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Browse Dept. of Aerospace Engineering by Title
Now showing items 407-426 of 506
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(2017-02-17)Nanostructured metals possess ultra-high mechanical strength. A well-established consensus is that the deformation behaviors of these materials are governed by the extremely high density of interfaces. Previous studies ...
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(2014-05-30)A majority of the efforts in modeling crack propagation have used continuum models built upon partial derivatives with respect to the spatial coordinates in the force and displacement relationship. These methods are ...
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(2018-04-13)First part of this thesis (chapters 1-5) studies the effect of small noise perturbations on delay differential equations (DDE) whose fixed point is on the verge of instability. With appropriate scaling of coordinates, the ...
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(1980)The primary objective of the present study is to assess the effects of gravity force and vertical component of earthquake acceleration on the seismic response of structures. These effects have not been adequately investigated ...
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(1967)
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(2019-12-09)Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs) are used for a wide variety of missions such as exploration and scientific research. One key challenge for these autonomous vehicles is the creation ...
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(2019-04-18)The study of vehicles traveling at hypersonic speeds is extremely complex and involves many different non-equilibrium physical phenomena occurring on many different time-scales. As a result, work focused on modeling this ...
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(2019-09-19)The non-equilibrium aerothermal environment during hypersonic flows is determined by the interaction between a multitude of disparate physical phenomena with varying characteristic time scales. The multi-physics nature of ...
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(2004)In recent flight tests the X-38 reentry test vehicle spins during the deployment of the drogue parachute. An experimental aerodynamic study has been conducted at the University of Illinois using a scale model of the X-38 ...
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(1992)Three main topics related to structural reliability and load testing are investigated in this dissertation. These consist of evaluation methods for reliability analysis given test information, advanced strength modeling ...
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(2012-09-18)The mean and gradient residual stresses and the failure behavior of individual layers in inorganic thin film photovoltaics were investigated. The thin film photovoltaics consisted of an amorphous silicon (Si) p-n junction ...
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(2012-02-06)Flapping flight micro aerial vehicles (MAVs) are of interest to the aerospace and robotics communities for their maneuverability in comparison to tradition fixed wing and rotary aircraft. However they present numerous ...
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(1990)The effects of random external excitation on systems with marginally stable/unstable (critical) modes undergoing a soft loss of stability is examined within the context of bifurcation theory. Physically the problem is ...
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(2018-07-10)The development of a new spacecraft trajectory design method most often occurs because a particular capability does not exist. The invention is usually considered successful so long as it is capable of producing solutions ...
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(2012-12)In this work, hypervelocity flows over double cone and double wedge geometries are studied. The flow configurations established over the double cone/double wedge models are extremely sensitive to thermochemistry, and thus ...
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(2015-01-21)Polymeric nanostructures are quite distinct because of the large ratio of surface-to-volume macromolecules which result in very different physical and mechanical behavior compared to bulk. Of special interest are nanostructures ...
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(1971)
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(1984)The effect of random air turbulence on the coupled flap-lag motion of a helicopter rotor blade in forward flight is investigated. By assuming white noise turbulence and applying a special case of the stochastic averaging ...
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Now showing items 407-426 of 506