Now showing items 20-39 of 207

  • Automatic airspace avoidance using advanced flight control system 

    Gunbatar, Yakup (2006-12)
    An algorithm is developed and validated for automatic avoidance of restricted airspaces. This method is devised specifically for implementation with an advanced flight control system designed for general aviation application. ...
  • Buckling, postbuckling and progressive failure analysis of hybrid composite shear webs using a continuum damage mechanics model 

    Herrero, Javier (Wichita State University, 2007-12)
    This dissertation presents an innovative analysis methodology to enhance the design of composite structures by extending their work range into the postbuckling regime. This objective is accomplished by using the numerical ...
  • Characterization of adhesives at room and elevated temperatures 

    Nedukanjirathingal, Santhosh Kumar (2006-07)
    Recent interest in advanced materials has paved the way for exploring joining options besides the traditional mechanical or thermal methods such as riveting or welding. Because of the availability of highly advanced ...
  • Characterization of rate effects on Mode-I Double-Cantilevered Beam tests through finite element modeling 

    Pepper, Christopher Todd (Wichita State University, 2011-05)
    Tests of Mode-I delamination in Double Cantilever Beam (DCB) specimens were modeled with the finite element solver, LS-DYNA, to simulate the behavior of composite materials at high speed loading rates (between 2 in/s and ...
  • Collision cones for quadric surfaces 

    Chakravarthy, Animesh; Ghose, Debasish (IEEE, 2011-12)
    The problem of collision prediction in dynamic environments appears in several diverse fields, which include robotics, air vehicles, underwater vehicles, and computer animation. In this paper, collision prediction of objects ...
  • Comprehensive two fluid model simulation of critical two-phase flow through short tube orifices 

    Javidmand, Puya; Hoffmann, Klaus A. (American Society of Mechanical Engineers, 2015)
    Small-diameter tubes are utilized widely as expansion devices in refrigeration systems. They are employed in either kinds of short-tube orifices or long capillary tubes. Performance of these tubes is reliant upon critical ...
  • Computational methodology for bleed air ice protection system parametric analysis 

    Hoffmann-Domingos, Rodrigo (Wichita State University, 2010-08)
    Aircraft in-flight icing is a major safety issue for civil aviation, having already caused hundreds of accidents and incidents related to aerodynamic degradation due to post takeoff ice accretion. Airplane makers have ...
  • Conceptual investigation of a hybrid electric regional airliner 

    Chandramouli, Aparna (Wichita State University, 2016-04-29)
    This project re-imagines and investigates an 80-100 passenger aircraft as a hybrid electric airplane powered by distributed electric propulsion (DEP). The BAE 146 was used as a baseline for this study, featuring a blown ...
  • A conceptual study of airfoil performance enhancements 

    Ghoddoussi, Armin (Wichita State University. Graduate School., 2012-04-18)
    A conceptual study of performance enhancing devices for an airfoil is performed using Computational Fluid Dynamics. Three simple, passive devices are examined to explore alternate methods for stall control and lift-to-drag ...
  • A conceptual study of airfoil performance enhancements using CFD 

    Ghoddoussi, Armin (Wichita State University, 2011-07)
    A conceptual study of performance enhancing devices for an airfoil is performed using Computational Fluid Dynamics. Three simple, passive devices are examined to explore alternate methods for stall control and lift-to-drag ...
  • Constrained and unconstrained propeller blade optimization 

    Dorfling, Johann; Rokhsaz, Kamran (American Institute for Aeronautics and Astronautics, Inc., 2014-01-17)
    Propeller optimization by means of calculus of variations is addressed in this paper. A procedure for deriving the Euler-Lagrange equations for both unconstrained and constrained propeller blade twist optimization is ...
  • Constrained and unconstrained propeller blade optimization 

    Dorfling, Johann; Rokhsaz, Kamran (American Institute of Aeronautics and Astronautics, 2015-07)
    Propeller optimization by means of calculus of variations is addressed in this paper. A procedure for deriving the Euler-Lagrange equations for both unconstrained and constrained propeller blade-twist optimization is ...
  • Control system design for morphing aircraft 

    Nobleheart, Wilfred (Wichita State University, 2015-12)
    The focus of this study is flight control design of morphing aircraft. In recent years, advances in smart technologies and lightweight materials have fueled interest in morphing airvehicles. Typically, lightweight materials ...
  • Crack arrest capabilities in adhesively bonded skin and stiffener 

    Habeeb, Shamsuzuha; Keshavanarayana, Suresh R. (Wichita State University. Graduate School, 2009-05-01)
    The crack arrest capabilities and the load bearing characteristic of a stiffened and unstiffened panel subjected to uniform remote displacement field is examined in this paper. A four stringer stiffened wide panel is ...
  • Crack arrest capabilities of an adhesively bonded skin and stiffener 

    Habeeb, Shamsuzuha (Wichita State University, 2012-12)
    The crack arrest capabilities and the load bearing characteristic of a stiffened and unstiffened panel subjected to remote tension loading is examined in this work. We make use of cohesive interface elements to predict the ...
  • Crack propagation analysis using acoustic emission sensors for structural health monitoring systems 

    Kral, Zachary Tyler; Horn, Walter J.; Steck, James E. (Hindawi Publishing Corporation, 2013)
    Aerospace systems are expected to remain in service well beyond their designed life. Consequently, maintenance is an important issue. A novel method of implementing artificial neural networks and acoustic emission sensors ...
  • Crushing behavior of corrugated laminated beams at different stroke rates 

    Tan, Kian Yip (Wichita State University, 2013-12)
    Crashworthiness has become an important aspect in vehicle design due to the stringent requirements on occupant safety under survivable accident scenarios. The uses of composite materials have increased due to their ...
  • Cure-induced residual stresses in a notched laminate 

    Febrinaldy, Budi (Wichita State University, 2014-07)
    The cure-induced residual stresses in the vicinity of the free edge of an open hole in IM7/977-2 carbon/epoxy laminates have been investigated. Holes in laminated structures are intended for fastener joints, access ports ...
  • Damage detection in metal structures using acoustic emission 

    Zachary Kral; Horn, Walter J.; Steck, James E. (Wichita State University. Graduate School, 2009-05-01)
    The structural components of many machines remain in service far beyond their designed lifetimes. This is especially true in the field of aerospace structures, where aircraft, wind turbines, satellites, and other components ...
  • Damage tests on an adaptive flight control system 

    Steck, James E.; Sayeed, F. (Wichita State University. Graduate School., 2006-04-28)