Structural Optimization of the Aircraft NACA Inlet Based on BP Neural Networks and Genetic Algorithms

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">Before optimization</td><td class="align_center">After optimization</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Throat aspect ratio</td><td class="align_center">3</td><td class="align_center">2.507</td></tr><tr><td class="align_left">Slope angle (°)</td><td class="align_center">7</td><td class="align_center">6.813</td></tr><tr><td class="align_left">Opening length (mm)</td><td class="align_center">1800</td><td class="align_center">1781.840</td></tr><tr><td class="align_left">Mass flow rate (kg·s<sup>-1</sup>)</td><td class="align_center">2.574</td><td class="align_center">2.506</td></tr><tr><td class="align_left">Fuel penalty (kg)</td><td class="align_center">772.682 Et</td><td class="align_center">698.087 Et</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of parameters before and after optimization.</div>

International Journal of Aerospace Engineering

tab5

Table 5

Table 5: Structural Optimization of the Aircraft NACA Inlet Based on BP Neural Networks and Genetic Algorithms 