Internal and External Heat Balance Characteristic of Helicopter Intermediate Reducer Casing based on CFD by Wenbin Pan, Wenchang Ge, Chunlei Wang, Yongsheng Ai

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Crack of a helicopter main rotor actuator attachment: failure analysis and lessons learned by L. Allegrucci, F. De Paolis, A. Coletta, M. Bernabei

Subjects: “…Helicopter…”
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Retracted: Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing by Advances in Materials Science and Engineering

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Determination of the Tail Unit Parameters of Ultralight Manned and Unmanned Helicopters at the Preliminary Design Stage by Vitaly Dudnik

Subjects: “…helicopter…”
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Research of the Influence of Helicopter Power Transmission System on Rotor Shimmy Modal and Experimental Verification by Lai Lingyun, Zhang Ruochen, Liu Yongzhi

“…Through the torsional vibration frequency test of helicopter rotor power transmission system,method and result correctness are verified.…”
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Clustering of Parameter Sensitivities: Examples from a Helicopter Airframe Model Updating Exercise by H. Shahverdi, C. Mares, W. Wang, J.E. Mottershead

“…In this paper, the results of a finite element model updating exercise on a Westland Lynx XZ649 helicopter are presented. For large and complex structures, such as a helicopter airframe, the finite element model represents the main tool for obtaining accurate models which could predict the sensitivities of responses to structural changes and optimisation of the vibration levels. …”
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Adaptive Sliding Mode Tracking Control for Unmanned Autonomous Helicopters Based on Neural Networks by Min Wan, Mou Chen, Kun Yan

“…In this paper, an adaptive sliding mode tracking control scheme is developed for the medium-scale unmanned autonomous helicopter with system uncertainties and external unknown disturbances. …”
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Aerodynamic Characteristics of Helicopter with Ducted Fan Tail Rotor in Hover under Low-Speed Crosswind by Nahyeon Roh, Sejong Oh, Donghun Park

“…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. …”
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Study on Electrical Parameter Matching of Piezoelectric Stack Periodic Strut for Helicopter Cabin Noise Control by Yue Hui-yu, Lu Yang, Dang Chong, Qin Yi-Fan, Ma Jin-chao, Zhu Tian-Yu

“…The gear meshing noise generated by the helicopter main reducer is one of the important sources of noise in the helicopter cabin. …”
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Atmospheric Observations over Central Japan Using a Helicopter: Measurements of Hydrogen Peroxide and Formaldehyde by Koichi Watanabe, Mei Jia Jin, Xiao Jing Song, Liu Yang, Kaede Genmoto, Yumeko Ichikawa, Yu Nagahori, Kanji Chimura, Haruka Nagamura

Subjects: “…Helicopter…”
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Research on the Vibration Characteristics of a Compounded Periodic Strut Used for Helicopter Cabin Noise Reduction by Yang Lu, Fengjiao Wang, Xunjun Ma

“…Considering that the helicopter vibration in practical applications is much more complex, further experimental investigations are carried out on a helicopter model, which generates prominent gear mesh tones similar to a real helicopter. …”
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Power Flow Analysis of the Main Reducing Gear of Coaxial Counter-rotating High-speed Helicopter by Zhang Shifei, Chen Peng, Wu Wenmin, Xia Fuchun, Liu Lei

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Robust Control for the Suspension Cable System of the Unmanned Helicopter with Sensor Fault under Complex Environment by Rong Mei

“…Aiming at the suspension cable system of an unmanned helicopter with sensor fault under complex environment, this paper studies the robust antiswing tolerant control scheme. …”
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A Study on Calculation Method and Influence Factor of Critical Speed of Helicopter Tail Drive Shaft by De Ni, Cheng Duan, Miaofei Cao, Jing Wei

Subjects: “…Helicopter…”
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Identification of Flap Motion Parameters for Vibration Reduction in Helicopter Rotors with Multiple Active Trailing Edge Flaps by Uğbreve;ur Dalli, Şcedilefaatdin Yüksel

“…It is calculated that using the developed active trailing edge rotor blade model, helicopter rotor blade vibrations can be reduced up to 36% of the nominal rotor blade vibrations.…”
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Study on the Tooth Profile Parameters Design Method of Crown Gear Coupling for Helicopter Tail Folding Device by Miaomiao Li, Zhao Zhang, Xi Wang, Shuai Liu, Rupeng Zhu

“…Shipboard helicopter folding technology can increase the number of helicopters parked on board aircraft carriers. …”
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Helicopter Autorotation Trajectory Planning Method Using Functional Tensor-Train-Based Dynamic Programming Algorithms by Yunjie Wang, Chen Jiang, Shuai Deng, Haowen Wang

“…Helicopter autorotation trajectory planning problems have been dealt within computationally expensive optimal control algorithms. …”
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Effect of the Simultaneous Variation in Blade Root Chord Length and Blade Taper on Helicopter Flight Control Effort by Tugrul Oktay, Firat Sal

“…In this study, the effect of simultaneous variation in blade root chord length and blade taper on the control effort of helicopter flight control system (i.e., FCS) of a helicopter is investigated. …”
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Assessing Methods to Measure Stem Diameter at Breast Height with High Pulse Density Helicopter Laser Scanning by Matthew J. Sumnall, Ivan Raigosa-Garcia, David R. Carter, Timothy J. Albaugh, Otávio C. Campoe, Rafael A. Rubilar, Bart Alexander, Christopher W. Cohrs, Rachel L. Cook

Subjects: “…helicopter…”
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An Analysis of the Gear Meshing Characteristics of the Main Planetary Gear Trains of Helicopters Undergoing Shafting Position Changes by Li Xuejun, Jiang Lingli, Hua Dengrong, Yin Daoxuan, Yang Dalian

“…The complex three-shaft three-reducer structural designs of helicopter transmission systems are prone to changes in the relative positions of shafting under the conditions of main rotor and tail rotor loads. …”
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