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 20 of 462 for “"leading edge"”.
-
Leading Edge
… flight came from. It was this passion and knowledge that led me to my current body of work. This body of work explores the different types of inspiration that the bird had on the development of the airplane. Though birds and humans can both achieve flight, they do so very differently. “Leading …
-
Real Airfoil Effects on Leading Edge Noise
… determine the effects of angle of attack on the leading edge noise. Measurements are compared with numerous theories to determine the mechanism driving the production of leading edge noise. Calculations were also made using a boundary element method to determine the effects of airfoil shape on …
-
Actin polymerization dynamics at the leading edge
… to coordinate elongation and attachment to leading edge. Using total internal reflection fluorescence microscopy of actin filaments, we tested how profilin, Arp2/3, and capping protein (CP) function together to propel beads or thin glass nanofibers coated with N-WASP WCA domains. During …
-
BOUNDARY LAYER ON FLAT PLATE WITH LEADING EDGE PATTERNS
… AS WELL AS THE HOT-WIRE ANEMOMETRY. DIFFERENT LEADING EDGE PATTERNS SUCH AS TRIANGULAR, SINUSOIDAL AND NOTCHED PATTERNS WITH IDENTICAL WAVELENGTH AND AMPLITUDE WERE USED TO PRODUCE UNIFORM SIZE VORTICES. IN ADDITION, THE EFFECT OF THE AMPLITUDE AND WAVELENGTH ON THE VORTEX STRUCTURE WAS STUDIED …
-
Numerical Simulation of Leading Edge Vortex Rollup and Bursting
… such as vortex core size, vortex burst location, leading edge separation, and vortex rollup often do not agree quantitatively with results of physical experiments. The present work defines models for these physical viscosity effects which can be coupled with an Euler solver to improve modeling of …
-
Aerodynamics of maneuvering slender wings with leading-edge separation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
-
Modification of Blade-Vortex Interactions Using Leading Edge Blowing
… thesis investigates the effectiveness of steady leading-edge blowing (LEB) flow control for modifying the vortex induced vibrations on an airfoil in the wake of a circular cylinder. The airfoil was allowed to oscillate perpendicular to the fluid flow direction in response to the impinging …
-
Boundary element simulation of oscillating foil with leading-edge separation
… we develop a numerical model to account for the leading-edge separation for the boundary element simulation of the oscillating foil with potential flow assumption. Similar to the trailing-edge separation, the leading-edge separation is modeled by a thin shear layer. Because the leading edge is …
-
Evolution and structure of leading edge vortices over slender wings
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
-
The Leading Edge: Outcomes Achieved by Residence Hall Association Leaders
Researchers suggest that there are many outcomes associated with involvement in student clubs and organizations. Research also indicates that positive outcomes are associated with serving in leadership positions. Residence Hall Association (RHA) leaders are college students who are involved in a …
-
Leading edge vortex detection using bio-inspired on-body pressure sensing
… Our research focuses on the detection of leading edge vortices (LEV) shed from a hydrofoil undergoing both steady translation and flapping foil motions. A NACA 0018 foil was instrumented with four pressure sensors to allow the pressure field near the foil surface to be sampled throughout …
-
Leading-edge analysis for correct simulation of interface separation and hydraulic fracturing
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
-
Benchmarking semiconductor lithography equipment development & sourcing practices among leading-edge U.S. manufacturers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
-
The retirement planning process of African-American female, leading-edge baby boomers
… less than two decades, African-American, female, leading-edge baby boomers (AAFLEBBs) will join the retirement population. AAFLEBBs are members of the largest generation in the history of the United States. This generation's economic well being has been threatened by high unemployment rates, …
-
Aerodynamic Flow Control through Adapted Leading Edge Enabled by Pneumatic Artificial Muscle Actuators
… wing–body junction through the use of a morphing leading-edge fairing actuated by pneumatic artificial muscles (PAMs). The compliant fairing, cast from Ecoflex® 00–31 silicone and embedded with a McKibben-type PAM actuator, was designed to dynamically reshape the junction surface and influence …
-
The infuence of hail on wind turbine blade leading edge erosion and damage
Wind turbine blade damage, particularly leading edge erosion, is a signifcant problem faced by the renewable energy industry. Wind turbines are subject to a wide range of environmental factors during a 20+ year lifespan, with hailstones often touted as a key contributor to the deterioration of …
-
Aerodynamics of a swept wing with leading-edge ice at low Reynolds number
… to understanding the aerodynamic effects of a leading-edge ice simulation on a highly swept, high-aspect ratio wing. The swept wing model was a modified version of the NASA Common Research Model, designed to represent a typical wide body commercial airliner. The modified geometry of the model …
-
Customer-driven engineering for developing a "hit" product targeted at Leading Edge Boomers
Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, February 2001.
-
Syngas ash deposition for a three row film cooled leading edge turbine vane
… investigate the dynamics of ash deposition in a leading edge vane geometry with film cooling. Large Eddy Simulations (LES) is used to model the flow field of the coolant jet-mainstream interaction and the deposition of syngas ash in the leading edge region of a turbine vane is modeled using a …
-
Aeroacoustic transfer of leading edge serrations from single aerofoils to low-pressure fan applications
Leading edge serrations are well-known for their aeroacoustic potential in reducing aerofoil-turbulence interaction noise and are also associated with certain aerodynamic advantages. To prepare leading edge serrations for industrial application, two obstacles remain to be addressed. First is a …
Page 1 of 24