Browsing Journal of Aerospace Engineering by Title
Now showing items 21-40 of 2238
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A Novel Control Surface for Energy-Optimum Maneuver for Solar-Powered Aircraft
(ASCE, 2024/01/01)This paper presents a new control surface, which we have named auxiron, that helps a solar-powered aircraft to orient itself according to the position of the sun in the sky to collect more solar power. The auxiron also ... -
A Novel Unsteady Vortex Ring Method for Aerodynamic Calculations of a Flapping Wing Rotor
(ASCE, 2024/03/01)A new bio-inspired flapping wing rotor (FWR) configuration combining the high lift of a flapping wing (FW) with the vertical take-off and landing characteristics of a rotor has proved its concept feasibility in the last ... -
A Turboshaft Aeroengine Fault Detection Method Based on One-Class Support Vector Machine and Transfer Learning
(ASCE, 2022/11/01)The fault detection of turboshaft engines is very important to ensure the flight safety of helicopters. Because there are few fault data in engine historical operation data, engine fault detection is often regarded as an ... -
A Zero-Dimensional Physics–Based Model to Guide Supersonic Rotor Design of a Counterrotating Compressor
(ASCE, 7/26/2023 )The counterrotating compressor of Rotor-Rotor-Stator (R/R/S) layout is considered to be a crucial technical path for engine thrust-to-weight improvement because it can achieve a high-pressure rise level with low weight and ... -
Acceleration Feedback-Based Active and Passive Vibration Control of Landing Gear Components
(American Society of Civil Engineers, 2002)In this paper, a novel methodology is developed to absorb the vibrations of relatively large-scale aircraft structures such as landing gear components. This is accomplished using a combination of active and passive controls. ... -
Accelerometer-Based Force Balance for High Enthalpy Facilities
(American Society of Civil Engineers, 2010)A single component accelerometer-based force balance is developed, calibrated, and used for high enthalpy applications. Functionality of this force balance, for such applications, is demonstrated for the first time during ... -
Access to Space—Systems and Technologies to Support It
(American Society of Civil Engineers, 1997)Many of the launch systems that are used by the United States to send payloads to orbit trace their heritage to military systems of the 1950s and 1960s. Even with launch systems built on more recent technology, the cost ... -
Achieving a High-Speed and Momentum Synthetic Jet Actuator
(American Society of Civil Engineers, 2016)A detailed analysis of a finite-span synthetic jet in a quiescent fluid is presented, with the goal of achieving a high speed and momentum synthetic jet, with a peak velocity exceeding -
Acoustic Control of Flow over NACA 2415 Airfoil at Low Reynolds Numbers
(American Society of Civil Engineers, 2016) -
Acoustical Properties of Electrospun Fibers for Aircraft Interior Noise Reduction
(American Society of Civil Engineers, 2012)High–surface area micro-and nanoscale electrospun fibers were produced for noise-reduction purposes using three different polymers: polyvinylpyrrolidone (PVP), polystyrene (PS), and PVC. These polymers were initially ... -
Active Control of Flexural Vibrations in Beams
(American Society of Civil Engineers, 1989)The feasibility of using piezoelectric actuators to control the flexural oscillations of large structures in space is investigated. Piezoelectric actuators have the advantage of exerting localized bending moments. In this ... -
Active Control of Stay Cable Vibration Using a Giant Magnetostrictive Actuator
(American Society of Civil Engineers, 2018)Although giant magnetostrictive actuators (GMAs) have been widely studied in the field of active vibration control, the effectiveness of GMAs to control the vibration of cable structures has not been reported yet. This ... -
Active Control of Structures in Nonlinear Response
(American Society of Civil Engineers, 1988)The need to account for geometric and material nonlinearities in the active control of highly flexible, large, space structures is emphasized herein. The performance index of the control problem is minimized subject to ... -
Active Control of Tensegrity Systems
(American Society of Civil Engineers, 1998)Tensegrity systems have been known for almost half a century. Their mechanical and geometrical characteristics make them suitable to terrestrial and extraterrestrial applications. This paper describes a numerical scheme ... -
Active Disturbance Rejection Control for Hypersonic Flutter Suppression Based on Parametric ROM
(ASCE, 11/1/2020 )This paper presents an active disturbance rejection control algorithm (ADRC) to suppress the hypersonic flutter of a three-degrees-of-freedom (3-DOF) two-dimensional (2D) airfoil operating in multiparameters space. In this ... -
Active Fault-Tolerant Control of UAV Dynamics against Sensor-Actuator Failures
(American Society of Civil Engineers, 2016)In this paper, an active fault-tolerant flight control system against sensor/actuator failures for unmanned aerial vehicles (UAVs) is proposed. First, an approach to detecting and isolating UAV sensor failures affecting ... -
Active Fault-Tolerant Control of UAV Dynamics against Sensor-Actuator Failures
(American Society of Civil Engineers, 2016)In this paper, an active fault-tolerant flight control system against sensor/actuator failures for unmanned aerial vehicles (UAVs) is proposed. First, an approach to detecting and isolating UAV sensor failures affecting ... -
Active Flutter Suppression for a T-Tail via Optimal Control
(ASCE, 5/19/2023 )A new generation of transport aircraft increasingly adopts T-tail configurations for their excellent aerodynamic, operating, and structural performance. However, flutter of T-tail configurations is a serious dynamic ... -
Active Magnetic Control Methods for Small Satellite
(American Society of Civil Engineers, 2003)A small satellite is likely to tumble as the result of separating from the rocket. It is therefore very important to capture it promptly with finite magnetic torque. Magnetic torque is orthogonal to the external magnetic ... -
Active Shape Adjustment of Large Cable-Mesh Reflectors Using Novel Fast Model Predictive Control
(American Society of Civil Engineers, 2018)Active shape adjustment of a cable-mesh reflector is a significant procedure to compensate the effects of a complicated space environment in orbit. In this paper, the active shape adjustment of a large cable-mesh reflector ...