From flapping to heaving: A numerical study of wings in forward flight
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2018.09.006
Abstract: Abstract Direct Numerical Simulations of the flow around a pair of flapping wings are presented. The wings are flying in forward flight at a Reynolds number R e = 500 , flapping at a reduced… read more here.
Keywords: forward flight; radius flapping; angle attack; flapping heaving ... See more keywords
Forward flight stability in a drone-fly
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-58762-5
Abstract: Previous studies on forward flight stability in insects are for low to medium flight-speeds. In the present work, we investigated the stability problem for the full range of flight speeds (0–8.6 m/s) of a drone-fly. Our… read more here.
Keywords: flight stability; forward flight; flight speeds; flight ... See more keywords
Analysis of Ground Effect for Small-Scale UAVs in Forward Flight
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Robotics and Automation Letters"
DOI: 10.1109/lra.2019.2929993
Abstract: The letter investigates how the behavior of small-scale unmanned aerial vehicles (UAVs) is influenced by the system's close proximity to the ground/rigid surfaces both at hover and in forward flight. We perform an extensive experimental… read more here.
Keywords: ground; small scale; forward flight; ground effect ... See more keywords
Numerical studies on modeling the near- and far-field wake vortex of a quadrotor in forward flight
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/09544100211029074
Abstract: The operation of Unmanned Aerial Systems (UAS) is expected to keep increasing in the future with its rapid advancement and ever-expanding applications. One of the safety measures that need to be put into place for… read more here.
Keywords: field flow; wake vortex; forward flight; simulation ... See more keywords
Adjoint-Based Aeroacoustic Design-Optimization of Flexible Rotors in Forward Flight
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The American Helicopter Society"
DOI: 10.4050/jahs.62.042005
Abstract: This paper presents the development and application of a time-dependent adjoint-based method for aeroacoustic design optimization of flexible helicopter rotors in forward flight. The rotor noise signature at a farfield observer is computed with the… read more here.
Keywords: forward flight; adjoint based; aeroacoustic design; design optimization ... See more keywords
Bell 412 System Identification and Model Fidelity Assessment for Hover and Forward Flight
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The American Helicopter Society"
DOI: 10.4050/jahs.66.012004
Abstract: Frequency domain system identification of higher order models for the Bell 412 helicopter was performed. First, a frequency response database was derived from flight-test data. For hover, a combination of sweep and 2311-multistep maneuvers had… read more here.
Keywords: forward flight; model; system identification; flight ... See more keywords