Aero Engine Corporation of China (China)

Transient flash-temperature prediction using asperity microcontact pressure for rough-textured gear-tooth surfaces under mixed lubrication

Localized frictional heating at rough gear interfaces is strongly influenced by transient heat generation at discrete asperity contacts, whereas conventional flash-temperature methods represent the contact using an equivalent macroscopic heat source. This study develops an asperi...

Static and dynamic seal performances of axial force self-balancing devices

:Excessive axial force poses a critical challenge to the operational stability and reliability of turbomachinery, necessitating effective axial force balancing strategies. This study proposes a comprehensive methodology for the performance-oriented design and optimization of axia...

Effect of Nano‐CeO 2 Powder on Microstructure and Wear Resistance of Deloro 40 Coating Prepared by Laser Additive Manufacturing

In this study, a series of Deloro40 + x CeO 2 ( x = 0, 0.5, 1, 2, and 5 wt%) coatings were fabricated on SS316L stainless steel by laser additive manufacturing. The microstructure evolution, mechanical properties, and tribological behaviors of the deposited coatings were systemat...

Mechanism and Suppression of Acoustic Resonance in Compressors via Serial Flat-Plate Cascades

Abstract This study adopted a combined experimental and numerical approach to investigate acoustic resonance phenomena in aseroengine compressors. Experimental results demonstrate that intense acoustic resonance occurs at a characteristic frequency of 1,402 Hz when the rotational...

A study on lubrication characteristics of contaminated oil film and abrasive wear in fuel gear pumps based on discrete element method

Aviation fuel gear pumps are prone to accelerated wear of friction pairs during long-term high-load operation, generating metallic particles that contaminate the sliding bearing oil film and trigger abrasive wear. To address this, a coupling solution of the discrete element metho...

Experimentally validated reduced-order modeling of gear-rotor-bearing systems with three-dimensional shaft compliance and gyroscopic mapping

Traditional one-dimensional beam models cannot adequately represent the three-dimensional local compliance of stepped transmission shafts, whereas full solid models are inefficient for system-level nonlinear simulations. This study proposes a high-fidelity reduced-order model for...

Forced-Response Analysis and Machine-Learning-Based Prediction of Aero-Engine Fan Blades Using the Harmonic Balance Method

This study combines harmonic-balance simulations, modal response analysis, strain-gauge measurements, and machine-learning regression to assess the forced response of a three-row axial fan. At 10,500 rpm, Campbell-diagram analysis identifies a near-resonant third-mode rotor respo...

Machine learning empowered compositional design of multiple rare-earth principal component disilicates

Abstract The targeted design of multi-RE-principal-component RE2Si2O7 disilicates ((nRExi)2Si2O7) for environmental barrier coatings (EBCs) applications requires customizing the multi-RE compositions to achieve maximal optimization of the target properties. A critical prerequisit...

Influence of Operation Mode On The Performance and Component Matching and Multi-Objective Optimization of A Multi-Stream Adaptive Cycle Engine

Abstract The multi-stream adaptive cycle engine (ACE) represents a transformative propulsion concept for next-generation aircraft, offering the capability to dynamically balance thrust, efficiency, and thermal management across widely varying mission conditions. By incorporating...