Now showing items 94-113 of 209

  • Flight environment of the propellers on commuter aircraft 

    Dorfling, Johann (Wichita State University, 2008-12)
    Data obtained from digital flight data recorders installed on a fleet of 27 Beech 1900Ds are used to assess the actual operational environment of propellers on commuter aircraft. The data consists of 910 complete flights ...
  • Flight loads monitoring of USFS aerial supervision modules 

    Kliment, Linda K.; Rokhsaz, Kamran; Menon, Alok; Nelson, John; Terning, Brett; Weinstein, Edward M. (American Institute for Aeronautics and Astronautics, Inc., 2014-01-17)
    The USFS has collected flight data on Beechcraft King Airs which are being used as Aerial Supervision Modules. Data from seven aircraft is presented. The missions are separated into four flight phases: climb, cruise, ...
  • Flight loads spectra of two business jets 

    Rokhsaz, Kamran; Kliment, Linda K.; Weinstein, Edward M. (American Institute for Aeronautics and Astronautics, Inc., 2014-01-17)
    Operational flight loads have been analyzed from two business jets, a Global 5000 and a Global Express XRS. It is shown that due to the differing nature of their missions, both airframes were subjected to nearly the same ...
  • Fracture mechanics of sandwich structures 

    Denning, Shawn Patrick (Wichita State University, 2013-05)
    Over the past few decades both the demand for knowledge as well an increase in the application of composite materials has boomed. This has led to an intensive focus by the research community to gather information and ...
  • Frequency and time domain analysis of an aeroelastic wing multiple component structure 

    Chakravarthy, Animesh; Evans, Katie A.; Kuhn, Lisa M.; Walters, Jonathan B. (Taylor & Francis Group, 2015-09-02)
    A multiple component structure consisting of two Euler-Bernoulli beams connected to a rigid mass is used to model the heave dynamics of a wing micro air vehicle. In the time domain, the attainment of a C-0-semigroup in the ...
  • Generalization of the collision cone approach for motion safety in 3-D environments 

    Chakravarthy, Animesh; Ghose, Debasish (Springer, 2012-02)
    Avoidance of collision between moving objects in a 3-D environment is fundamental to the problem of planning safe trajectories in dynamic environments. This problem appears in several diverse fields including robotics, air ...
  • A greedy random adaptive search procedure for multi-rendezvous mission planning 

    Dutta, Atri (Univelt, Inc., 2015-01)
    The paper proposes a new algorithm to optimize a sequence of rendezvous maneuvers by a spacecraft with multiple targets. The algorithm consists of two phases: the first phase generates feasible solutions of the problem ...
  • Guidance for precision three-dimensional maneuvers through orifices using safe-passage cones 

    Chakravarthy, Animesh; Ghose, Debasish (American Institute of Aeronautics and Astronautics, 2016-06)
    This paper proposes a safe-passage cone-based guidance strategy developed in a relative velocity framework to enable a generic aerial robot execute a precision three-dimensional maneuver through a narrow orifice in a wall. ...
  • High-order incompressible Navier-stokes equations solver for blood flow 

    Khurshid, Hassan (Wichita State University, 2012-07)
    A high-order finite difference solver was written to solve the incompressible Navier-Stokes (NS) equations and was applied to analyze the blood flow. First, a computer code was written to solve incompressible Navier- Stokes ...
  • Hybrid parallelization and optimization of a higher-order Navier-Stokes equation solver 

    Selvam, Mukundhan (Wichita State University, 2015-12)
    With the contemporary emerging transition for the past two decades in high-performance computing (HPC) towards clusters of nodes, it is possible to obtain an efficiently scalable computational fluid dynamics (CFD) code by ...
  • A hybrid scheme for the numerical simulation of shock/discontinuity problems 

    Mahmoudnejad, Niloufar; Hoffmann, Klaus A. (Taylor & Francis, 2011)
    To address accuracy issues for direct numerical simulation, a hybrid scheme based on the weighted compact scheme (WCS) and weighted essentially non-oscillatory (WENO) scheme is developed. The new hybrid method incorporates ...
  • Ice particle trajectory simulation 

    Suares, Ian Greg (Wichita State University, 2005-12)
    Large ice particles shed from an airframe can cause damage to downstream aerodynamic surfaces and aft mounted engines. A simulation tool was developed to compute the trajectories of shed ice particles and determine the ...
  • In-plane shear response of laminated composites at high strain rates 

    Dandayudhapani, Satish K.; Keshavanarayana, Suresh R. (Wichita State University. Graduate School., 2006-04-28)
  • Integration of airfoil stall and compressibility models into a propeller blade element model 

    Dorfling, Johann; Rokhsaz, Kamran (American Society of Civil Engineers, 2016-07)
    The blade element method is an indispensible engineering design tool. It executes rapidly on a personal computer and is capable of accurate propeller performance predictions. An extensive literature survey reveals that for ...
  • Kinetics of prepreg epoxy resin curing for aircraft body repair 

    Dahanayake, Jayangika Niroshani (Wichita State University. Graduate School, 2014-04-25)
    Curing is the cross-linking of polymer chains, which results in toughening of polymer material and it is widely used in bonded composite repair for aerospace components. The main objective of this project is to analyze ...
  • Load rate effects on Interlaminar fracture toughness of composite materials 

    Nandakumar, Pratap Nuggehalli; Keshavanarayana, Suresh R. (Wichita State University. Graduate School, 2009-05-01)
    The energy dissipation due to the failure of composites is of particular interest for crash applications involving dynamic loading. Separation of layers or delamination which can occur in opening (mode-I) is one of the key ...
  • Load rate effects on the crush response of laminated corrugated beams 

    Tan, Kian Yip; Fazal Elyas, Sana (Wichita State University. Graduate School, 2010-04-23)
    This experimental study addresses the progressive crushing responses of laminated corrugated beams fabricated using Newport NB321/7781 E-glass prepreg material. Stacking sequences of [0]n and [45]n where n=4,8 and 12 have ...
  • Local bending containment in impact damaged sandwich panels 

    Ghimire, Mohan (Wichita State University. Graduate School., 2007-04-27)
    A repair technique involving the containment of local bending of sandwich facesheet by strategically filling honeycomb core cells has been explored to improve the damage tolerance of impact damaged sandwich panels. The ...
  • Local bending containment in sandwich panels with subsurface core damage 

    Ghimire, Mohan (Wichita State University, 2008-05)
    The compressive residual strength and behavior of impact damaged sandwich panels are governed by the amount of non-visible core damage underneath the facesheets. The failure modes under in-plane compressive loading are ...
  • Low thrust orbit-raising using non-singular orbital elements and proximity quotient approach 

    Vijayan, Sainath; Dutta, Atri (Univelt, Inc., 2015)
    Recent years have shown a growing interest in the space industry in all-electric satellites. Mission designers analyzing the optimal deployment options for all electric satellites need to consider three important metrics: ...