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Filtering by: Creator Porrovecchio, Mark J. Remove constraint Creator: Porrovecchio, Mark J. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Dynamic modeling, control aspects and model predictive control of a parafoil and payload system

    Creator:
    Slegers, Nathan J.
    Abstract:
    Control issues are investigated for a parafoil and payload system with left and right parafoil brakes used as the control mechanism. It is shown through dynamic modeling and simulation that parafoil and payload systems can exhibit two basic modes of lateral control, namely, roll and skid steering. Using a small...
    Resource Type:
    Dissertation
    Full Text:
    Nathan J. Slegers for the degree of Doctor of Philosophy in

  • Human gait analysis by gait pattern measurement and forward dynamic model combined with non linear feedback control

    Creator:
    Ko, Seung-uk
    Abstract:
    Normal gait of human is believed to be an adapted motor control result of optimal behavior of individual. Normal gait would be altered by aging or injury without being perceived. Subtle changes in gait which is not easy to detect, can cause many serious problems including joint pains and even...
    Resource Type:
    Dissertation
    Full Text:
    : _______________________________________________________________ Mark F. Costello Normal gait of human is believed to be an adapted motor control result

  • Optimal soaring by a small autonomous glider

    Creator:
    Kyle, Jason A.
    Abstract:
    Extending the flight time of an autonomous unmanned air vehicle by soaring is considered. A suboptimal controller is developed and successful static soaring is demonstrated with a 6 degree of freedom glider model. Altitude gain rates of between ¼ and ½ m/s are achieved with this simple implementation. A hybrid...
    Resource Type:
    Dissertation
    Full Text:
    . Abstract approved: __________________________________________________ Mark F. Costello

  • Natural convection and conduction in a vertical annulus with a concentric baffle : a numerical study

    Creator:
    Fishbaugher, Mark J.
    Abstract:
    Analytical and numerical study of steady-state laminar natural convection and conduction has been performed for an enclosure between concentric vertical cylinders. The inner and outer cylinders were isothermal, and the connecting top and bottom walls were adiabatic. A concentric baffle was included in the annulus, and the flow field and...
    Resource Type:
    Masters Thesis
    Full Text:
    with a concentric baffle : a numerical study AN ABSTRACT OF THE THESIS OF Mark J. Fishbauqher for

  • Ontologies to Support Repeatable and Valid Customer Requirements Generation

    Creator:
    Lemke, Mark T.
    Abstract:
    Due to the growing complexity, sophistication, and interconnectedness of present day engineered products and services, the use of ontologies in engineering design is becoming more widespread. An ontology provides a standardized way of describing concepts in a domain of interest and the relationships between these concepts to better understand the...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Mark T. Lemke for the

  • Two projectiles connected by a flexible tether dropped in the atmosphere

    Creator:
    Frost, Geoffrey W.
    Abstract:
    This study investigates the atmospheric flight dynamics of a munition system and the effect of a tether reel resistance mechanism for limiting the impact that the unreeling process has on the munition system. The munition system consisting of two projectiles connected by a tether line is released from an aircraft...
    Resource Type:
    Masters Thesis
    Full Text:
    Dropped in the Atmosphere. Abstract approved: Mark F. Costello This study investigates the

  • Robust lateral pulse jet control of an atmospheric rocket

    Creator:
    Burchett, Bradley Thomas
    Abstract:
    Uncontrolled direct fire rockets exhibit high impact point dispersion, even at relatively short range, and as such have been employed as area weapons on the battlefield. In order to reduce the dispersion of a direct fire rocket, feedback control is employed to fire short-duration solid rocket pulses mounted near the...
    Resource Type:
    Dissertation
    Full Text:
    Rocket. Abstract approved:_ ________ Mark F. Costello Uncontrolled direct fire rockets exhibit high

  • Lateral pulse jet control of a direct fire atmospheric rocket using an inertial measurement unit sensor system

    Creator:
    Jitpraphai, Thanat
    Abstract:
    Impact point dispersion of a direct fire rocket can be drastically reduced with a ring of appropriately sized lateral pulse jets coupled to a trajectory tracking flight control system. The system is shown to work well against uncertainty in the form of initial off-axis angular velocity perturbations as well as...
    Resource Type:
    Dissertation
    Full Text:
    . Abstract approved: Mark F. Costello Impact point dispersion of a direct fire rocket can be drastically

  • Modified linear theory and Kalman filtering for in flight projectile impact point prediction

    Creator:
    Hainz, Leonard C.
    Abstract:
    A method for real time in-flight prediction of the ground impact point of an indirect fire projectile is investigated. The method investigated is comprised of a combination of an impact point predictor and an extended Kalman filter state estimator based on modified linear theory. The modified linear theory model is...
    Resource Type:
    Masters Thesis
    Full Text:
    Prediction. Abstract approved: Mark F. Costello A method for real time in-flight prediction of the

  • Solutions of plate equation for the prediction of ink droplets in inkjet cartridges

    Creator:
    Sangplung, Saangrut
    Abstract:
    Droplet formation in inkjet cartridges has been studied for several decades to improve print qualities. Currents and rigid nozzle plates are used inside the cartridge to fix the size of droplets exiting the chamber. This research is focused on studying the effect of nozzle flexibility on droplet formation. A flexible...
    Resource Type:
    Masters Thesis
    Full Text:
    Plate Equation for the Prediction of Ink Droplets in Inkiet Cartridges. Abstract approved: Mark F