Civil Aviation University of China

New results on hypercube coloring problem from linear codes over Z2k

This paper is concerned with the hypercube coloring problem. Let 𝜒 ℓ ⁡ ( 𝑚 ) be the minimum number of colors needed to color the vertices of a hypercube with 2 𝑚 vertices such that every two vertices with Hamming distance ≤ ℓ have different colors. Using linear codes over ℤ 2 𝑘 (...

Control Volume Free Element Method for Simulating Thermal Runaway of Lithium-Ion Battery

The safety of lithium-ion batteries is a critical concern, and this paper introduces a novel simulation approach for thermal runaway using the control volume free element method (CVFrEM). This method uniquely integrates the geometric adaptability of mesh-free techniques with the...

Bridging Autonomous Driving and Electric-Mobility Systems: From Technical Interfaces to Cross-System Validation

Road-transport electrification and driving automation increasingly connect vehicle actions with charging services and urban electricity demand. This review combines two Web of Science Core Collection result sets with abstract-level term analysis and a structured synthesis of tech...

Lightweight Relation-Aware Graph Neural Networks for Network Threat Detection in the Social Internet of Things

Network threat detection in the Internet of Things must exploit typed relations between devices: a device with unremarkable flow statistics may still be compromised relative to its ownership, co-location, and social ties. Existing graph-based intrusion detectors discard relation...

Cue validity moderates the effects of haptic feedback in simulated instrument flight

This study examined if haptic cue validity moderates pilot situational awareness (SA) and performance in simulated instrument flight, using eye-tracking (ET) and electroencephalography (EEG) to assess attentional and cognitive mechanisms. Student pilots completed instrument fligh...

A novel heterogeneous coupled neuron network and its application in mechanical fault feature enhancement

In practical engineering, fault characteristic signals are often overwhelmed by strong background noise and complex working conditions, which poses a serious challenge for timely detection and accurate identification of faults. Therefore, a novel heterogeneous coupled neuron netw...

Pyrolysis and Pyrolysis Reoxidation Combustion Characteristics of Lignite

Coal, as the main energy source for building heating in northern cities of China, features large reserves, low cost, and high stability in heat supply. Low-temperature pyrolysis reactions are prone to occur within the coal pile; the coal after low-temperature pyrolysis is more pr...

Spatiotemporal Prediction-Driven Model Predictive Control for Vehicle–Aircraft Conflict Resolution on Airport Surface

The increasing density and complexity of airport surface operations have intensified the risk of crossing conflicts between ground service vehicles and taxiing aircraft. Such interactions are characterized by strong spatiotemporal coupling, asymmetric right-of-way relationships,...

Investigation on the coupling characteristics of curved micro-tube bundles with different support configurations

The structural integrity of curved micro-tube bundles in aero-engine precoolers is critical for hypersonic flight safety and efficient thermal management. However, these bundles frequently suffer from severe flow-induced deformation and localized stress concentration under extrem...

Creep Failure and Pyrolysis Damage Mechanism of CFRP Under Thermo‐Mechanical Coupling

ABSTRACT A key challenge in airworthiness of composite aircraft is understanding the thermo‐mechanical response and failure of carbon fiber reinforced polymer (CFRP) in in‐flight fire. A sequentially coupled thermal‐stress analysis with a three‐dimensional thermal response model...

Experimental investigation of the direct shear strength parameters of compacted snow

Abstract. Compacted snow is utilized as a building material in various construction and engineering applications across global high-latitude regions. For the safety assessment of snow and ice structures in cold regions, cohesion and internal friction angle are key shear strength...

Damage Quantification Monitoring of CFRP Structures Cross-Area Based on Transfer Learning

Given the widespread application of carbon fiber reinforced polymer (CFRP) structures in aerospace and automotive manufacturing, the critical role of structural health monitoring (SHM) is increasingly evident. Traditional damage quantification methods exhibit poor transferability...

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...

Uncertainty-Aware Vision-Based Landing-Site Perception for Autonomous UAV Landing in Urban Environments

Autonomous UAV landing in urban scenes requires a perception module that can identify candidate landing surfaces, reject structural and dynamic hazards, and express uncertainty before a downstream controller commits to a landing maneuver. This study reformulates UAV landing perce...