Results 11 to 20 of about 66,325 (272)
Active twist of model rotor blades with D-spar design [PDF]
Transport, 2007 The design methodology based on the planning of experiments and response surface technique has been developed for an optimum placement of Macro Fiber Composite (MFC) actuators in the helicopter rotor blades.
A. Kovalovs, E. Barkanov, S. Gluhihs
doaj +3 more sources
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
doaj +1 more source
Modelling of Flow Characteristics of Main Rotor with Elliptical Root Section in Hover Mode [PDF]
E3S Web of Conferences, 2023 The modelling of a helicopter main rotor flow field in hover regime is being considered. The aerodynamic and aeroacoustics characteristics of two rotor models with different blade root geometries are compared.
Kusyumov Sergey +4 more
doaj +1 more source
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
doaj +1 more source
On the dynamic response of a hingeless helicopter rotor blade
, 2021 The intense nature of the aerodynamic environment surrounding a helicopter can cause excessive deflection of the rotor blades. Therefore, proper prediction of the aerodynamic loading and the blade deflection are necessary for monitoring the blade health.
Pratik Sarker, Uttam K. Chakravarty
semanticscholar +1 more source
Helicopter performance enhancement by alleviating retreating blade stall using active flow control
Scientific African, 2023 In this study, a model was created numerically to study the effect of active flow control on helicopter blade to improve the retreating blade stall. Active flow control is applied to helicopter blades to improve retreating blade stall along with the ...
Tarek Mokhtar Tawfik Soltan +1 more
doaj +1 more source
IEEE Access, 2022 For the typical multi-component periodic micro-Doppler signal parameter estimation, a helicopter rotor feature extraction method based on flicker phenomenon and phase compensation is proposed in this paper.
Saiqiang Xia +6 more
doaj +1 more source
Journal of Fluids and Structures, 2021 Combined variable rotor speed and active blade twist helicopter technologies have the potential to reduce the environmental and acoustic impact of modern rotorcraft. This paper explores the aeroacoustics, environmental and ground noise impact of combined
Stavros Vouros +3 more
semanticscholar +1 more source
Chord Morphing for Helicopter Rotor Blades [PDF]
ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, 2019 Abstract Since helicopter rotors have different demands from different flight stats, the final design is always a compromise between flight stats such as hover and fast forward flight. Two of the design parameters are twist and chord length.
Riemenschneider, Johannes +3 more
openaire +2 more sources
Helicopter performance improvement by variable rotor speed and variable blade twist
Aerospace Science and Technology, 2016 Dong Han, V. Pastrikakis, G. Barakos
semanticscholar +3 more sources