Journal of Aerospace Engineering: Recent submissions
Now showing items 121-140 of 2380
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Experimental Exploration of Bioinspired Planar Wingtip Devices for a Flat-Plate Wing in the Low Reynolds Number Regime
(American Society of Civil Engineers, 2024)This study investigates the use of planar wingtip attachments to improve the lift generating performance of low aspect ratio (AR) flat-plate wings in the low Reynolds number (Re) range (<105). Inspired by nature’s ... -
An Evaluation of Torque Characteristics of a Spherical Magnetohydrodynamic Attitude Control Device
(American Society of Civil Engineers, 2024)This study presents an innovative approach to attitude control in microsatellites by utilizing a spherical magnetohydrodynamic attitude control device (MHD-SACD) for three-axis attitude adjustments. A novel method is ... -
Determining Peak Shock Pressure and Cratering due to Hypervelocity Meteoroid Impact on Lunar Structures for Engineering Design
(American Society of Civil Engineers, 2024)Lunar bases for long-term human habitation are a topic of growing interest to engineers. Structures to be built on the surface of the Moon must be designed to resist extreme environmental hazards such as hard vacuum/no ... -
Optimal Scheduling of K-M-N GEO On-Orbit Service Network Based on Hybrid Simulated Annealing Algorithm
(American Society of Civil Engineers, 2024)A K-M-N on-orbit service network architecture and its mission scheduling problem are proposed and studied, in which K space service stations and M service spacecraft are scheduled to service for N target spacecraft. The ... -
Numerical Investigation of the Effect of the Cavity on Flow Control of Continuous Pulses Opposing Plasma Synthetic Jets in Hypersonic Flow
(American Society of Civil Engineers, 2024)Pulse opposing plasma synthetic jets (OPSJs) have potential for reducing the drag coefficient of hypersonic airfoils. This paper numerically investigated the effects and flow control mechanisms of a continuous nanosecond ... -
Topology Optimization of 3D Turbine Disk Considering Thermal Load Based on BESO Method
(American Society of Civil Engineers, 2024)To achieve a high thrust-to-weight ratio engine design, topology optimization design of the turbine disk structure is carried out. Considering centrifugal load and thermal load, a topology optimization algorithm program ... -
Neural Network Reentry Guidance for Reusable Launch Vehicle Based on Sample Dimensionality Reduction
(American Society of Civil Engineers, 2024)In this paper, a neural network guidance based on sample dimension reduction is proposed for a reusable launch vehicle. Different from previous works, the training samples of neural networks use Pearson correlation matrix ... -
Trajectory Planning and Control of Multiple Quadcopters for Mars Exploration
(American Society of Civil Engineers, 2024)The trajectory optimization of multiple quadcopters for Mars exploration has been a challenging task due to a difficult nonconvex space formed by multiple quadcopters in the flight, the complex dynamics model, and complicated ... -
Aerodynamic and Aeroacoustic Optimization of UAV Rotor Based on Proper Orthogonal Decomposition Method
(American Society of Civil Engineers, 2024)Aiming at raising the efficiency of multidisciplinary optimization of UAV rotor aerodynamics and aeroacoustics, this paper established a low-order method of rotor aerodynamics and noise prediction based on lifting line ... -
Autonomous Navigation for Cellular-Connected UAV in Highly Dynamic Environments: A Deep Reinforcement Learning Approach
(American Society of Civil Engineers, 2024)This study investigated the navigation problem for cellular-connected unmanned aerial vehicles (UAVs), particularly in highly dynamic urban environments. To address this problem, the UAV is required not only to evade ... -
Saturation-Optimized Quasi-Sliding-Mode Calming Control of Free-Flying Space Robots Based on Model-Free Adaptive Control Theory
(American Society of Civil Engineers, 2024)This paper proposes a saturation-optimized, quasi-sliding-mode model-free adaptive control (SM-MFAC) method to control the postcollision calming motion of an unstable free-flying space robot with saturated output torque. ... -
Orbit Design and Optimization for Point Target Revisit in LEO-LEO Occultation
(American Society of Civil Engineers, 2024)To realize atmospheric monitoring missions for carbon neutrality, this paper proposes an low earth orbit (LEO)-LEO occultation orbit design and optimization method for the user-specified point target revisit problem. First, ... -
Camber Effects on the Leading-Edge Suction, Forces, and Vortex Dynamics of Unsteady Airfoils
(American Society of Civil Engineers, 2024)Understanding the effect of airfoil geometry on the criticality of leading-edge suction is key to modeling the leading-edge vortex (LEV) dynamics of unsteady airfoils in a simple and robust manner. The current work aimed ... -
Robust Optimization of the Secondary Air System Axial Bearing Loads with the Labyrinth Clearance Uncertainty
(American Society of Civil Engineers, 2024)The secondary air system of a gas turbine engine is a complex fluid network that is sensitive to geometric variations in the flow elements caused by manufacturing, assembly, and operating conditions. Geometric uncertainty ... -
A Simple Numerical Framework for Finite Deflection of Piezoelectric Beams
(American Society of Civil Engineers, 2024)Piezoelectric materials can develop mechanical strain upon applying electric voltage and vice-versa. A piezoelectric bimorph, widely used in various sensors and actuator applications, essentially behaves like a beam and ... -
Development of a Mathematical Model of a Coaxial Compound Helicopter for Trimming and Stability Analysis
(American Society of Civil Engineers, 2024)The coaxial compound helicopter has been offered as an idea for a high-performance rotorcraft that possesses high-speed qualities that conventional helicopters do not. This work seeks to create a flight dynamics model of ... -
Transonic Buffet in Flow Past a Low-Reynolds-Number Airfoil
(American Society of Civil Engineers, 2024)For propeller-driven Mars airplanes operating at low Reynolds numbers, the speed of the rotor tips may reach transonic. To date, only a few studies have investigated the transonic buffet in flow past low-Reynolds-number ... -
A Novel Metric-Based Geometric Parameterization Approach with Performance Filtration
(American Society of Civil Engineers, 2024)In the approach of metric-based geometric parameterization, the concept of database filtration and proper orthogonal decomposition manipulation quantitatively enhances the generation of new geometric parameters so that the ... -
Multiobjective Optimization of Scramjet Strut Geometry Using Computational Fluid Dynamics Approach
(American Society of Civil Engineers, 2024)The purpose of this paper is to discuss a study aiming to optimize the performance of a DLR-type scramjet engine using computational fluid dynamics (CFD). For this purpose, the response surfaces technique is employed to ... -
Aerodynamic Parameter Estimation for Near-Stall Maneuver Using Neural Networks and Artificial Bee Colony Algorithm
(American Society of Civil Engineers, 2024)Accurate numerical values of aerodynamic parameters are important in aircraft design. The knowledge of stability and control aerodynamic parameters is essential to postulate high-fidelity control laws. The aerodynamic ...