Journal
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
Volume 2017, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2017/1823056
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Funding
- AEROARMS project - European Commission [H2020-2014-644271]
- AEROMAIN project - Spanish Ministerio de Economia, Industria y Competitividad [DPI2014-59383-C2-1-R]
- AEROCROS project - Spanish Ministerio de Economia, Industria y Competitividad [DPI2015-71524-R]
- FPU Programme - Spanish Ministerio de Educacion, Cultura y Deporte
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This paper analyzes the ground effect in multirotors, that is, the change in the thrust generated by the rotors when flying close to the ground due to the interaction of the rotor airflow with the ground surface. This effect is well known in single-rotor helicopters but has been assumed erroneously to be similar for multirotors in many cases in the literature. In this paper, the ground effect for multirotors is characterized with experimental tests in several cases and the partial ground effect, a situation in which one or some of the rotors of the multirotor (but not all) are under the ground effect, is also characterized. The influence of the different cases of ground effect in multirotor control is then studied with several control approaches in simulation and validated with experiments in a test bench and with outdoor flights.
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