Results 21 to 30 of about 30,707 (232)
Flight Mechanics Modeling of the New Configuration Tilt-rotor
Hangkong gongcheng jinzhan, 2019 The flight mechanical model of tilt-rotor UAV is the basis of designing flight control rate and analyzing flight characteristics.Based on the engineering reality, the nonlinear flight mechanics model of a new configuration tilt-rotor UAV is set up ...
Zhang Lian +3 more
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Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016 The paper deals with the non-contact method of monitoring the integrity of the main rotor blades of a helicopter. The available methods of monitoring the integrity of the main rotor blades of the helicopter are labor-intensive to implement, their ...
A. I. Danilin, S. V. Zhukov, M. S. Popov
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Research on Calculation Method for Acoustic Scattering of Helicopter Noise
Xibei Gongye Daxue Xuebao, 2020 A new calculation method of helicopter rotor/fuselage acoustic scattering is developed. Firstly, a CFD analysis model is developed to simulate flow field of the rotor, which is based on the motional embedded grid system and RANS equations, and provides ...
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An Analytical Method for Coaxial Helicopter Ground Resonance [PDF]
MATEC Web of Conferences, 2020 A time-frequency analytical method is presented to analyze physical mechanism of coaxial helicopter ground resonance. Eigenvalue calculation and numerical integration of disturbance equations of motions are used to obtain modal characters and time-domain
Liu Xiangyi +4 more
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Fracture fault analysis of tail rotor on a helicopter
Hangkong gongcheng jinzhan, 2023 Finding out the reason of the fracture fault of tail rotor on a helicopter is of practical significance for using and maintaining the helicopter and is of significant reference for improving safety of new type helicopter. The fracture fault of tail rotor
HOU Bo +3 more
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Maneuverability assessment of a compound helicopter configuration [PDF]
, 2016 The compound helicopter design could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft. The main benefit of the compound helicopter is its ability to reach speeds that significantly surpass those of the ...
Ferguson, Kevin, Thomson, Douglas
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Quad-Rotor Helicopter Autonomous Navigation Based on Vanishing Point Algorithm
Journal of Applied Mathematics, 2014 Quad-rotor helicopter is becoming popular increasingly as they can well implement many flight missions in more challenging environments, with lower risk of damaging itself and its surroundings.
Jialiang Wang +5 more
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Optimal design of fixed-pitch coaxial-rotor helicopter by using Particle Swarm Optimization
Nihon Kikai Gakkai ronbunshu, 2016 In this study, the optimal mechanical design method for fixed-pitch coaxial-rotor helicopter is proposed. The fixed-pitch coaxial-rotor helicopter has several advantages compared with other type helicopters.
Masahiro TATSUNO +3 more
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Engineering Applications of Computational Fluid Mechanics, 2021 The coupled rotor/ship flowfield is investigated using the Navier–Stokes solver when the helicopter rotor hovers in the ship’s airwake. The solid rotor model (SRM) and virtual rotor model (VRM) are employed, considering the different types of rotor ...
Zhao Dingxuan +3 more
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Modelling and simulation of a quad-rotor helicopter [PDF]
, 2012 Small size quad-rotor helicopters are often used due to the simplicity of their construction and maintenance, their ability to hover and also to take-off and land vertically.
Bousbaine, Amar +2 more
core +2 more sources