Results 31 to 40 of about 1,536 (172)
Vibration and Performance Analyses Using Individual Blade Pitch Controls for Lift‐Offset Rotors
International Journal of Aerospace Engineering, Volume 2019, Issue 1, 2019., 2019 This work attempts to reduce the hub vibratory loads of a lift‐offset rotor using IBC (individual blade pitch control) in high‐speed forward flight. As a lift‐offset rotor for the present study, the rigid coaxial rotor of a XH‐59A compound helicopter is considered and CAMRAD II is used to predict the hub vibration and rotor performance.
Jae-Sang Park +5 more
wiley +1 more source
IEEE Access, 2019 In order to solve the problem of insufficient power supply for helicopter and to increase the response speed of engine output power during the climbing process, the research on acceleration optimization control for the integrated helicopter/engine system
Yong Wang +3 more
doaj +1 more source
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 +7 more
wiley +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 +3 more
wiley +1 more source
MATHEMATICAL MODEL OF FUEL PUMP-REGULATOR OF HELICOPTER TURBO-SHAFT ENGINE
Авіаційно-космічна техніка та технологія, 2020 This article discusses the relevance of creating a mathematical model of a hydromechanical fuel regulator as the main component of the parametric diagnostics method.
Игорь Валериевич Оганян
doaj +1 more source
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 +4 more
wiley +1 more source
Electro-jet engine: a jet engine without turbine - Part 2. Electric power generation [PDF]
INCAS BulletinThis part studies theoretically and experimentally the conversion of thermal energy directly into electrical energy. The experimental part was based on the recovery of a part of the heat lost to the cold source, i.e.
Sorin NUTU
doaj +1 more source
Aerospace, 2023 This study assesses the influence of engine dynamic characteristics on helicopter handling quality during hover and low-speed forward flight. First, we construct the helicopter–engine coupling model (HECM) based on the power-matching relationship between
Yuan Wei +3 more
doaj +1 more source
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 +3 more
wiley +1 more source
Performance assessment of simple and modified cycle turboshaft gas turbines
Propulsion and Power Research, 2013 This paper focuses on investigations encompassing comparative assessment of gas turbine cycle options. More specifically, investigation was carried out of technical performance of turboshaft engine cycles based on existing simple cycle (SC) and its ...
Barinyima Nkoi +2 more
doaj +1 more source