Results 81 to 90 of about 189,612 (149)

GENERATION OF AN ADVANCED HELICOPTER EXPERIMENTAL AERODYNAMIC DATABASE [PDF]

, 2009
The GOAHEAD-consortium was created in the frame of an EU-project in order to create an experimental database for the validation of 3D-CFD and comprehensive aeromechanics methods for the prediction of unsteady viscous flows including rotor dynamics for ...
Sheng, W., de Groot, Klaus, van der Wall, Berend G., Gibertini, G., Seraudie, A., Raffel, Markus, de Gegorio, Fabrizio   +6 more
core  

Preliminary design of small distributed ducted electric tail rotor helicopter

Hangkong gongcheng jinzhan
To address the issues of complex transmission structure, low fault tolerance, and poor safety in traditional single-rotor helicopters with tail rotors(such as high accident rates due to tail rotor transmission system failures and collisions easily ...
LIU Chaofan, DENG Haoxuan, WANG Liangquan   +2 more
doaj   +1 more source

Numerical simulation of the coupled flow field in helicopter/tanker interaction

Kongqi donglixue xuebao
To investigate the aerodynamic interference caused by tanker wake on helicopter during aerial refueling, a numerical simulation method for the coupled flow field of tanker and helicopter based on the Reynolds-Averaged Navier-Stokes (RANS) equations is ...
Xikang Dai, Zhao Cui, Yongjie Shi, Guohua Xu   +3 more
doaj   +1 more source

HELICOPTER ROTOR DESIGN

Journal of Industrial Design and Engineering Graphics, 2011
The objective of this paper is to analyze the role of helicopter rotor, to classify them by type, and to imagine new types of helicopter rotors that can equip future helicopters.
IONESCU Cristian Andrei
doaj  

Development of an Active Flap Rotor Model [PDF]

, 2004
The research organizations ONERA and DLR initiated a common programme supported by Eurocopter (EC) and Eurocopter Deutschland (ECD) as industry partners within the Active Blade Concept (ABC).
Höfinger, Marc T., Leconte, Philippe
core  

Numerical Investigation of Vibration Reduction Through IBC for a 20to Helicopter Rotor Model [PDF]

, 2002
This paper presents theoretical results of vibration reduction through IBC (Individual Blade Control) for a 20to helicopter rotor model which are based on numerical computations.
van der Wall, Berend G., Auspitzer, Thomas, Höfinger, Marc T., Fürst, Daniel   +3 more
core  

Application of Artificial Neural Networks to a Model of a Helicopter Rotor Blade for Damage Identification in Realistic Load Conditions. [PDF]

Sensors (Basel)
Ballarin P, Sala G, Macchi M, Roda I, Baldi A, Airoldi A.   +5 more
europepmc   +1 more source

Torque Measurement of Coupled Multi-Mechanism Connections for Vertical Replenishment of External Cargo on Shipborne Helicopters. [PDF]

Sensors (Basel)
Ma K, Wang H, Liu M, Leung CM.
europepmc   +1 more source

Research on Tail Rotor Load Test Flight Technology for Helicopters Based on Strain Sensor Measurement. [PDF]

Sensors (Basel)
Jiao S, Zheng J, Li K, Hu X.
europepmc   +1 more source

In Situ Dynamic Measurement of Blade Collision Warning Parameters for Coaxial Twin-Rotor Helicopters. [PDF]

Sensors (Basel)
Zheng W, Qiu Z.
europepmc   +1 more source