The Investigation on L1 Adaptive Control of the Tilt-Rotor Aircraft by Quanlong Chen, Shanyong Zhao, Ke Lu, Senkui Lu, Chunsheng Liu, Renliang Chen

“…The simulations of XV-15 tilt-rotor aircraft in helicopter mode and airplane mode are carried out. Then, the simulation of conversion mode is further carried out. …”
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An Efficient Third-Order Full-Discretization Method for Prediction of Regenerative Chatter Stability in Milling by Chao Huang, Wen-An Yang, Xulin Cai, Weichao Liu, YouPeng You

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Modeling and dynamic analysis of split torsion transmission system considering backlash and center distance errors by Jingwei Ding, Guanghu Jin

“…Abstract The split torque gear transmission holds significant potential for use in helicopter main reducer transmission systems due to its benefits of low noise, high power-to-weight ratio, and high reliability. …”
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Flight Dynamics Modeling and Dynamic Stability Analysis of Tilt-Rotor Aircraft by Ke Lu, Chunsheng Liu, Chunhua Li, Renliang Chen

“…The tilt-rotor aircraft has often been proposed as a means to increase the maximum speed of the conventional helicopter. The tilt-rotor aircraft consists of three primary flight modes that are the helicopter flight mode in low forward speed flight, airplane flight mode in high forward speed flight, and conversion flight mode. …”
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Dynamic Gust Load Analysis for Rotors by Yuting Dai, Linpeng Wang, Chao Yang, Xintan Zhang

“…Dynamic load of helicopter rotors due to gust directly affects the structural stress and flight performance for helicopters. …”
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Research of the POP-in and out Phenomenon of PCE Overrunning Clutch by Gai Xiaotao, Zhao Yongqiang, Liu Ming

“…The result could be used in the fault diagnosis of helicopter transmission system.…”
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Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears by Li Tianliang, Deng Mingming, He Zhiliang, He Haiyu, Tang Jinyuan

“…The tail gear reducer is an important component of the helicopter transmission system, and bearing preloading is a key link in the assembly of the tail gear reducer, which directly affects the stability, service life, and noise of the helicopter tail rotor. …”
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Damage Identification of Rotating Blades Based on Fuzzy C-Means and Frequency Response Function Curvature Methods by Ruize Cui, Zefeng Wang, Zhiguang Song

“…Rotor blades are one of the key components of helicopter. If the blades are damaged, the safety and reliability of the helicopter will be seriously affected. …”
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Defibrillation pad placement accuracy among Advanced Life Support instructors: A manikin-based observational study examining experience, self-evaluation, and actual performance by Dennie Wulterkens, Freek Coumou, Cornelis Slagt, Reinier A. Waalewijn, Lars Mommers

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100 Years of palaeo-research and its relevance for transformation and social cohesion in South Africa by Dipuo Kgotleng, Stella Basinyi, Wendy Black, Precious Chiwara-Maenzanise

“…To do this, we suggest meaningful and socially responsive practices such as equitable funding schemes, meaningful collaboration, and doing away with ‘helicopter research’. …”
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Characteristics and Demographics of Patients Requiring Emergent Air Medical by Anna Van Tuyl, Mark Quilon, Trevor Dudley, Olivia Grant, Neha Rao, Paul Barbara, David S. Kugler, Kaitlin C. McLoone-Cepin, Josh Greenstein, Barry Hahn

“…This study describes patients’ demographic and clinical characteristics who required emergent air medical transport. Helicopter transport is costly, and data from these patients may further help our understanding of who is transported by air and how important air transport is to the health system.…”
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Experimental Investigation of the Flow on a Simple Frigate Shape (SFS) by Rafael Bardera Mora

“…Helicopters operations on board ships require special procedures introducing additional limitations known as ship helicopter operational limitations (SHOLs) which are a priority for all navies. …”
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Active Design Technology of Pinion Surface for Aviation Spiral Bevel Gear based on Actual Condition by Chen Guangyan, Wang Jinhua, Cai Xiangwei

“…In actual conditions,because of the deformation of the box,bearings,shafts and gears in a helicopter reducer,the existence of installation error,manufacturing error and random error,the influence of temperature and vibration,the spiral bevel gear produces misalignment,and they destroyed the ideal meshing condition. …”
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Research of Steady State Temperature Field of Spiral Bevel Gear with Different Tooth Surface Structures by Hui Cheng, Zhouyang Li, Sanmin Wang

“…A thermal network model of the helicopter main reducer under high-speed and heavy-load conditions is established，and the law of the temperature field of the spiral bevel gear with different tooth surface structures is obtained. …”
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FATIGUE LIFE PREDICTION FOR ROW ANGULAR CONTACT BALL BEARINGS UNDER THERMO-MECHANICAL COUPLING BASED ON FEM by JIN Yan, LIU ShaoJun, JIANG YuXiao

“…The effect of thermo-mechanical coupling was considered in order to obtain the fatigue life of spilt torque transmission row angular contact ball bearings in helicopter. Based on the L-P fatigue life and Hertz contact theory,an mathematical model was established with the combination of Goodman formula,material P-S-N curves and EM modify rule. …”
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On the Effect of Functionally Graded Materials on Resonances of Rotating Beams by Arnaldo J. Mazzei Jr.

“…Some examples include helicopter blades, turbine blades and certain aerospace applications. …”
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Professional Applicator's Guide to Herbicides for Melaleuca Control by Kenneth A. Langeland, Michael J. Meisenburg

“…Four application methods, foliar, frill-and-girdle, cut stump, and basal (applied to the soil) are used depending on extent of the population and other factors. Helicopter, truck, or all terrain vehicle (atv)-mounted sprayers, backpack sprayers, and hand-held spray bottles, and dropper bottles are used for application of herbicide. …”
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Research on Adaptive Trajectory Tracking Algorithm for a Quadrotor Based on Backstepping and the Sigma-Pi Neural Network by Zhiming Chen, Kang Niu, Lei Li

“…In this paper, adaptive tracking control is applied to improve performances of an underactuated quadrotor helicopter with respect to attitude and position control. …”
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Professional Applicator's Guide to Herbicides for Melaleuca Control by Kenneth A. Langeland, Michael J. Meisenburg

“…Four application methods, foliar, frill-and-girdle, cut stump, and basal (applied to the soil) are used depending on extent of the population and other factors. Helicopter, truck, or all terrain vehicle (atv)-mounted sprayers, backpack sprayers, and hand-held spray bottles, and dropper bottles are used for application of herbicide. …”
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On the Effect of Functionally Graded Materials on Resonances of Rotating Beams by Arnaldo J. Mazzei Jr.

“…Some examples include helicopter blades, turbine blades and certain aerospace applications. …”
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