augmented
approach is used for comparison. The initial pilot results from
an experiment with the canonical GA and SGA are presented
in Fig. 6, which shows the maximum rotation speed achieved
by the fittest individual in each generation. The GA and modelassisted
approach identify increasingly efficient aerodynamic
designs, and the SGA shows improved performance (1176 rpm
versus 1096 rpm after 100 fabrications). The fittest individuals
produced by the GA and SGA each generation are shown in
Figs. 7 and 8, respectively.