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![PDF] AEROACOUSTIC COMPUTATIONS OF A COUNTER-ROTATING FAN | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/8f8281163cf79a57e6ff30de6f07a20ae4db82bb/7-Figure6-1.png "PDF] AEROACOUSTIC COMPUTATIONS OF A COUNTER-ROTATING FAN | Semantic Scholar")
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![The contra-rotating fan [16] | Download Scientific Diagram](https://www.researchgate.net/profile/Arvind-Gangoli-Rao/publication/303820721/figure/fig4/AS:370089548369923@1465247632850/The-contra-rotating-fan-16.png "The contra-rotating fan [16] | Download Scientific Diagram")
The contra-rotating fan [16] | Download Scientific Diagram
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