Results 21 to 30 of about 587,209 (299)
Numerical Study on Tandem-Rotor Autorotation in Forward Flight
Aerospace, 2022 This work presents a systematic approach to analyzing the aerodynamic characteristics of tandem rotor forward autorotation considering rotor-to-rotor interference.
Jiayu Wen +3 more
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Biologically Inspired Feedback Design for Drosophila Flight [PDF]
, 2007 We use a biologically motivated model of the Drosophila's flight mechanics and sensor processing to design a feedback control scheme to regulate forward flight.
Dickinson, Michael H. +6 more
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Main rotor-tail rotor intraction and its implications for helicopter directional control [PDF]
, 2008 Aerodynamic interference between the main and tail rotor can have a strong negative influence on the flight mechanics of a conventional helicopter. Significant unsteadiness in the tail rotor loading is encountered under certain flight conditions, but the
Brown, R.E., Fletcher, Timothy M.
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Aerodynamic Interference Model for Multirotors in Forward Flight [PDF]
Journal of Aircraft, 2020 No abstract available.
Han, Dong, Barakos, George N.
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Kinematics Measurement and Power Requirements of Fruitflies at Various Flight Speeds
Energies, 2020 Energy expenditure is a critical characteristic in evaluating the flight performance of flying insects. To investigate how the energy cost of small-sized insects varies with flight speed, we measured the detailed wing and body kinematics in the full ...
Hao Jie Zhu, Mao Sun
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Optimised Tuning of a PID-Based Flight Controller for a Medium-Scale Rotorcraft
Algorithms, 2021 This paper presents the parameter optimisation of the flight control system of a singlerotor medium-scale rotorcraft. The six degrees-of-freedom (DOF) nonlinear mathematical model of the rotorcraft is developed.
Lindokuhle J. Mpanza +1 more
doaj +1 more source
TASK Quarterly, 2015 The paper presents the results of a numerical simulation of the flow and acoustic field generated by the PZL W3-A “Sokół” (Falcon) helicopter main rotor in high-speed forward flight conditions based on the URANS approach and the chimera overlapping ...
OSKAR SZULC +4 more
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The role of visual and mechanosensory cues in structuring forward flight in Drosophila melanogaster [PDF]
, 2007 It has long been known that many flying insects use visual cues to orient with respect to the wind and to control their groundspeed in the face of varying wind conditions.
Budick, Seth A. +2 more
core +1 more source
Four-Winged Flapping Flyer in Forward Flight [PDF]
, 2015 We study experimentally a four-winged flapping flyer with chord-wise flexible wings in a self-propelled setup. For a given physical configuration of the flyer (i.e. fixed distance between the forewing and hindwing pairs and fixed wing flexibility), we explore the kinematic parameter space constituted by the flapping frequency and the forewing-hindwing ...
Godoy-Diana, Ramiro +4 more
openaire +2 more sources
A comparison of coaxial and conventional rotor performance [PDF]
, 2009 The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
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