Aerodynamics Analysis of Helicopter Rotor in Flight Test Using Strain Gauge Sensors [PDF]
SensorsThe acquisition of aerodynamic loads on helicopter rotors is fundamental to the study of helicopter performance optimization, structural design, flight control, and other aspects.
Shuaike Jiao, Jiahong Zheng
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Effect of low temperature on fatigue and crack propagation behavior of aeronautic aluminium alloy
Journal of Aeronautical Materials, 2021 Fatigue and crack growth tests were performed on two categories of the common aeronautic aluminum- alloys 2524-T3 and 7050-T7451 at ambient temperature of 25 ℃ and cryogenic temperature of –70 ℃, in order to investigate the fatigue and crack propagation ...
LIU Mudong
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Aerodynamic Modeling and Performance Analysis of Variable-Speed Coaxial Helicopter
Applied Sciences, 2022 In this paper, the variable-speed coaxial helicopter is modelled by the blade element method, non-uniform inflow method and empirical function method, and the aerodynamic performance analysis method is proposed.
Anan Xu, Fang Wang, Ming Chen, Liang Li
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Research Status and Advances in Cryogenic Crack Propagation of Aeronautic Aluminium-alloys
Hangkong gongcheng jinzhan, 2020 Aluminium-alloys are widely used in aeronautical engineering due to the advantages of high strength and easy processing. Low temperature inevitably occurs in aero-structures of aluminium-alloys, and cryogenic crack propagation of aeronautic aluminium ...
LIU Mudong
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Numerical Calculation Of Aerodynamic Loads Of Helicopter Rotor Using CFD / BET Method [PDF]
فناوری در مهندسی هوافضا, 2023 Considering the complexity of analyzing the phenomena affecting the aerodynamic performance of the main rotor helicopter and how to simulate the dynamic movements of the blade relative to the center of rotation, Using methods such as blade element theory
Mehdi Naderi Nezhad +2 more
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Application of pressure head theory to determine the aerodynamic characteristics of the helicopter main rotor [PDF]
E3S Web of Conferences, 2021 A method is proposed for calculating main aerodynamic characteristics of the main rotor of the Mi-26 helicopter: a lift, a reactive moment, a required power of the propulsion system, a speed of the inductive air flow, a throttle response coefficient, a ...
Reshenkin Andrey +3 more
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International Journal of Aerospace Engineering, 2020 The tail rotor of a helicopter operating under low-speed crosswind undergoes highly complex flow due to the interaction between the main rotor, fuselage, and tail rotor system.
Nahyeon Roh, Sejong Oh, Donghun Park
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X-Band Radar Cross-Section of Tandem Helicopter Based on Dynamic Analysis Approach
Sensors, 2021 In order to study the radar signature of a tandem helicopter in the X-band, a dynamic analysis approach (DAA) is presented to determine its radar cross-section (RCS) under different influence factors.
Zeyang Zhou, Jun Huang
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Modeling and Analysis of Rotor System Tolerance Based on Small Displacement Torsor
Hangkong gongcheng jinzhan, 2021 Helicopter vibration is closely related to manufacturing technology.Reducing manufacturing error can effectively reduce helicopter vibration.In order to analyze the geometric rotation accuracy of helicopter rotor system, the key tolerance on the assembly
LIU Zhuangzhuang, HAN Dong
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Variable-speed tail rotors for helicopters with variable-speed main rotors [PDF]
, 2017 Variable tail rotor speed is investigated as a method for reducing tail rotor power, and improving helicopter performance. A helicopter model able to predict the main rotor and tail rotor powers is presented, and the flight test data of the UH-60A ...
Barakos, G.N., Han, D.
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