Commercial Aircraft Corporation of China (China)

Switching dominant tones from trailing edge tonal noise

The tonal noise generated at the trailing edge of an airfoil under low-to-moderate Reynolds number conditions can exhibit multiple tones. While time-averaged spectra typically show a single dominant tone, specific cases within a narrow velocity range reveal the existence of two d...

A Flooding‐Resistant Fluorinated Methacrylate Polymer for Enhanced CO 2 Electroreduction to Ethylene

ABSTRACT The electrochemical reduction of CO 2 to ethylene offers a sustainable approach for the chemical industry and greenhouse gas mitigation. However, the widely used perfluorosulfonic acid (PFSA) binder is prone to causing catalyst layer flooding due to its excessive hydroph...

Tool Wear and Failure Prediction in Machining Difficult-to-Machine Materials: A Review of Monitoring, Modeling, and Intelligent Manufacturing Technologies

Difficult-to-machine materials, including titanium alloys, nickel-based superalloys, hardened and high-strength steels, stainless steels, and fiber-reinforced composites, are widely used in advanced manufacturing but impose severe thermo-mechanical–chemical loads on cutting tools...

Experimental study on the ignition characteristics of a three-phase electrodes plasma-enhanced swirl combustion

The ability to achieve reliable ignition in aircraft engines under extreme conditions is important for ensuring flight safety. To address this challenge, a novel three-phase electrodes plasma-enhanced combustion technology was proposed. Three-phase rotating gliding arc electrodes...

An investigation on the flame characteristics of sustainable aviation fuels and their blends near lean ignition limit

With the increasing adoption of SAFs in aero-engines, ignition performance and flame stability are critical for achieving reliable combustion over a wide operating range. This study investigates the transient flame evolution of RP-3, HEFA-SPK, and their equal-volume blend near th...

Dislocation Engineering Steers Reaction‐Induced Reconstruction of Vanadium Oxides for Selective Oxidation of Ethane

ABSTRACT Catalytic active sites or centers could evolve from their initial form under realistic reaction conditions due to the autonomous behaviors of the constituent atoms to adapt to the surrounding environment. Controlling such adaptability of metal‐oxide‐based catalysts is cr...

Recent Advances in Interfacial Strengthening and Matrix Toughening of Carbon-Fiber-Reinforced Polymer Composites

Resin-based carbon fiber composites exhibit outstanding comprehensive mechanical properties, including high specific strength, high modulus, corrosion resistance, low weight, stable dimensional performance and low thermal expansion coefficient, and they have been widely deployed...

Temperature‐Dominated Deformation Mechanism and Quantitative Prediction of CF / PEKK Prepreg Tape in LAFP Process

ABSTRACT During laser‐assisted automated fiber placement (LAFP) in situ consolidation, width variations in prepreg tapes lead to gaps or overlaps between adjacent tapes, significantly impairing the forming quality of final components. This study investigates the deformation behav...

Influence of Interruptions on the Diagnosis Task Performance

ABSTRACT Digital nuclear power systems increasingly expose main control room (MCR) operators to multitasking and interruptions that disrupt cognitive resource allocation and threaten safety, yet the underlying mechanisms remain underexplored. This study conducted behavioral exper...

Defect Suppression Mechanism of CFRP in Longitudinal-Torsional Coupled Ultrasonic Vibration-Assisted Drilling

Carbon fiber reinforced plastic (CFRP) composites have been widely adopted in the aerospace industry due to their excellent mechanical and physical properties. However, their anisotropy and weak interlaminar bonding make them prone to defects such as delamination and fiber pull-o...

Numerical Investigation of Aeropropulsive Coupling Effects of Distributed Propulsion Systems under Near-Stall Conditions

Abstract Distributed propulsion (DP) systems offer increased lift, decreased drag, higher propulsion efficiency, and reduced fuel consumption. However, complex aeropropulsive interactions can significantly affect the aerodynamic performance of distributed propulsion systems, part...