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  • Comparison of the Accuracy and Applicability of Forebody Wake Effect Models for Parachute System Design

    Creator:
    Kemling, Gabriel H. and Blunck, David L.
    Abstract:
    The forebody wake effect (FWE) is important to consider when designing parachute systems because it can affect parachute performance. Parachutes work by altering the aerodynamic properties of an attached forebody to control a descent. The FWE can reduce parachute drag, causing the system to descend faster than desired. This drag...
    Resource Type:
    Research Paper
    Full Text:
    based on information within the respective journal paper for each model. This is due to a lack of

  • Evaluation of total hip arthroplasty research in the US and Europe

    Creator:
    Simmons, Marcy J.
    Abstract:
    Background: Hip replacements are considered routine operations which improve the quality of life in patients by reducing pain and restoring function. There are many variations in prostheses with varying benefits and disadvantages. Methods: Literature from the United States and Europe was collected on total hip replacements between 2001 and the...
    Resource Type:
    Research Paper
    Full Text:
    Simmons 1 Evaluation of Total Hip Arthroplasty Research in the US and Europe by Marcy J

  • Feasibility of utilizing an integrating nephelometer to measure visibility

    Creator:
    Nelson, William George
    Abstract:
    An integrating nephelometer was set up at the Eugene Airport which is located five miles north of Eugene, Oregon, on Highway 99 West. Continuous atmospheric scattering coefficient readings were obtained from July 1, 1969, to August 28, 1969. These data are converted to meteorological range through the use of the...
    Resource Type:
    Masters Thesis
    Full Text:
    Meteorology Research, Inc. under license from the Battelle Development Corpo- ration. The basic function of

  • Airborne sampling of particles emitted to the atmosphere from Kraft paper mill processes and their characterization by electron microscopy

    Creator:
    Augustine, Frank Edward
    Abstract:
    A high volume sampling system, employing Nuclepore filters and designed for sampling particulate in the plumes from industrial sources using a light aircraft, is described. The effluent of kraft paper mills was sampled using this system and then analyzed by electron microscopy. Size distributions of particles were obtained at several...
    Resource Type:
    Dissertation
    Full Text:
    Airborne Sampling 7 Application of Electron Microscopy to Air Pollution Research 10 Particulate Sizing and

  • Partial recirculation of diesel engine exhaust for the reduction of oxides of nitrogen

    Creator:
    Addicott, Donald James
    Abstract:
    Oxides of nitrogen are a concern as effluents to atmospheres because they participate in photochemical reactions which produce smog, because they attenuate sunlight which gives the atmosphere a reddish brown cast, and because of their toxic properties and the health hazards associated with the photochemical products they produce. Oxides of...
    Resource Type:
    Masters Thesis
    Full Text:
    Partial recirculation of diesel engine exhaust for the

  • An Improved Chemical Kinetic Model Reduction in pyMARS for Liquid Propellants

    Creator:
    Moore, Cailin J.
    Abstract:
    The aerospace industry uses chemical kinetic models when designing propulsion systems to acquire specific details about the rate of chemical reactions, heat release, and combustion stability. These models, however, are too large and stiff to be useful as they can take weeks to run computations on. The pyMARS python package...
    Resource Type:
    Honors College Thesis
    Full Text:
    research with established reduction algorithms to accu- rately reduce the size of these models to only the

  • Assessing Mass Diffusion Modeling in Premixed Flames

    Creator:
    Fillo, Aaron J.
    Abstract:
    Implementing multicomponent diffusion in numerical combustion studies is computationally expensive due to the challenges involved in computing diffusion coefficients. As a result, mixture-averaged diffusion treatments or simpler methods are used to avoid these costs. However, the accuracy and appropriateness of the mixture-averaged diffusion model has not been verified for three-dimensional...
    Resource Type:
    Dissertation
    Full Text:
    -DGE and CBET-1761683. This research used resources of the National Energy Research Scientific

  • Quality driven collaborative decision making for product development under the influence of trustworthiness

    Creator:
    Meier, Stefan
    Abstract:
    The focus of this study is the effective prioritization of customer requirements in collaborative product development. The CR priorities are often retrieved by questioning and interviewing targeted customers. But the targeted customer might not always be easily questioned, because they might not always be obvious or clearly known. If customers...
    Resource Type:
    Masters Thesis
    Full Text:
    challenging questions to improve the research work and for his large contribution to the technical part of

  • Computational Modeling of Smoldering Combustion in Wildland Fuels

    Creator:
    Jayasuriya, Waduge Jayani A.
    Abstract:
    Smoldering combustion in wildland fires is a critical phenomenon that needs in-depth study because it can initiate with weaker ignition sources, can persist for long periods, is difficult to suppress, and can transit to flaming combustion. Cellulose, hemicellulose, and lignin are the major organic constituents within biomass, in varying proportions...
    Resource Type:
    Dissertation
    Full Text:
    their experimental studies. I express my gratitude to all the members of Niemeyer Research Group who

  • The Evolution: Electric Vehicles and the End of Oil Addiction

    Creator:
    Donahue, Cory
    Abstract:
    The world is currently using an unsustainable system of meeting its transportation needs with oil. This system is taking a toll on the world environment and on global politics. The physical availability of oil is the system’s most immediate problem and will most likely bring about a transition away from...
    Resource Type:
    Honors College Thesis
    Full Text:
    : Electric Vehicles and the End of Oil Addiction By Cory Donahue A PROJECT