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  • Adaptive model reference control of highly maneuverable high performance aircraft

    Creator:
    Collins, David C. (David Charles), 1969-
    Abstract:
    This thesis presents an adaptive model reference controller for a highly maneuverable high performance aircraft, in particular, a modified F18. An adaptive controller is developed to maneuver an aircraft at a high angle of attack. Thus, the aircraft is required to fly over a highly nonlinear flight regime. The adaptive...
    Resource Type:
    Masters Thesis
    Full Text:
    Adaptive model reference control of highly maneuverable

  • Development of a reduced-order dynamic model of a jet-in-crossflow from experimental data

    Creator:
    Pearen, Keith L.
    Abstract:
    A reduced-order dynamic model is derived that captures the primary dynamics of a jet-in-crossflow. This is significant progress toward the end goal of reduced order model based closed-loop flow control. The reduced order model is a set of differential equations obtained through the use of snapshot based Proper Orthogonal Decomposition...
    Resource Type:
    Masters Thesis

  • Interactions of a fully modulated inclined jet with a crossflow

    Creator:
    Dano, Bertrand P. E.
    Abstract:
    Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in...
    Resource Type:
    Dissertation
    Full Text:
    : Interactions of a Fully Modulated Inclined Jet with a Crgssflow. Abstract approved: James A. Liburdy Jets in

  • Modeling the thermal inkjet firing process

    Creator:
    Davis, Colin C.
    Abstract:
    A numerical model has been developed to simulate the firing of an inkjet printhead. The model evaluates the heat generation and diffusion within the thin film structure, the phase change and vapor bubble growth in the ink, and the subsequent flow of ink from the orifice. The heat transfer is...
    Resource Type:
    Masters Thesis
    Full Text:
    growth in the ink, and the subsequent flow of ink from the orifice. The heat transfer model has been

  • Nonlinear control of high performance aircraft

    Creator:
    Bean, Ronnie A.
    Abstract:
    This thesis presents the design of various controllers for a highly maneuverable, high performance aircraft, namely the modified F-18. The aircraft was required to perform high angle-of-attack maneuvers, for which the aircraft behaves in as a highly nonlinear system. An adaptive PID controller was used to control the aircraft through...
    Resource Type:
    Masters Thesis
    Full Text:
    Aircraft Model 3 2.1 The Equations of Motion 5 2.2 Input Dynamics 6 2.3 Simulation 7 3 Model

  • Solid/liquid phase change in small passageways : a numerical model

    Creator:
    Coven, Patrick J.
    Abstract:
    During the operation of phase-change ink-jet printers a bubble formation phenomenon often occurs. These bubbles are detrimental to the operation of the printer and substantial efforts are made to remove them. The objective of this research was 1: to develop a fundamental understanding of how bubble or void formation occurs...
    Resource Type:
    Masters Thesis
    Full Text:
    Numerical Model Abstract approved: During the operation of phase-change ink-jet printers a bubble