Rolling bearing and squeeze film damper will introduce structural nonlinearity into the dynamic model of aeroengine. Rubbing occur due to clearance reduction design engine. The coupling fault make engine present rich vibration responses. This paper aims analyze nonlinear behavior whole aeroengine including rolling under rubbing fault. Firstly, a turboshaft with support is established; force, oi...

This paper proposes a novel design for hybrid engine air-particle separator filter (HEAPS) that combines the vortex tube (VTS) with inertial particle (IPS) to enhance separation efficiency. Helicopters often operate in harsh environments, such as deserts, and landing on unprepared runways poses severe risk turboshaft engines due ingestion of dust sand. can result significant damage engine's rot...

In the typical structure of a turboshaft aero-engine, mass flow cooling air in rotor-stator cavity is controlled by inlet seal labyrinth. This study focused on swirl and heat transfer characteristics with considerations thermal deformation effect. A numerical framework was established integrating conjugate (CHT) analysis structural finite element method (FEM) to clarify two-way aero-thermo-elas...

The turbine shared support structure is used widely in aeroengines, but theoretical and experimental research on a rotor-bearing system containing lacking. This paper reports into the coupling vibration response of squeeze-film-damper that has two spools with different rotation speeds supported by structure. problem addressed means tests finite-element method. Based features turboshaft engine s...

Abstract The present study proposes a model for the simulation of steady-state and transient behaviors Hybrid Electric Propulsive System (HEPS), in presence several forms degrees performance degradation. power system, which is made turboshaft engine coupled with an electric source intended urban air mobility applications. proposed encompasses capability modeling battery aging effects, and, cons...

The paper presents a new concept of the turbine engine in area pressure gain combustion (PGE). works according to Humphrey’s cycle. Minor modification construction has allowed power generation 500 kW, 700 1000 and 1800 kW. successfully resolved challenges related temporary opening closing chamber. presented valve timing system ensured effective gas flow what stands behind it, an process convers...

Abstract Hybrid engines are becoming more and widespread. Electric energy instead is a valid help to reduce the environmental impact. In hybrid engines, number of components higher this results in decrease reliability. With Engine Health Monitoring (EHM) we mean set techniques used monitor health status system based on values assumed by some related parameters. Artificial Intelligence (AI) meth...

Abstract Demands for rotorcraft with increased flight speed, improved operational performance and reduced environmental impact have led to a drive in research development of alternative concepts. Compound overcome the speed limitations conventional helicopters additional lifting propulsive components. Further benefits, these augmentations provide control parameters, resulting redundancy. This w...