In recent years, several innovative enterprises like SpaceX and OneWeb have initiated the LEO Internet constellations. Therefore, recognizing its importance to the internet usersis meaningful to review the state-of-the-art technologies and the relevant challenges. In this review, three representativ...

A method to analyse the toxicity of thermal runaway gases of batteries, referring to the risk assessment theory was proposed. It aims to investigate the hazard ratings of the main harmful substances in the thermal runaway gas of lithium-ion batteries.By using the fractional effective dose (FED) equa...

Convolutional neural networks (CNN) can be used for sea surface wind speed retrieval of cyclone global navigation satellite system (CYGNSS). There are still anomalous values in the observation data of CYGNSS, despite the fact that numerous quality control indicators have been set up to detect and we...

To address the problems of incomplete dehazing and image color distortion in the existing image dehazing algorithms, a dehazing network combining transfer learning sub-net and residual attention sub-net is proposed. First, the pre-trained model of the transfer learning subnet is adopted to enhance t...

To address the data loss problem of aero engine sensors, a tensor reconstruction model LRTC-PTNN based on tensor singular value threshold (TSVT) is proposed to reconstruct the sensor data of aircraft engines. LRTC-PTNN uses truncation p-shrinkage norm to replace the original tensor trace norm as the...

The increasing demand for high-dynamic flight of quadrotors has made it an increasingly popular research topic. In order to solve the state tracking control problem of aggressive trajectories when quadrotors undertake activities such as navigating the cracks in the ruins and the gaps in the forest, ...

The multi-UAV cooperative guidance under target maneuvering is studied, and a distributed cooperative guidance strategy based on virtual negotiation mechanism and rolling horizon optimization is proposed. To improve the effect of time coordination and guidance control at the same time, the local coo...

The high plateau approach and landing of civil aircraft is a high-risk stage of high plateau flight. To effectively identify the risk and its grade of this approach and landing, a long short term memory-deep neural network (LSTM-DNN) deep learning risk assessment method is proposed based on the vari...

According to the actual requirements of the current air threat target interception, combined with the interceptor’s own maneuverability and based on the full coverage cooperative strategy, a realistic true proportional navigation law (RTPN) guided interception method for collaborative detection is d...

To address the group formation tracking-containment control problem of unmanned aerial vehicles (UAV) swarm, a hierarchical cooperative control architecture including group cooperation and tracking-containment is established. In order to highlight the top-level planning ability of swarm system, a gr...

In order to ensure the overall performance of the airport under severe weather, scientifically evaluate the resilience of the airport's flight operations, improve flight recovery capabilities, and alleviate the impact of severe weather effectively. This article first gives the definition of airport ...

Robust traffic flow prediction, as the core technology of Intelligent Transportation Systems, is a long-standing but challenging task. The fact that current models need a lot of training data and are susceptible to noise disturbance is a major factor that is restricting the growth of this subject. I...

The deployable mechanism for a spaceborne synthetic aperture radar (SAR) antenna is a space truss structure, with the rod system and hinge coupled in space. Assembling accuracy is difficult to control precisely during the assembly process, and assembly reliability directly impacts the spaceborne SAR...

UAVs face a significant problem while trying to avoid moving objects while in flight. In order to detect and avoid high-speed dynamic obstacles in a dynamic environment, an algorithm for target detection and obstacle avoidance based on a dynamic vision sensor was designed. Firstly, we propose an eve...

A fast and efficient dynamic simulation model of heat exchangers is urgently needed to meet the requirements of the advanced control system design for the integrated environmental control and thermal management system of aircraft. In this paper, a dynamic model by transfer function matrix, composed ...

For electro-hydrostatic actuator (EHA), the traditional sliding mode controller has many defects, such as control signal chattering, difficulty in acceleration information acquirement and controller parameters tuning, which make the controller difficult to be applied in practice. To solve the above ...

Supercooled large droplets (SLD) represent one of the most hazardous flight conditions. The unique dynamic behavior of large droplets, including deformation, fragmentation, splash, and rebound, poses challenges for accurately assessing SLD icing using traditional icing calculation methods. In this s...

In response to the high-precision relative positioning requirements for precise collaborative operations involving distributed blast-off platforms, this research proposes a relative ranging and positioning model based on ultra wide band (UWB) sensors. It analyzes the error factors and noise componen...

In the process of using electromagnetic induction heating to achieve the curing and shaping of carbon fiber reinforced Polymer (CFRP) materials, accurately characterizing the property parameters of the material's various components is of utmost importance in studying temperature, degree of curing, a...

The tube is less limited during 3D free bending, and the eccentricity of the bending die determines the radius of the bend and the form of the bending axis. In order to accurately process the shape of the tube and improve the forming accuracy during the free bending process, a new free bending mecha...

The computation of the convex hull of the Jordan curve has found widespread application in recent years. A simulation of progressive support for an elastic line approach was suggested in this paper to determine the elastic envelope of a straightforward closed generic polygon. Based on the physical m...

Aiming at the problem of fine management and low prediction accuracy of deicing operation process under ice and snow weather, a prediction method for aircraft ground deicing operation process based on the temporal and spatial correlation dynamic Bayesian network is proposed. A spatial-temporal corre...

The performance of the gyroscope is impacted by the steadiness of the gyro motor’s rotating speed. To improve the stability control precision of the permanent magnet synchronons gyro motor (PMSGM), propose the method use of the active disturbance rejection control (ADRC) in the speed loop and a mode...

The in-orbit thermal deformation analysis of space-deployable antennae is very important because it is one of the major factors impacting the accuracy of these antennae.With the increasing requirements of space exploration missions, the influence of hinge thermal deformation on the pointing accuracy...

To enhance the performance of phase change heat sink based heat sinks, the topology optimization of a sorbitol/aluminum phase change heat sink based heat sink is carried out using solid isotropic material with penalization (SIMP) method. Numerical investigations on phase change heat sink with topolo...

The aircraft’s electric antiskid braking system has strong nonlinear characteristics, and the interference in the electromechanical actuator (EMA) is not conducive to system stability, a sliding mode backstepping control method based on finite-time prescribed performance control is proposed. An elec...

Due to the rank-deficient phenomenon of the covariance matrix in coherent targets estimation, a algorithm based on diversity smoothing optimization for joint estimation of coherent target wave direction of departure (DOD) angle and direction of arrival (DOA) is proposed to solve the problems of poor...

Civil aircraft spare parts affect flight safety and the cost of spare parts accounts for the highest proportion of airlines' controllable costs. It is significant to make spare parts planning on the premise of ensuring flight safety. A spare parts quantity model is built based on the Markov birth an...

A learning sparrow search algorithm called HSSA that combines a boundary processing mechanism is proposed in order to address the sparrow search algorithm's (SSA) insufficient population distribution during the initialization stage and the optimization process' insufficient interference from local o...

The traditional spoofing detection algorithm suffers from a prolonged time of detecting ramp spoofing with small slopes, a high false alarm rate, and a high missed detection rate. Therefore, this study proposes a spoofing detection algorithm with tightly-coupled global navigation satellite system (G...

A design and analysis approach and continuous gait planning scheme of quadruped lunar-based equipment (LBE) based on the same chain configuration are suggested in order to address the issues of challenging configuration design and complex gait analysis of lunar probes with buffer and walking functio...

The effectiveness of subsequent intelligence analysis can be increased by comprehending and compressing the vast amount of aerospace information that is hidden in the Internet's aerospace news. However the general automatic summarization algorithms tend to ignore many domain key Information, and the...

Accurate remaining useful life prediction helps to improve the reliability and safety of the system and reduce the economic cost of the whole life cycle of the system. In engineering applications, due to the influence of uncertain measurement, the nonlinear degradation characteristics of stochastic ...

The effects of explosive mass, blast azimuth, and blast distance on the degree of damage to typical airfoils were investigated using the finite element method in order to analyze the damaging effect of typical airfoils under the action of blast shock wave and its structural dynamics following damage...

As an alloy material widely used in aerospace, the study of fatigue fracture behavior of aluminum-lithium alloy is of great significance to the evaluation of structural safety. The third generation Al-Li alloy 2195-T8 is taken as the research object, and the fatigue crack propagation behavior of 219...