Results 71 to 80 of about 1,267 (185)
INTERFERENCE BETWEEN HELICOPTER AND ITS SURROUNDINGS, EXPERIMENTAL AND NUMERICAL ANALYSIS
TASK Quarterly, 2009 The paper describes the phenomenon of the occurrence of aerodynamic interference between a helicopter and an object in its near vicinity. Such situations occur during rescue missions as well as during police and military operations when the helicopter ...
TOMASZ ŁUSIAK +2 more
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A VORTEX MODEL OF A HELICOPTER ROTOR
INCAS BULLETIN, 2009 A vortex model of a helicopter rotor is presented. Each blade of the rotor has three degrees of freedom: flapping, lagging and feathering. The motions after each degree of freedom are also known for all blades. The blade is modelled as a thin vortex surface. The wakes are free fluid surfaces.
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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
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AerospaceActive rotors with trailing-edge flaps (TEFs) are a promising method applied to the main-rotor blades of the helicopter for vibration suppression. For active rotors, both the TEF actuator and the corresponding deflection control law determine their ...
Xiancheng Gu +3 more
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Preliminary design of small distributed ducted electric tail rotor helicopter
Hangkong gongcheng jinzhanTo 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 +2 more
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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 +5 more
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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
Nonlinear controller design for unmanned helicopter flight platform. [PDF]
Sci RepRuchun W.
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Corkscrew Convexity- Helicopter Rotors
Where control theory overstepped into physics and engineering without proper synthesis.
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