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.
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Showing 1 to 9 of 9 for “"airloads"”.
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A lifting surface solution for vortex induced airloads and its application to rotary wing airloads calculations.
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Thesis. 1970. Sc.D.
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Finite-State Airloads for Deformable Airfoils on Fixed and Rotating Wings
This thesis presents a state-space theory for the lift, drag, and all generalized forces of a deformable airfoil. Trailing-edge flap deflections are included implicitly as a special case of the general deformations. The theory allows for a thin airfoil performing small arbitrary motions with …
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An Airloads Theory for Morphing Airfoils in Dynamic Stall with Experimental Correlation
… simulation. A unified model for predicting the airloads on a morphing airfoil in dynamic stall is presented, consisting of three components. First, a linear airloads theory allows for arbitrary airfoil deformations consistent with a morphing airfoil. Second, to capture the effects of the wake, …
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Predicting the high-frequency airloads and acoustics associated with blade-vortex interaction
… quality of the prediction of the high-frequency airloads associated with blade-vortex interactions and thus on the accuracy with which the acoustic signature of the aircraft can be predicted. Aerodynamic, wake structure and acoustic predictions using the Vorticity Transport Model are compared …
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Computation of helicopter rotor wake geometry and its influence on rotor harmonic airloads
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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A Combined Piezoelectric Composite Actuator and Its Application to Wing/Blade Tips
… to incompressible flow and 2D quasi steady airloads, its twist angle is related not only to aerodynamic moment and applied voltage but also to coupling terms, such as the trapeze effect and the tennis racquet effect. Results show the benefit of hinge position aft of the aerodynamic center, …
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Foundations for Finite-State Modelling of a Two-Dimensional Airfoil that Reverses Direction
… the effect of the wake vorticity on the airfoil airloads, paving the way for future investigations when the airfoil changes directions and enters its own wake.</p>
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Propulsion By Sinusoidal Locomotion: A Motion Inspired By Caenorhabditis Elegans
… and the application of the state-space airloads theory to the theoretical forces of sinusoidal motion. An original MATLAB program has been developed to analyze the video records of C. elegans' movement in different fluids, including Newtonian and non-Newtonian fluids. The experimental …
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Analysis and reconstruction of dynamic-stall data from nominally two-dimensional aerofoil tests in two different wind tunnels
… semi empirical method for assessing unsteady airloads such as lift, drag and pitching moment. This applies both to helicopters and wind turbines. The simplicity and undergoing philosophy of this method is its strength, especially compared with the current solution of Navier-Stokes or Euler …