Browsing AE Research Publications by Title
Now showing items 103-122 of 182
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Machine learning applied to programming quantum computers
(American Institute of Aeronautics and Astronautics, 2019-01-06)We apply machine learning to “program” quantum computers, both in simulation and in experimental hardware. A major difficulty in quantum computing is developing effective algorithms that can be programmed on a quantum ... -
Minimizing errors from linear and nonlinear weights of WENO scheme for broadband applications with shock waves
(Elsevier, 2013-03-29)Improvements in the numerical algorithm for the dynamics of flows that involve discontinuities and broadband fluctuations simultaneously are proposed. These two flow features suggest numerical strategies of a paradoxical ... -
Minimizing proton displacement damage dose during electric orbit raising of satellites
(American Institute of Aeronautics and Astronautics, 2016-04)Although electric propulsion systems have been used in deep space missions for performing interplanetary transfers, their use has primarily been restricted to station-keeping purposes for Earth-orbiting satellites. ... -
Minimum-fuel electric orbit-raising of telecommunication satellites subject to time and radiation damage constraints
(IEEE, 2014-06-04)The capability of a Geostationary satellite to perform electric orbit-raising enables the development of all-electric satellites. Key challenges to the realization of electric deployment of satellites to the Geostationary ... -
Mission scenario analysis for all-electric satellites
(American Institute of Aeronautics and Astronautics, Inc., 2018-01-08)In this paper, we consider the problem of orbit-raising of all-electric satellites deployed in the geosynchronous equatorial orbit (GEO). We present an optimization framework that incorporates a novel dynamic model of a ... -
Modified state observer based adaptation of a general aviation aircraft - simulation and flight test
(American Institute for Aeronautics and Astronautics, 2014-01)This paper presents some issues encountered while flight testing a Model Reference Adaptive dynamic inverse controller (MRAC), on a General Aviation (GA) fly-by-wire test bed. Adaptation was replaced with a Modified ... -
Modified State Observer based adaptive control law design for the Black Kite MAV
(IEEE, 2014-06-04)This paper presents the design and simulation of a Modified State Observer (MSO) based adaptive control law, developed by Balakrishnan, for a Micro Aerial Vehicle (MAY). The MSO allows higher adaptive gains than other ... -
MPI/Open-MP hybridization of higher order WENO scheme for the incompressible Navier-Stokes equations
(American Institute of Aeronautics and Astronautics, 2015-01)With the contemporary emerging transition for the past two decades in high performance computing (HPC) towards clusters of nodes, it is possible to obtain an efficiently scalable CFD code by hybridization of Message ... -
Multimodal combination of text and image tweets for disaster response assessment
(CEUR-WS, 2022-07-06)Social media platforms are a vital source of information in times of natural and man-made disasters. People use social media to report updates about injured or dead people, infrastructure damage, missing or found people ... -
Multiqubit entanglement of a general input state
(Rinton Press, Inc., 2013-01)Measurement of entanglement remains an important problem for quantum information. We present the design and simulation of an experimental method for an entanglement indicator for a general multiqubit state. The system can ... -
Multispectral deep learning models for wildfire detection
(CEUR-WS, 2022-07-06)Aided by wind, all it takes is one ember and few minutes to create wildfire. Wildfires are growing in frequency and size due to climate change. Wildfires and its consequences are one of the major environmental concerns. ... -
Neural network based adaptive controller for attitude control of all-electric satellites
(Univelt Inc., 2015)This paper considers the attitude control problem for an all-electric spacecraft during its transfer to the Geostationary Earth orbit. During the transfer, the spacecraft's solar arrays need to point towards the Sun, except ... -
A novel methodology for fast and robust computation of low-thrust orbit-raising trajectories
(Univelt, Inc., 2017)All-electric spacecraft makes numerous revolutions during the orbit-raising to the geosynchronous equatorial orbit. This paper presents a new mathematical formulation to describe the dynamics of the spacecraft under the ... -
Numerical Analysis of Effects of Leading-Edge Protuberances on Aircraft Wing Performance
(American Institute of Aeronautics and Astronautics, 2012-09)The effects of biologically inspired leading-edge protuberances on aircraft wings were investigated by using a numerical scheme. Simulations were performed at a Reynolds number of 5.7 x 10(5) on wings with leading-edge ... -
Numerical assessment of pulsatile flow through diverging tees with a sharp- and round-edge junction
(Elsevier, 2019-04)Unsteady flow through diverging tees is of interest in many industrial systems and physiological applications. In this study, the characteristics of the transient flow behaviors at the junctions of diverging tees with ... -
A numerical investigation of the onset of flow separation in round-edge diverging tees
(ASME, 2018-03)The onset condition of flow separation in diverging tee junctions was investigated numerically. Flow separation and recirculation at the proximal region of a bypass graft can contribute to early phase graft failure in ... -
Numerical simulation and experimental comparison of the R12, R22 and R134a flow inside straight and coiled helical capillary tubes
(© Springer International Publishing AG, Part of Springer Science+Business Media, 2016-03)This paper presents a numerical simulation for adiabatic condition of the R12, R22 and R134a flow through straight and helically capillary tubes and also an experimental investigation of the R134a flow inside straight and ... -
Numerical simulation of wall-pressure fluctuations due to a turbulent boundary layer
(AMER INST AERONAUT ASTRONAUT, 2012)In this investigation, wall-pressure fluctuations due to a turbulent boundary layer are estimated by various numerical methods. Four different turbulence models, including one- and two-equation models and a recently developed ... -
Numerical simulations of pulsatile flow in an end-to-side anastomosis model
(Tech Science Press, 2007-03)A potential interaction between the local hemodynamics and the artery wall response has been suggested for vascular graft failure by intimal hyperplasia (IH). Among the various hemodynamic factors, wall shear stress has ... -
Numerical-based comparison among critical flow properties of HFC-134a and its new alternatives HFO-1234yf and HFO-1234ze through short-tube orifices
(American Society of Mechanical Engineers, 2015)Although HFC-134a is a common refrigerant for residential and mobile refrigeration systems, investigators are dealing with replacing it with new alternatives because of its harmful environmental and global warming effects. ...