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Filtering by: Creator Su, X. Remove constraint Creator: Su, X. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Kinematic analysis of legged system locomotion on smooth horizontal surfaces

    Creator:
    Baek, Yoon Su
    Abstract:
    This thesis presents a model of legged locomotion in which position and velocity of body are directly controlled by positions and velocities of feet. One central relationship between foot acceleration, leg stroke and body velocity is developed. Procedures for determining all parameters of a step sequence including periods of constant...
    Resource Type:
    Dissertation
    Full Text:
    horizontal surfaces AN ABSTRACT OF THE THESIS OF Yoon Su Baek for the degree of Doctor of PhilcBcplay in

  • Kinematic analysis of walking machine foot trajectory

    Creator:
    Su, I-chih
    Abstract:
    A method to design foot trajectory in Cartesian coordinates for a six-leg walking machine is presented in this thesis. The walking machine is based on the geometry of the darkling beetle. The walking procedure developed by Y.S. Baek is introduced first to provide step length and leg swing time for...
    Resource Type:
    Masters Thesis
    Full Text:
    ABSTRACT OF THE THESIS OF I-Chih Su for the degree of Master of Science in Mechanical Engineering

  • Experimental Characterization of a Supercritical Carbon Dioxide Microchannel Solar Thermal Receiver

    Creator:
    L'Estrange, Thomas
    Abstract:
    Characterization of a microchannel solar thermal receiver for supercritical carbon dioxide (sCO₂) is presented. The receiver design is based on conjugate computational fluid dynamics and heat transfer simulations as well as thermo-mechanical stress analysis. Two lab scale receivers with a 2x2 cm² absorber area are fabricated and experimentally characterized -...
    Resource Type:
    Masters Thesis
    Full Text:
    200 bar. Following the successful test of the 2 x 2 cm lab-scale receiver, a larger 8x8 cm2

  • Fracture toughness of void-site-filled skutterudites

    Creator:
    Eilertsen, James S.
    Abstract:
    Thermoelectric materials are playing an increasingly significant role in the global effort to develop sustainable energy technologies. Consequently, the demand for materials with greater thermoelectric efficiency has stimulated the development of state-of-the-art interstitially doped skutterudite-based materials. However, since intermetallics are often embrittled by interstitial substitution, optimal skutterudite-based device design, manufacture,...
    Resource Type:
    Masters Thesis
    Full Text:
    were analyzed by X-ray diffraction, and then sintered by hot uniaxial pressing into dense pellets

  • The effects of pulsing and blowing ratio on a 45° inclined jet in cross flow

    Creator:
    Stander, Arjan
    Abstract:
    The effect of jet flow pulsing and blowing ratio on a jet in cross flow has been investigated. Preliminary jet flow studies were performed without cross flow and an extensive study of jet with cross flow was done for a total of nine test cases. The effect of velocities ratios...
    Resource Type:
    Masters Thesis
    Full Text:
    jet, but did not seem to affect the RMS levels and Reynolds stresses beyond x/d =4. Jet pulsing had

  • Stability and Liftoff of Non-premixed Large Hydrocarbon Flames in MILD Conditions

    Creator:
    Walters, Eric M.
    Abstract:
    The Moderate or Intense Low-oxygen Dilution (MILD) combustion regime has received interest from the industrial furnace and gas turbine engine industries due to attractive properties of reduced NO[subscript x] emissions and high thermal efficiency. MILD combustion is characterized by low oxygen concentrations (i.e. 3%-9% by volume) and high reactant temperatures....
    Resource Type:
    Masters Thesis
    Full Text:
    ms and images are captured at 1.5Hz with a resolution of 700 x 280 pixels. The spatial resolution is

  • Laboratory creep studies on "Pheasant" and "Expanded" aluminum conductors

    Creator:
    Wilson, Laurence Martin
    Resource Type:
    Masters Thesis
    Full Text:
    Specimens. 28 Creep Testing Conditions 30 Initial Creep of X(AFC) 35 Final Creep Strain 39 Results

  • Numerical and Experimental Investigation of Wing Flutter Suppression via Distributed Propulsion

    Creator:
    Anderson, Cole J.
    Abstract:
    In a seminal paper published in 1982, scientist have warned that humanity was pushing earth’s ecosystems beyond their capacities to support the web of life. One response to the concern was outlined by NASA with its vision for advanced fixed wing transport aircraft to be environmentally compatible and have revolutionary...
    Resource Type:
    Masters Thesis
    Full Text:
    Page 1. Definition of pitch and plunge degrees-of-freedom8…………………….……2 2. The X-56A MUTT aircraft14

  • Determination of stresses in riveted lap joints by the photoelastic method

    Creator:
    Bailey, Charles Ogden
    Resource Type:
    Masters Thesis
    Full Text:
    ....... 44 Figure 16. Fringe Order vs x for Sections I, IX 1&ode3. 11'«. . . 45 Figuro 17. Fringe Order vs

  • Modeling, control, and estimation of flexible, aerodynamic structures

    Creator:
    Ray, Cody W.
    Abstract:
    Engineers have long been inspired by nature's flyers. Such animals navigate complex environments gracefully and efficiently by using a variety of evolutionary adaptations for high-performance flight. Biologists have discovered a variety of sensory adaptations that provide flow state feedback and allow flying animals to feel their way through flight. A...
    Resource Type:
    Dissertation
    Full Text:
    % noise . . . . . . . . . . . 133 6.20 Exact load one: P z = 200 sin(⇡x) sin(⇡y