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Experiments in Fluids

Erschienen in:

01.04.2019 | Research Article

Low Reynolds number multirotor aerodynamic wake interactions

verfasst von: Dhwanil Shukla, Narayanan Komerath

Erschienen in: Experiments in Fluids | Ausgabe 4/2019

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Abstract

Multirotor vertical take-off and landing uninhabited aerial vehicles can be built in numerous configurations. This makes them a preferred choice of platform for a wide range of commercial applications. Rotor–rotor aerodynamic interactions play an important role in the performance of a UAV. Bi-rotor configurations are studied experimentally using high-speed stereo particle image velocimetry and performance measurements. Important multirotor wake interaction phenomena are identified. Two kinds of vortex–vortex, four kinds of vortex–vortex sheet, and two kinds of vortex–hub interactions are discovered at different sub-ranges of the tested configurations. The primary building components of multirotor downwash are recognized by observing the mean rotor inflow and outflow velocity profiles. Comparison of performance trends with high Reynolds number rotor data shows better than expected figure of merit for the upper rotor and the combined system.

Graphical abstract

Vorheriger Artikel Spreading of low-viscous liquids on a stationary and a moving surface

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Titel: Low Reynolds number multirotor aerodynamic wake interactions
verfasst von: Dhwanil Shukla
Narayanan Komerath
Publikationsdatum: 01.04.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: Experiments in Fluids / Ausgabe 4/2019
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-019-2724-3

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Abstract

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