Results 1 to 10 of about 191,773 (209)
Parameter Analysis of Active Flap Control for Rotor Aerodynamic Control and Design
International Journal of Aerospace Engineering, 2023 Active rotor control of helicopters is the future development direction, and active flap control (AFC) is one of the most promising technologies. However, the numerical simulation of an AFC rotor is challenging.
Runze Xia +3 more
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Fractal and Fractional, 2021 The wear problems are vital to the planetary roller screw mechanism (PRSM) as they have a great influence on transmission accuracy, working efficiency, and service life.
Junjie Meng +5 more
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Lubricants, 2022 Misalignments are unavoidable in most applications of the planetary roller screw mechanism (PRSM) due to many potential causes. However, the effect of screw misalignments on the contact characteristics for the PRSM have not been thoroughly investigated ...
Junjie Meng +5 more
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Research progress of helicopter noise suppression technology based on materials/structures
Journal of Aeronautical Materials, 2022 Helicopter has achieved rapid development and wide application in various fields, due to its unique flight mode. However, the noise is also a particular feature of the helicopter, which people cannot bear without protection.
LI Wenzhi, CAO Yaoqin, HE Zhiping
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Examining the stability derivatives of a compound helicopter [PDF]
, 2016 Some helicopter manufacturers are exploring the compound helicopter design as it could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft.
Ferguson, Kevin, Thomson, Douglas
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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
core +1 more source
A tale of two helicopters [PDF]
Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2003) (Cat. No.03CH37453), 2004 This paper discusses similarities and differences in autonomous helicopters developed at USC and CSIRO. The most significant differences are in the accuracy and sample rate of the sensor systems used for control. The USC vehicle, like a number of others, makes use of a sensor suite that costs an order of magnitude more than the vehicle.
Srikanth Saripalli +4 more
openaire +3 more sources
An integrated methodology to assess the operational and environmental performance of a conceptual regenerative helicopter [PDF]
, 2015 This paper aims to present an integrated multidisciplinary simulation framework, deployed for the comprehensive assessment of combined helicopter powerplant systems at mission level. Analytical evaluations of existing and conceptual regenerative engine
Ali, Fakhre +2 more
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A Novel Active Vibration Control Method for Helicopter Fuselages Based on Diffusion Cooperation
International Journal of Aerospace Engineering, 2023 Against the background of low-frequency vibration control for a helicopter fuselage in flight, active control of structural response (ACSR) has been employed for vibration control design.
Jingliang Li, Yang Lu
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Modelling the helicopter rotor aerodynamics at forward flight with free wake model and URANS method
Aviation, 2020 The presented work is dedicated to the numerical study of the aerodynamic characteristics of the helicopter rotor. Two approaches to modeling of the rotor are applied: the free wake model developed by the Authors with using steady airfoil characteristics
Yuri Ignatkin +3 more
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