The Hovering Stability of the Egretta Tail-Sitter VTOL UAV
International Journal of Aerospace Engineering, 2022 Vertical takeoff and landing (VTOL) capability has extended the application of unmanned aerial vehicle (UAV) significantly. In this paper, simulation modeling and flight test were employed to investigate the hovering stability of a tail-sitter UAV named ...
Hao Wang +5 more
doaj +2 more sources
Hydrodynamic hovering of swimming bacteria above surfaces [PDF]
Physical Review ResearchFlagellated bacteria are hydrodynamically attracted to rigid walls, yet past work shows a “hovering” state where they swim stably at a finite height above surfaces. We use numerics and theory to reveal the physical origin of hovering.
Pyae Hein Htet, Debasish Das, Eric Lauga
doaj +8 more sources
Investigation into the hovering flight dynamics and control of a flapping wing micro air vehicle [PDF]
, 2003 The hovering flight of a micro air vehicle was investigated. Various flight control concepts, inspired by observation of insect and bird flight, were investigated in some detail. The concepts make use of flap frequency or phase between the flap and pitch
Loh, K.
core +7 more sources
Efficacy of IncobotulinumtoxinA (BoNT-A) Injections in Upper Limb Task-Specific and Position-Dependent Tremors. [PDF]
Mov Disord Clin PractAbstract Background Task‐specific tremors (TST) and position‐dependent tremors (PDT) are rare isolated focal tremors that impair fine motor control with few effective treatment options. Although botulinum neurotoxin (BoNT) is effective in other tremor syndromes, its evidence in these tremor subtypes remains limited.
Boyd EK, Jiang S, Shi RB, Rizek P.
europepmc +2 more sources
Influence of wing kinematics on aerodynamic performance in hovering insect flight [PDF]
, 2007 The influence of different wing kinematic models on the aerodynamic performance of a hovering insect is investigated by means of two-dimensional time-dependent Navier–Stokes simulations.
Bijl, H. +8 more
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Numerical Prediction of Unsteady Aerodynamics of a Ducted Fan Unmanned Aerial Vehicle in Hovering
Aerospace, 2022 Recently, ducted fan unmanned aerial vehicles (UAVs) have attracted considerable attention due to their potential for application in both civil and military missions.
Hongming Cai +2 more
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Hovering of coaxial Trirotor helicopter constructed with coaxial mechanism driven by a motor
Nihon Kikai Gakkai ronbunshu, 2014 This paper proposes a coaxial trirotor helicopter constructed with coaxial mechanism driven by one motor. There two types of trirotor unmanned aerial vehicles (UAVs) are existed.
Yoshihiro TAKITA +2 more
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Hovering and attitude control of a quadcopter System modelling and control [PDF]
, 2022 openModellizzazione delle equazioni non lineari del moto che regolano la dinamica di un quadricottero nello spazio per mezzo del metodo Newtoniano, linearizzazione e controllo in posizione relativamente ad una condizione di volo stazionario ad assetto ...
VALERIO ANTONI, MANUEL
core
A Numerical Analysis of Dynamic Flight Stability of Hawkmoth Hovering
Journal of Biomechanical Science and Engineering, 2009 A numerical analysis of dynamic flight stability of a hovering hawkmoth is presented. A computational fluid dynamic (CFD) method is used to simulate the unsteady flow about a realistic hawkmoth model and to compute the aerodynamic derivatives of the ...
Na GAO, Hikaru AONO, Hao LIU
doaj +1 more source
Drones, 2019 In this work, seven wings inspired from insects’ wings, including those inspired by the bumblebee, cicada, cranefly, fruitfly, hawkmoth, honeybee, and twisted parasite, are patterned and analyzed in FlapSim software in forward and hovering flight ...
G. Throneberry +2 more
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