Results 11 to 20 of about 1,536 (172)
A Novel Emergent State Control Law for an Integrated Helicopter/Turboshaft Engine System [PDF]
Mathematical Problems in Engineering, 2014 A two‐layer robust control scheme is proposed to get a better response ability for emergency maneuvers of helicopter. Note that the power used in ascending flight is the main coupling between helicopter and its turboshaft engines; therefore vertical flight control is separated from conventional helicopter control loops and combined with fuel flow and ...
Haibo Zhang, Yongjin Li, S. Deng
openaire +4 more sources
The Helicopter Turboshaft Engine’s Reconfigured Dynamic Model for Functional Safety Estimation
Electronics (Switzerland)This research substantiates the necessity for developing and implementing structural reconfiguration methods for automatic control systems in the event of a parametric sensor failure to enhance the helicopter turboshaft engine’s overall reliability and safety.
Serhii Vladov +2 more
exaly +2 more sources
AerospaceIn this study, the influence laws of different parameters on the exclusion characteristics of hailstone and ice flake, and on the aerodynamic performance of the inlet are studied by numerical method. The motion of the hailstone and ice flake is simulated
Ge Zhou +4 more
doaj +3 more sources
Fuel cells: a real option for Unmanned Aerial Vehicles propulsion. [PDF]
ScientificWorldJournal, 2014 The possibility of implementing fuel cell technology in Unmanned Aerial Vehicle (UAV) propulsion systems is considered. Potential advantages of the Proton Exchange Membrane or Polymer Electrolyte Membrane (PEMFC) and Direct Methanol Fuel Cells (DMFC), their fuels (hydrogen and methanol), and their storage systems are revised from technical and ...
González-Espasandín Ó +2 more
europepmc +2 more sources
Analysis of unstable mode of a free gas turbine of turbo-compressors engines [PDF]
MATEC Web of Conferences, 2021 This paper analyses unstable mode of a free gas turbine of turboshaft helicopter engine TV3-117. The analysis is focused on the conditions of this phenomenon and the possibilities of its solution in a turboshaft helicopter engine and an industrial ...
Hocko Marián, Al-Rabeei Samer
doaj +1 more source
Onboard Neuro-Fuzzy Adaptive Helicopter Turboshaft Engine Automatic Control System
EnergiesA modified onboard neuro-fuzzy adaptive (NFA) helicopter turboshaft engine (HTE) automatic control system (ACS) is proposed, which is based on a circuit consisting of a research object, a regulator, an emulator, a compensator, and an observer unit.
Serhii Vladov +3 more
doaj +2 more sources
Helicopter Turboshaft Engine Residual Life Determination by Neural Network Method
Electronics (Switzerland)A neural network method has been developed for helicopter turboshaft engine residual life determination, the basis of which is a hierarchical system, which is represented in neural network model form, consisting of four layers, which determines the numerical value of the residual life.
Serhii Vladov +2 more
exaly +2 more sources
Impact of dust erosion on the reduction of axial compressor efficiency of a turboshaft engine and on the stability of its operation [PDF]
MATEC Web of Conferences, 2022 This paper aimed to solve the impact of operational abrasive wear on the rotor blades of the axial compressor of the turboshaft engine on the decrease in its total compression efficiency ηCt and its transition into unstable work mode (surge).
Hocko Marián, Al-Rabeei Samer
doaj +1 more source
Development of the helicopter turboshafted engine regulator
Aerospace Technic and Technology, 2023 The subject of research was the development of the RDC-450M-117V – the TV3-117VMA-SBM1V digital engine regulator – based on the RDC-450M previously created at the enterprise for the AI-450M engine, considering differences in engine characteristics and exploitation conditions.
Gennadii Ranchenko +4 more
openaire +2 more sources
Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters
IEEE Access, 2021 The exhaust of turboshaft engines contains a big amount of waste heat but does not provide propulsion power to the helicopter. Reusing the heat can increase fuel efficiency and reduce carbon emissions of the engine.
Yuxue Ge, Yuhao Wei, Qian Zhao, Yang Pei
doaj +1 more source