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Aerospace 2018, 5(2), 42; doi:10.3390/aerospace5020042

Flight Load Assessment for Light Aircraft Landing Trajectories in Windy Atmosphere and Near Wind Farms

1
Department of Industrial Engineering, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy
2
Fraunhofer Institute for Wind Energy Systems, IWES, Küpkersweg 70, 26129 Oldenburg, Germany
*
Author to whom correspondence should be addressed.
Received: 16 February 2018 / Revised: 4 April 2018 / Accepted: 5 April 2018 / Published: 10 April 2018
(This article belongs to the Collection Feature Papers in Aerospace)
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Abstract

This work focuses on the wake encounter problem occurring when a light, or very light, aircraft flies through or nearby a wind turbine wake. The dependency of the aircraft normal load factor on the distance from the turbine rotor in various flight and environmental conditions is quantified. For this research, a framework of software applications has been developed for generating and controlling a population of flight simulation scenarios in presence of assigned wind and turbulence fields. The JSBSim flight dynamics model makes use of several autopilot systems for simulating a realistic pilot behavior during navigation. The wind distribution, calculated with OpenFOAM, is a separate input for the dynamic model and is considered frozen during each flight simulation. The aircraft normal load factor during wake encounters is monitored at different distances from the rotor, aircraft speeds, rates of descent and crossing angles. Based on these figures, some preliminary guidelines and recommendations on safe encounter distances are provided for general aviation aircraft, with considerations on pilot comfort and flight safety. These are needed, for instance, when an accident risk assessment study is required for flight in proximity of aeolic parks. A link to the GitHub code repository is provided. View Full-Text
Keywords: aircraft flight loads; flight dynamics; wind farm; wind turbine wake; CFD aircraft flight loads; flight dynamics; wind farm; wind turbine wake; CFD
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Varriale, C.; De Marco, A.; Daniele, E.; Schmidt, J.; Stoevesandt, B. Flight Load Assessment for Light Aircraft Landing Trajectories in Windy Atmosphere and Near Wind Farms. Aerospace 2018, 5, 42.

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