Geometry Design of Coaxial Rigid Rotor in High-Speed Forward Flight

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijae/volume-2020/6650375/figures/6650375.fig.0031a.svgz" name="6650375.fig.0031a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Time history forward the rotor plane</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijae/volume-2020/6650375/figures/6650375.fig.0031b.svgz" name="6650375.fig.0031b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Directivity patterns in the rotor disc</td></tr></table>

<div>Acoustic characteristics of baseline rectangular blade and optimized blade.</div>

International Journal of Aerospace Engineering

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Figure 31

Figure 31: Geometry Design of Coaxial Rigid Rotor in High-Speed Forward Flight 