Recently, the Low-Altitude Industry Alliance released the Reference Architecture of the Low-Altitude Intelligent Networked System (2024 Edition) report, which outlines the basic content of the developmental evolution stages, components, and system framework of the low-altitude intelligent networked ...

The gap between the main wing surface and the movable wing surface might have a certain impact on the flight performance of the aircraft. The application of the gap-sealing structure will improve the surface smoothness of the wing while achieving effects such as increasing lift, reducing drag, and o...

A vehicle transmission system is a power transmission device between the engine and wheel load. As the connection hub of the power system, walking system and braking system, it ensures the mobility and safety of special equipment in combat tasks. Firstly, it was demonstrated that transmission effici...

In order to improve the accuracy and compliance of human-robot physical interaction and achieve optimal interaction performance, a human-robot physical interaction control method based on iterative optimal impedance was proposed to solve the problem that iterative learning-based impedance control me...

In order to further improve the coherence speckle suppression and edge preservation performance of synthetic aperture radar (SAR) images by deep learning methods, a coherence speckle suppression method based on edge-guided dual-branch network was proposed. The method constructed a new speckle suppre...

In view of the characteristics of the small number and many types of rail defect samples, unstable transfer learning effect in real scenes, and threshold segmentation susceptible to environmental factors, an improved Markov defect segmentation method with zero samples was proposed. Firstly, the coll...

In order to improve the stability of air traffic flow, this study investigated an aircraft multi-velocity difference car-following model considering offsets based on the characteristics of flight networking operations. Firstly, to quantitatively describe the influence of offsets between aircraft on ...

Traditional artificial gorilla troops optimizer (GTO) has the drawbacks of easily falling into local optimum, slow convergence speed, and low optimization accuracy. Aiming at these problems, an artificial gorilla troops optimizer based on a double random disturbance strategy (DGTO) was proposed. Fir...

Using a high-gain disturbance observer（HGDO）, a self-adaptive nonsingular terminal sliding mode control (ANTSMC) approach is devised to solve the issue of control performance degradation in magnetic levitation ball systems caused by modeling errors and unknown disturbances. First, a model of the mag...

The monitoring and analysis of exceedance events within the flight operation quality assurance (FOQA) program is one of the crucial ways to identify potential risks in flights. However, existing methods lack comprehensive consideration for the interrelationships between various exceedance events, th...

The radome and aircraft are often connected by adhesive bonding and auxiliary connection. With the development of aircraft technologies, higher requirements are raised by severe thermo-mechanical environments for the properties of bonding structure during flight. In practical engineering application...

The coordination restrictions of several apron support services and dynamic flight information have resulted in increased operational demand on large airport apron support vehicles and more difficulties with vehicle scheduling. Considering the difference of vehicle operation constraints in three dif...

In order to provide a theoretical basis for the gas path performance degradation of civil aviation engines at the module level, the CFM56-3 engine was taken as the research object. Firstly, the characteristic map scaling method was used to obtain the component characteristic equations, and the selec...

Although the existing compressed sensing-magnetic resonance imaging (CS-MRI) methods based on deep learning have achieved good results, the interpretability of these methods still faces challenges, and the transition from theoretical analysis to network design is not natural enough. In order to solv...

To address the problem of insufficient representational capability and lack of online update of the fully-convolutional Siamese network (SiamFC) tracker in complex scenes, this paper proposed a visual tracking algorithm based on multi-attention and dual-template update. First, the feature extraction...

In order to precisely analyze the operating status of angular contact ball bearings (ACBBs) with local defects and response to the impact force caused by bearing lubrication and defects in the traditional model, a dynamic model of ACBBs with local defects considering impact force under elastohydrody...

Clustering by fast search and find of density peaks (DPC) algorithm is a density-based clustering algorithm that does not require iteration or too many parameter settings. However, it fails to identify cluster centers with low cluster density because the local structure of data is not considered whe...

The melting of ice crystals in the compressor leads to ice formation on the blades. It is of great significance to analyze the ice crystal melting characteristics to study the ice crystal icing in the compressor. Based on the one-dimensional aerodynamic characteristics of the compressor, a rapid met...

The air data sensing system provides the necessary parameters for aircraft flight control, delivery and trajectory control, such as static pressure, total pressure, angle of attack, and sideslip angle. The inter-generation development of aircraft has induced the evolution of the basic element acquis...

In order to improve the pollutant resistance of satellite-borne absolute-to-be optical encoder, a method based on multiple references and probes is proposed. First, the composition and circuit design of the satellite-borne absolute-to-be optical encoder was introduced. Second, the data from several ...

To alleviate the excessive dependence of graph neural networks on prior knowledge in community discovery and improve recognition accuracy, a novel self-supervised learning model for community detection based on a deep graph convolutional network (GCN) is proposed. The model makes full use of the sem...

Limit cycle oscillation happens in airfoil systems with freeplay nonlinearity within a specific velocity range. Because the traditional linear control law’s limit cycle suppression effect is typically insignificant and its robustness is insufficient, a corresponding nonlinear control law must be des...

The selection of the diaphragm constitutive model is directly related to the precision of hot diaphragm forming simulation. In order to analyze the applicability of five hyperelastic constitutive methods to different diaphragm materials, uniaxial tensile tests were carried out on two different types...

Infrared image sensing technology has received widespread attention due to its advantages of not being affected by the environment, good target recognition, and strong anti-interference ability. However, with the improvement of the integration of the infrared focal plane, the constraints among the d...

An adaptive proportional navigation law with intelligent parameter adjustment by deep reinforcement learning is presented to address the issue of excessive miss distances and energy loss in the interception of moving targets using fixed coefficient proportional navigation law. First, a state space b...

A kinematic model considering joint clearance is developed for the variable stator vane (VSV) adjustment mechanism of an aero-engine. A reliability model of the mechanism’s kinematic accuracy is constructed considering the failure correlation among stator vanes, as well as the stochastic nature of d...

The traction system, serving as the power core of urban rail transit trains, plays a crucial role in ensuring the safe operation of the trains. Reliability assessment and lifespan prediction are investigated in order to tackle the difficulties brought about by the traction system’s intricate structu...

An experimental study of an annular model combustor was conducted to investigate spray ignition and blow-out problems in a centrally staged annular combustor. In the annular model combustor composed of 16 centrally staged injectors, the spray ignition and blow-out process of aviation kerosene RP-3 w...

Under the development background that autonomous vehicles will share road resources with traditional traffic participants in the future, pedestrian safety behavior modelling in the shared road spaces of pedestrian-traditional vehicle-autonomous vehicle is crucial to the simulation development and re...

The singularity of the delay-Doppler map (DDM) is the primary focus of study on typhoons using global navigation satellite system (GNSS) reflectometry. However, due to the presence of ambiguity functions, this singularity is blurred, which affects detection performance. The normalized bistatic radar...

The beam properties of the micro Hall thruster µHT-1, which is intended for space gravitational wave detection, are being experimentally investigated for the first time. A Faraday probe combined with a three-dimensional mobile mechanism was used for diagnosis, and the beam ion current density distri...

The aerodynamic characteristics of the airfoil for the Martian unmanned aerial vehicles (UAVs) need to be improved because of the low density and the low pressure in the Martian atmosphere. The active flow control technology with plasma excitation was used to enhance the airfoil lift and reduce the ...

Due to the lack of outfield failure data and historical warranty claim records of new products, it is difficult to carry out scientific and reasonable warranty cost prediction and warranty period optimization. Considering the interaction between the degradation processes of different product perform...

Traditionally, the internal structure of aircraft wings is generally straight spars and ribs. The use of curvilinear spars and ribs (SpaRibs) can greatly broaden the design space of the aircraft wing structure and further improve the aeroelastic performance of the aircraft wing. Since the linked sha...

A new innovation-weighted adaptive Kalman filtering algorithm is proposed to improve system performance by addressing the issues of poor stability of the internal calibration punctual system of micro-nano satellites and low punctuality accuracy when large changes occur due to the influence of ambien...

The direct lift control method of automatic landing based on Proximal Policy Optimization (PPO) algorithm was proposed to solve the problem that it is easy to touch ship due to disturbance of deck movement and carrier air wake during automatic landing of carrier aircraft. The PPO controller takes si...

An improved sine-cosine optimization (ISCA) deep belief network (DBN) prediction model for ground air conditioning energy consumption is suggested in order to increase the prediction accuracy of ground air conditioning energy consumption when the aircraft cabin is cooled by ground air conditioning. ...