Results 21 to 30 of about 189,612 (149)
Analysis of Rotor/Propeller/Fuselage Interaction Characteristics of High-speed Helicopter
Hangkong gongcheng jinzhan, 2020 The study on aerodynamic characteristics of high-speed helicopter with double-thrust-propeller can provide the reference for the design and aerodynamic optimization of high-speed helicopter.
SHEN Suiyuan +4 more
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A New Algorithm on Automatic Trimming for Helicopter Rotor Aerodynamic Loads
Aerospace, 2023 In order to simulate the flight state of the helicopter effectively, it is necessary to trim the helicopter during the forward flight in a wind tunnel test.
Xinfan Yin +5 more
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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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Hardware-in-the-Loop simulation algorithm for helicopter rotor time-varying echo signals
Systems Science & Control Engineering, 2021 The inherent micro-Doppler (m-D) feature of helicopter rotor echoes has been widely used in signal detection and identification. To meet the high accuracy and real-time performance requirements of the hardware-in-the-loop (HIL) simulation, this paper ...
Shihong Chen
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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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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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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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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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