Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Aerodynamic load."”.
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Actuator-Work Concepts Applied to Morphing and Conventional Aerodynamic Control Devices
… parameter for the comparison of various aerodynamic control device configurations. This estimated "actuator work," or practical work as it will be referred to as in this thesis, is based on the aerodynamic and structural resistance to a control surface deflection. It is meant to represent …
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A Low-Cost Method of Airspeed Data Acquisition via Image Processing and Experimental Aerodymanic Load Calculation Using Panel Methods
… primary structures that exhibit a time-dependent load memory. A project was undertaken to develop a service-life prediction method to better understand composite use in this market segment. Most general-aviation aircraft do not possess flight data acquisition systems to gather in-service …
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A vortex-lattice method for Delta wing aerodynamics
… edge separation. Numerical predictions for the aerodynamic loads and pressure distributions are compared with experimental data. A 75° Delta wing and a 60° Delta wing with Leading Edge Vortex flaps in uniform, symmetric and steady flow are studied. Uniform and cosine distributions are used to …
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A numerical model of unsteady, subsonic aeroelastic behavior
… has been developed. The technique accounts for aerodynamic nonlinearities associated with angles of attack, vortex-dominated flow, static deformations, and unsteady behavior. The angle of attack is limited only by the occurrence of stall or vortex bursting near the wing. The fluid and the wing …
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Structural analysis and multidisciplinary design of flexible fluid loaded composite canard
… of a composite canard subject to static aerodynamic loads was numerically studied in the present research. The canard was modeled as a symmetrically laminated curved panel, consisting of 8 plies of T300/5208 graphite/epoxy composite laminate. Modeling of this structure-fluid interaction …
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Identification of Transient Nonlinear Aeroelastic Phenomena
… aeroelastic phenomena include unsteady nonlinear aerodynamic loads, structural nonlinearities, as well as nonlinear couplings between the flow and the structural response. Nonlinearities in aerodynamic loads originate from unsteady shocks and/or flow separation. Structural nonlinearities are …
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Helicopter Flight Dynamics Simulation with a Time-Accurate Free-Vortex Wake Model
… dynamics were also studied and related to the aerodynamic load distributions obtained with the free wake induced velocities. The model was also validated in a lateral maneuver from hover. The results show improvements in the on-axis prediction, and indicate a possible relation between the …
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Unsteady Aerodynamic and Aeroelastic Analysis of Flapping Flight
The unsteady aerodynamic and aeroelastic analysis of flapping flight under various kinematics and flow parameters is presented in this dissertation. The main motivation for this study arises from the challenges facing the development of micro air vehicles. Micro air vehicles by requirement are …
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Agile load transportation systems using aerial robots
… we address problems that can occur during load transport using aerial robots, i.e., small scale quadrotors. First, detailed models of such transportation system are derived. These models include nonlinear models of a quadrotor, a model of a quadrotor carrying a fixed load and a model of a …