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Browse Dept. of Aerospace Engineering by Title
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(2003)Vortex structures observed in the shear layer were presumed to be the cause of largescale pressure fluctuations upstream of reattachment at small angles of attack. Pressure spectra near reattachment exhibited wide bandwidth ...
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(2007)Previous iced airfoil investigations have demonstrated somewhat reduced aerodynamic penalties resulting from a threedimensional ice simulation, compared to those of a twodimensional ice simulation of a representative ...
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(20130524)The goal of this thesis is to identify potential NearEarth Asteroids (NEAs) that are viable candidates for human exploration. The computational method incorporated to help identify these targets is the particle swarm ...
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(1998)The results of this study demonstrate that boron particle lifetimes at elevated pressures are sufficiently short to make these particles suitable for additives to propellants and that smaller 110 $\mu$m sized particles, ...
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(20180427)This thesis proposes an integrated simulation tool to evaluate the impact of future inspace additive manufacturing (ISAM) and recycling technologies on the responsiveness of an onorbit servicing (OOS) infrastructure to ...
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(1995)Improved collocation methods for the solution of a set of ordinary differential equations are developed and used to solve minimumtime, Earthmoon orbit transfers. These collocation methods are based on a family of modified ...
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(2005)An improved collocation method is developed for a class of problems that is intractable, or nearly so, by conventional collocation. These are problems in which there are two distinct timescales of the system states, that ...
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(20150715)In this thesis, we present a modelbased observer for inertial navigation of quadrotors and other multirotor aircraft. We include in our model a Coriolis term that has been neglected in prior work. Doing so allows us to ...
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(20180427)The University of Illinois has developed the IlliniSat2 CubeSat bus, a generic scalable and modular design, utilizing commercially available off the shelf (COTS) parts. The Attitude Determination and Control System (ADCS) ...
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(1988)A new solution procedure was developed to solve the Euler equations for steady, compressible, rotational, inviscid flows. The approach is aimed to achieve real inviscid solutions in Euler calculations by eliminating the ...
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(20161123)Global Positioning System (GPS) receivers are increasingly used for positioning in urban environments and precise timing in critical infrastructures. These scenarios are challenging for GPS receivers because building ...
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(20110525)This work aims to maximize usable run time of direct sodium borohydride / hydrogen peroxide (NaBH4 / H2O2 ) proton exchange membrane fuel cell, given a fixed volume of fuel solution . In the fuel cell being developed here ...
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(20180425)The influence of aspect ratio, AR, on the unsteady aerodynamics of pitching wings was examined by comparing experimental performance, flow measurements, and computational results across a range of different AR wings. ...
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(20130822)This thesis is divided in two parts. First, after presenting the modeling of the system in the deterministic and stochastic case, the controllability of one, then two Unmanned Aerial Vehicles (UAVs) manoeuvring in a ...
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Instability of Oscillatory Flow in Ducts and Applications to Solid Propellant Rocket Aeroacoustics (2002)Prior research has shown that oscillatory or modulated flows can achieve a significant increase in heat transfer relative to the corresponding steady flow, providing that a critical or threshold amplitude is achieved. The ...
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(20150121)The interaction between an impinging conical shock wave with a plane compressible turbulent boundary layer has been studied at Mach 2.05. Surface oil flow and pressuresensitive paint (PSP) data were obtained beneath the ...
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(20180713)Selfassembled monolayers (SAMs) are short (nanometersize) organic chains terminated by functional groups that can be selected to tailor the electrical, thermal and/or mechanical properties of interfaces. In this thesis, ...
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(20140530)This work discusses the chemical kinetics of nitrogen molecules relaxing in a heat bath at constant temperature in a background gas composed of electrons and nitrogen atoms. The QCT (QuasiClassical Trajectory) model ...
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(20140116)Inverse optimal control is the problem of computing a cost function with respect to which observed state input trajectories are optimal. We present a new method of inverse optimal control based on minimizing the extent to ...
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(20120522)The problem of inverse optimization is to find the objective function that is being minimized, given knowledge of the constraints and observations of local minima. In this thesis, we consider the special case in which the ...
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Now showing items 219238 of 506