Browsing Journal of Aerospace Engineering by Title
Now showing items 1167-1186 of 2238
-
Key Construction Technologies for Large River-Crossing Slurry Shield Tunnel: Case Study
(ASCE, 3/1/2021)With the rapid urbanization and unprecedented development of urban traffic, there is an increasing need for river crossings with large-diameter tunnels in short spans, such as in the Yangtze River Delta, China. In order ... -
KF-Based Multiscale Response Reconstruction under Unknown Inputs with Data Fusion of Multitype Observations
(American Society of Civil Engineers, 2019)Utilization of multitype measurements including local and global information for structural health monitoring (SHM) has typically outperformed that using solo-type measurements. However, in many practical situations, only ... -
KF-Based Multiscale Response Reconstruction under Unknown Inputs with Data Fusion of Multitype Observations
(American Society of Civil Engineers, 2019)Utilization of multitype measurements including local and global information for structural health monitoring (SHM) has typically outperformed that using solo-type measurements. However, in many practical situations, only ... -
Kinematically Coupled Relative Spacecraft Motion Control Using the State-Dependent Riccati Equation Method
(American Society of Civil Engineers, 2015)This paper presents kinematically coupled relative spacecraft motion control in the close proximity of a tumbling target using the state-dependent Riccati equation method for proximity operation mission. In general, a ... -
Kinematics of Excavators (Backhoes) for Transferring Surface Material
(American Society of Civil Engineers, 1994)To use construction machines effectively in the dark, severe weather, or hazardous and/or unhealthy environments, their operations should be controlled automatically. It can be realized if the kinematics and dynamics of ... -
Kinetic Particle Simulations of Plasma and Dust Environments at Robotic Construction Sites near the Lunar Terminator
(ASCE, 2022/11/01)This paper presents a kinetic particle simulation campaign of plasma and dust environments related to excavation and construction activities at the lunar terminator regions. The electrostatic field caused by the local ... -
L1 Adaptive Control of a Projectile Fin by Piezoelectric Actuator
(American Society of Civil Engineers, 2014)In this paper, an -
Laboratory-Scale Distributed Pressure Measurements of Blade Interaction with JSC-1A Lunar Simulant
(American Society of Civil Engineers, 2013)Because of the requirement for high reliability and very low weight, extraterrestrial excavator blade design for in situ resource utilization (ISRU) must be more precise than for current terrestrial practice. Three-dimensional ... -
Lamb Wave–Based Structural Health Monitoring for Aluminum Bolted Joints with Multiple-Site Fatigue Damage
(ASCE, 2022/11/01)In this paper, the Lamb wave based structural health monitoring for aluminum bolted joints with multiple-site fatigue damages was investigated experimentally. In the experiments, the Lamb waves were generated and received ... -
Lambert’s Problem with Multiple Constraints
(ASCE, 2022/06/09)This paper proposes a new method to solve Lambert’s problem with multiple constraints, including the impulse-magnitude constraints, the trajectory-radius constraints, and the terminal-impact-angle constraint. First, the ... -
Large Deployable Space Antennas Based on Usage of Polygonal Pantograph
(American Society of Civil Engineers, 2005)This paper describes large space antenna projects based on application of a closed polygonal pantograph truss used for transforming, deploying, and prestressing the reflector structure. Their reflecting surfaces represent ... -
Large Eddy Simulation of Vortex Shedding from Cubic Obstacle
(American Society of Civil Engineers, 1999)This paper discusses the large eddy simulation technique as applied to vortex shedding from a cubic obstacle placed in a turbulent wind environment and presents results from a recent large-scale computation of this flow. ... -
Large-Amplitude Vibration Analysis of 3D Braided Composite Cylindrical Shells in an Elastic Medium
(American Society of Civil Engineers, 2016)Large-amplitude vibration analysis for a three-dimensional (3D) braided composite cylindrical shell of finite length subjected to static or periodic axial forces has been presented. Based on a new micro-macro-mechanical ... -
Large-Amplitude Vibration Analysis of 3D Braided Composite Cylindrical Shells in an Elastic Medium
(American Society of Civil Engineers, 2016)Large-amplitude vibration analysis for a three-dimensional (3D) braided composite cylindrical shell of finite length subjected to static or periodic axial forces has been presented. Based on a new micro-macro-mechanical ... -
Learning Mappings from Iced Airfoils to Aerodynamic Coefficients Using a Deep Operator Network
(ASCE, 5/19/2023 )This study abstracted the prediction of the aerodynamic coefficients of an iced airfoil as a mapping from the iced airfoil space to the aerodynamic coefficient space. Thus, a deep network called Airfoils2AeroNet that can ... -
Levy Flight Equilibrium Optimizer–Based Wing Design Optimization Using Functional Constraints
(ASCE, 6/16/2023 )This paper presents wing design optimization with functional constraints using the proposed method. The proposed method is an equilibrium optimizer (EO), and it is motivated by controlling the volume mass balance method ... -
Lifetime Performance Assessment of Railway Ballastless Track Systems Affected by a Mortar Interface Defect
(American Society of Civil Engineers, 2019)Defects at the interface between the slab track and the cement asphalt (CA) mortar layer can have significant effects on the dynamic response of a vehicle-track system. This paper proposes a method for analyzing the ... -
Lifetime Performance Assessment of Railway Ballastless Track Systems Affected by a Mortar Interface Defect
(American Society of Civil Engineers, 2019)Defects at the interface between the slab track and the cement asphalt (CA) mortar layer can have significant effects on the dynamic response of a vehicle-track system. This paper proposes a method for analyzing the ... -
Lift and Tip Vortices Generated by Tapered Backward-Swept and Forward-Swept Wings under Stationary Ground Proximity
(ASCE, 6/7/2023 1)An experimental investigation of the aerodynamics and near-field tip-vortex flow field behind tapered backward- and forward-swept wings with a stationary ground effect was conducted at Reynolds number (Re)=1.81×105. The ... -
Line-Based Simultaneous Detection and Tracking of Triangles
(American Society of Civil Engineers, 2018)In order to capture noncooperative targets at close distance, vision-based target detection and tracking have been used as key technologies with great challenges. This paper proposes a novel triangular component detecting ...