Results 31 to 40 of about 1,393 (153)

Intelligent Situational Control of Small Turbojet Engines

International Journal of Aerospace Engineering, Volume 2018, Issue 1, 2018., 2018
Improvements in reliability, safety, and operational efficiency of aeroengines can be brought in a cost‐effective way using advanced control concepts, thus requiring only software updates of their digital control systems. The article presents a comprehensive approach in modular control system design suitable for small gas turbine engines.
Rudolf Andoga, Ladislav Főző, Jozef Judičák, Róbert Bréda, Stanislav Szabo, Róbert Rozenberg, Milan Džunda, Konstantinos Kyprianidis   +7 more
wiley   +1 more source

BASIC MODEL OF THE AIRCRAFT ENGINE REGULATOR AND ITS MODIFICATIONS

Авіаційно-космічна техніка та технологія, 2020
It is shown that the creation of a unified electronic control and control equipment for aircraft gas turbine engines is one of the determining trends in the experimental design work of enterprises developing components of aircraft equipment.
Геннадий Степанович Ранченко, Анна Григорьевна Буряченко, Вячеслав Михайлович Грудинкин, Всеволод Владимирович Данилов   +3 more
doaj   +1 more source

Self-Oscillations of The Free Turbine Speed in Testing Turboshaft Engine with Hydraulic Dynamometer

Aerospace, 2021
Self-oscillations are one of the common problems in the complex automatic system, that can occur due to the features of the workflow and the design of the governor. The development of digital control systems has made it possible to damp self-oscillations
Oleksandr Lytviak, Vasyl Loginov, Sergii Komar, Yevhen Martseniuk   +3 more
doaj   +1 more source

Performance and Vibration Analyses of Lift‐Offset Helicopters

International Journal of Aerospace Engineering, Volume 2017, Issue 1, 2017., 2017
A validation study on the performance and vibration analyses of the XH‐59A compound helicopter is conducted to establish techniques for the comprehensive analysis of lift‐offset compound helicopters. This study considers the XH‐59A lift‐offset compound helicopter using a rigid coaxial rotor system as a verification model.
Jeong-In Go, Do-Hyung Kim, Jae-Sang Park, Davide Micheli   +3 more
wiley   +1 more source

Active Flow Control in a Radial Vaned Diffuser for Surge Margin Improvement: A Multislot Suction Strategy

International Journal of Rotating Machinery, Volume 2017, Issue 1, 2017., 2017
This work is the final step of a research project that aims at evaluating the possibility of delaying the surge of a centrifugal compressor stage using a boundary‐layer suction technique. It is based on Reynolds‐Averaged Navier‐Stokes numerical simulations. Boundary‐layer suction is applied within the radial vaned diffuser.
Aurélien Marsan, Isabelle Trébinjac, Stéphane Moreau, Sylvain Coste, Yutaka Ohta   +4 more
wiley   +1 more source

Coordinating a Service Supply Chain under Arms Offset Program’s Intervention by Performance‐Based Contracting

Mathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016
This paper investigates a support service supply chain for coordinating with a local third‐party logistics provider by arms offset program’s intervention and develops a performance‐based contracting framework for the coordinating problem, which remains scarce in the literatures. The performance‐based contracting framework evaluates payments and profits
Yi-Kuei Lin, Jong-Jang Lin, Ruey-Huei Yeh, Young Hae Lee   +3 more
wiley   +1 more source

Gas turbine power calculation method of turboshaft based on simulation and performance model

MATEC Web of Conferences, 2018
Gas turbine power of turboshaft engine cannot be measured, a total of five typical steady state point test data from the ground slow state to the maximum state were selected according to the factory acceptance test drive of a certain type of carrier ...
Wu Heng, Zhao Shufan, Zhang Jijun, Sun Bo, Song Hanqiang   +4 more
doaj   +1 more source

STAND IMITATOR OF THE ENGINE AS A UNIVERSAL MEANS OF ENSURING THE DEVELOPMENT AND TESTING OF REGULATORS

Авіаційно-космічна техніка та технологія, 2020
There is described the work on the project, carried out at the enterprise Element JSC for the creation of aircraft gas turbine engine simulator stands, for the maintenance and testing of some digital regulators for helicopter and aircraft engines ...
Анна Григорьевна Буряченко, Дмитрий Сергеевич Бурунов, Вячеслав Михайлович Грудинкин, Андрей Олегович Таранишин   +3 more
doaj   +1 more source

Effect of engine torque fluctuations under different flight conditions on the torsional vibration response of helicopter power input chain [PDF]

Mechanical Sciences
Under varying flight conditions, helicopter turboshaft engines generate pronounced torque fluctuations that can intensify torsional vibration in the power input chain, accelerating fatigue damage of critical transmission components and threatening flight
H. Yue, C. Li, G. Bin, X. Liu, J. Li, A. Chen, Q. Li   +6 more
doaj   +1 more source

Evaluation of the Potential of Recuperator on a 300-kW Turboshaft Helicopter Engine [PDF]

, 2020
In this thesis, an integrated rotorcraft multidisciplinary simulation framework has been developed to comprehensively evaluate the potential of the rotorcraft adopting a recuperator under various flight conditions as well as at mission levels. Through the execution of multi-objective genetic algorithm (GA) optimization, the Pareto front model is ...
openaire   +1 more source