Due to the limit of the installation location and the electrode number of the electrostatic sensor array (ESA), the linear independent measurement information of the aeroengine fault prognostics and health management (PHM) system is rare. Aimed at this problem, this paper proposes an electrostatic c...

In order to meet the requirements of large and slender structural components, a new type of 5-DOF hybrid robot is proposed, and the new large rotation angle 2T2R parallel mechanism module in the robot is analyzed and studied. Firstly, the degrees of freedom of 2-UPS & (2-RPR)R parallel mechanism...

To assess aircraft carbon dioxide emission levels and verify airworthiness, the latest ICAO certification process for carbon dioxide emissions has been studied. The comprehensive index CO₂ metric consisting of the specific air range (SAR) and the reference geometry factor (RGF) is used as a measure ...

With the successful application and rapid development of deep learning in many fields, the integration of deep learning with traditional structural analysis has become a new research direction. In terms of solving the finite element stiffness matrix problem, the application of convolutional neural n...

Loose particles such as metal fragments and wires may be left in the control circuit of the aerobat during the process of manufacture, which will cause potential danger like short circuits. To solve this problem, a method of identifying material of loose particles in the aerobat based on particle im...

Small joined-wing UAVs always face the disturbance caused by simple runway conditions and the influence of their own nonlinear factors. The existing control methods do not pay enough attention to the rolling control of the UAV during takeoff taxiing. In order to solve these problems, this paper anal...

For aircraft fuel tanks with continuously varying cross section in aircraft fuel system design, a method for calculating fuel mass properties with cross-section adaptability is proposed. Firstly, the fuel level normal vector is calculated using flight attitude and overload to determine the location ...

The aerodynamic shape of the blended wing body (BWB) aircraft is largely determined by the cabin layout, and thus designing a reasonable cabin layout is very important in the BWB aircraft conceptual design. In order to improve the efficiency of cabin layout design for BWB aircraft, a prototype for r...

By the use of a muffle, the static response of the yttria-stabilized zirconia (YSZ) flame sensor to temperature was measured in the range of 873-1 523 K, and the static calibration curve and response characteristics of the sensor were obtained and analyzed. The results show that the linearity of the...

To numerically solve the two-dimensional Euler equations, discontinuous Galerkin method and backward difference formula (BDF) are used as spatial and temporal discretization, respectively. The Newton-Raphson method is taken to solve the nonlinear equations arising from the implicit time integration....

In conventional aerodynamic force mapping methods, conservative interpolation method can ensure the equivalence of the integral load, but the calculation is complex. While the non-conservative interpolation method is simple to implement with consistency of the distribution of aerodynamic pressure, b...

In the distributed complex network environment, collecting the large number of users' behavioral data along with the website data during browsing accurately and comprehensively, efficiently storing them are the basis of user behavior analysis. In order to solve the problems of diversity of data type...

Aimed at the problem that the infrared sensor has a large error, in this paper, based on the combination of spherical coordinates and Cartesian coordinates, a mathematical model of cooperative location is established, and the reason for the large positioning error when the distance between the two m...

In view of the three-petal high-speed floating-ring seal (TFRS) applied in liquid rocket engine, the leakage and wear characteristics of the seal under complex and changeable conditions are revealed, and the sensitive parameters affecting the sealing characteristics are obtained, which promotes the ...

In order to improve the capability of the glide reentry vehicle to respond to dynamic missions and improve the robustness of its guidance system, an online solving method for hypersonic glide re-entry trajectory planning problem is established. The method approximates the original problem by a serie...

For the numerical simulation of fluid-structure interaction with moving boundary, a local Cartesian mesh adaptation method coupling flow field features and geometric features is developed based on immersed finite element method. This method overcomes the inaccuracy of simulating solid motion with a ...

Aimed at the orbit correction problem of space-based laser interferometric gravitational wave detector, a spacecraft orbit correction method based on virtual formation configuration design is proposed. The detector is composed of three spacecraft forming an equilateral triangle configuration. The co...

Aiming at the coupling problem between the inlet and the engine, the integrated control of inlet/engine based on auxiliary door at low speed and high angle of attack is studied. Firstly, a real-time inlet model is established, which is related to the flight conditions, angle of attack, auxiliary doo...

The advantages of DS (Dempster-Shafer) evidence theory in dealing with uncertain information have been widely used in various fields. This paper proposes an improved DS evidence theory algorithm for the existence of evidence conflicts in traditional DS. Firstly, combined with the correlation limitat...

To identify weaknesses in diesel engine systems under strong electromagnetic pulse, a method to study the identification of weak links in diesel engine system is proposed by combined weighted fault tree and hierarchical Bayesian network. This method takes into account the correlation of the failure ...

The lightweight neural network embedded on artificial intelligence (AI) chips can realize the onboard automatic detection of vehicle objects in unmanned aerial vehicle (UAV) videos, which is important in practical applications. In this paper, a vehicle object detection algorithm in UAV videos is pro...

In the process of jamming the target radar, the radiated signal of the phased array-based jammer will also be captured by the enemy's passive detection radar. Based on FDA jammer, this paper proposes an angle deception method for the adjacent amplitude comparison direction finding system. First, the...