Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Experimental Study of Wind Resistance and Power Consumption in MAVs
  with a Low-Speed Multi-Fan Wind System   This paper discusses a low-cost, open-source and open-hardware design and
performance evaluation of a low-speed, multi-fan wind system dedicated to micro
air vehicle (MAV) testing. In addition, a set of experiments with a flapping
wing MAV and rotorcraft is presented, demonstrating the capabilities of the
system and the properties of these different types of drones in response to
various types of wind. We performed two sets of experiments where a MAV is
flying into the wake of the fan system, gathering data about states, battery
voltage and current. Firstly, we focus on steady wind conditions with wind
speeds ranging from 0.5 m/s to 3.4 m/s. During the second set of experiments,
we introduce wind gusts, by periodically modulating the wind speed from 1.3 m/s
to 3.4 m/s with wind gust oscillations of 0.5 Hz, 0.25 Hz and 0.125 Hz. The
"Flapper" flapping wing MAV requires much larger pitch angles to counter wind
than the "CrazyFlie" quadrotor. This is due to the Flapper's larger wing
surface. In forward flight, its wings do provide extra lift, considerably
reducing the power consumption. In contrast, the CrazyFlie's power consumption
stays more constant for different wind speeds. The experiments with the varying
wind show a quicker gust response by the CrazyFlie compared with the Flapper
drone, but both their responses could be further improved. We expect that the
proposed wind gust system will provide a useful tool to the community to
achieve such improvements.

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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
12
The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: cond-mat