Results 41 to 50 of about 231,082 (310)
CALCULATION OF LOADS ON THE CONTROLS WITH HELICOPTER MAIN ROTOR OF SINGLE-ROTOR DESIGN
Научный вестник МГТУ ГА, 2016 The article describes the method of calculation of the moments about the hinge axis of the main rotor hub from the action of aerodynamic and inertial forces generated on the blade.
B. L. Artamonov, M. M. Kruchinin
doaj
Electroactive Liquid Crystal Elastomers as Soft Actuators
Advanced Functional Materials, EarlyView.Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley +1 more source
Aeroacoustic analysis of main rotor-tail rotor interaction [PDF]
, 2008 The increased restrictions placed on helicopter noise levels over recent decades have encouraged manufacturers to better understand tail rotor noise and its aerodynamic sources. A generic single main rotor and tail rotor helicopter has been simulated in high speed forward, and quartering, flight using the Vorticity Transport Model.
Fletcher, Timothy M. +2 more
openaire
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
Main rotor-body action for virtual blades model
EPJ Web of Conferences, 2018 This research aims to investigate a virtual blade model and assess rotor influence on helicopter fuselage aerodynamics. The rotor disk is discretized in the azimuthal direction, and a time-varied pressure jump is applied in regions occupied by the blades.
Kusyumov Alexander +6 more
doaj +1 more source
Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications
Advanced Functional Materials, EarlyView.Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner +9 more
wiley +1 more source
Exploring the Detached-Eddy Simulation for Main Rotor Flows [PDF]
Russian Aeronautics, 2018 This paper applies the Detached-Eddy Simulation (DES) method to resolve a larger part of the flow spectrum around rotor blades in hover and forward flight. A comparison between DES and Unsteady Reynolds–Averaged Navier–Stokes simulation was carried out for the case of a forward flying rotor suggesting that DES has great potential for rotor applications.
Dehaeze, F. +4 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Two kinds of self‐assembled RNA micelles were used to co‐deliver synergistic siRNA and nucleoside analogues for the treatment of colorectal cancer lung metastases. Near‐complete elimination of lung cancer metastases was confirmed in an orthotopic lung metastasis model constructed using human colorectal cancer lung metastases patient surgical samples to
Kai Jin +4 more
wiley +1 more source
PRESSURE THEORY OF HELICOPTER ROTOR
Advanced Engineering Research, 2011 A new theory of determining the principal aerodynamic characteristics of the propeller is offered.
Sergey P. Lisin
doaj
Variable-speed rotor helicopters: Performance comparison between continuously variable and fixed-ratio transmissions [PDF]
, 2016 Variable speed rotor studies represent a promising research field for rotorcraft performance improvement and fuel consumption reduction. The problems related to employing a main rotor variable speed are numerous and require an interdisciplinary approach.
Benini, Ernesto +1 more
core +1 more source