Publicação: Aeroacoustic effect generated by the interaction rotor-airframe in an unmanned aerial vehicle's structure
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CNPQ::ENGENHARIAS::ENGENHARIA AEROESPACIAL::SISTEMAS AEROESPACIAIS::HOVERCRAFT
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As the years go by, UAVs become more accessible, their operation properties
improve and companies like Embraer get closer and closer to apply this type of
vehicles for their operations and become their future product. These vehicles are
evolving fast and the possibility of skies being filled with buzzing multi-copters has
raised major concerns about security, health and control. For this reason, a bast
number of researches in the area of Aeroacoustics, need to be done to solve major
problems as mentioned before, including problems such noise pollution in our modern
society. Knowing this, the present work is dedicated to study a possible source of noise
in UAVs, known as the interaction rotor airframe, which causes a tonal noise given by
pressure fluctuations between these components. As a possible solution and based
on some studies, were projected and manufactured three different airframes; each one
with a distinctive noise reduction concept. To test these concepts an experimental
process was conducted using a high definition microphone, as a data acquisition
system to measure the different pressure levels through a determinate period of time
and through a code in Matlab interpret and plot the signals as a A weighting signal
to identify a possible noise reduction in each case in the human acoustic domain.
Abstract
Palavras-chave
UAVS, Aerocoustics, noise pollution, noise, rotor-airframe
Citação
SANCHEZ, Gino Rodrigo Lavagnino . Aeroacoustic effect generated by the interaction rotor airframe in an unmanned aerial vehicle s structure. 107 f. Bachelor’s Thesis (Aeronautical Engineering) -
Federal University of Uberlândia, Uberlândia Brazil. 2021