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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 20 of 62 for “"camber"”.
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Unbonded Monostrands for Camber Adjustment
Prestressed concrete structural members camber upwards or downwards depending upon the location of application of prestress force. Identical members do not camber equally due to variability of the factors influencing it. Differential camber in the beams, if significant, results in excessively tall …
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Using Maturity to Predict Girder Camber
… this research was to determine if differential camber of prestressed concrete girders could be reduced by accurate prediction of initial camber at release of prestress. Maturity at prestress transfer was used to calculate modulus of elasticity for predicting camber at release. The research …
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A Study of the Design of Adaptive Camber Winglets
… to determine the effect of changing the camber of a winglet on the efficiency of a wing in two distinct flight conditions. Camber was altered via a simple plain flap deflection in the winglet, which produced a constant camber change over the winglet span. Hinge points were located at 20%, …
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Development of a camber measurement system for skis and snowboards
… contact points, tip and tail height, and maximum camber height, each of these values having a strong effect on the performance of the ski or snowboard. Parts from two existing non-functioning machines, one acquired in K2 Sports' acquisition of Line Skis, and the other constructed by previous …
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The development of a reversible and finitely variable camber windsurf fin
… potential of the device. The benefits of using camber in the design of lifting sections for high lift and low drag are well known. Traditional variable camber lifting surfaces utilise leading and trailing edge flap technologies to vary the geometry (camber) of the cross-section. However, this …
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Development of a Variable Camber Compliant Aircraft Tail using Structural Optimization
… and the design and integration of a variable camber compliant tail. The morphing airplane was designed and manufactured to study the benefits of large planform changes and flight control morphing. Morphing capabilities of each wing consist of 8 in. wing extension and contraction, 40° of wing …
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Development of a design methodology for transport aircraft variable camber flaps suitable for cruise and low-speed operations
… of a generic design methodology for variable camber flap systems for transport aircraft, intended to be used for cruise and low-speed operations. The methodology was structured after several revisions were performed on conventional high-lift device design methodologies for existing transport …
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Investigation of Time-Dependent Deflection in Long Span, High Strength, Prestressed Concrete Bridge Beams
Accurate camber prediction in prestressed concrete bridge beams is important to all parties involved in bridge design and construction. Many current prestress loss prediction methods, necessary for proper camber calculation, were developed many years ago and are predicated on assumptions that may …
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The optimization of a Formula SAE vehicle's suspension kinematics
… roll center's movement and designing the tire camber change characteristics to achieve 0° of outer-wheel camber while at the car's maximum lateral acceleration.
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Prediction of Time-Dependent Stresses and Deflections in Prestressed, Concrete Girders: From Start of Fabrication to End of Service Life
… and contractors need accurate prediction of the camber in precast, prestressed, concrete girders. Large differences in the camber between adjacent girders lead to significant construction difficulties that often have financial and/or legal ramifications. Many factors affect the time-dependent …
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Experimental and Numerical Investigations of Optimized High-Turning Supercritical Compressor Blades
… 0.87 and inlet flow angle of 48.4 deg, with high camber angles of about 55 deg. The baseline blade was a conventional Controlled Diffusion Airfoil (CDA) design and the other two were optimized blades. The blades were tested for an inlet Mach number range from 0.61 to 0.95 and an inlet flow angle …
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Field Calibration of Time-Dependent Behavior in Segmental Bridges Using Self -Learning Simulation
… The study presents a scheme to improve the camber of segmental bridges using a self-learning simulation.
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Aerodynamic Response of a Two-Dimensional Cambered Wing at Low Reynolds Numbers in Steady-State Onset Turbulence
… flows. Furthermore, it is unclear whether camber alters this response. This research examines how a thick aerofoil responds to onset turbulence at low Reynolds numbers and whether camber influences this. A cambered and an otherwise identical symmetrical aerofoil were tested in wind tunnel …
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Structural Performance of High Strength Lightweight Concrete Pretensioned Bridge Girders
… length, development length, prestress loss, camber, and flexural capacity are satisfactory for use with fully-bonded, pretensioned flexural members consisting of HSLWC and to make recommendations for improvements where necessary. Twelve high strength pretensioned beams of variable unit weight …
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Aerodynamic and Electromechanical Design, Modeling and Implementation Of Piezocomposite Airfoils
… are proposed to form two types of variable-camber aerodynamic surfaces. The first concept, a simply-supported thin bimorph airfoil, can take advantage of aerodynamic loads to reduce control input moments and increase control effectiveness. The structural boundary conditions of the design are …
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Design of a morphing airfoil exhibiting bi-stability using topology optimization
… non-linearity of structures to design a novel camber morphing mechanism for a bi-stable airfoil using topology optimization. The goal is to use snap-through instabilities to actuate and maintain the shape of the morphing airfoil. Topology optimization has been used to distribute material over …
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Post-Injection Welded Joint Fatigue Tests of Sandwich Plate System Panels
… were used under the middle support to offset the camber in the SPS panels. It was also found that stresses caused by draw down of the camber had an adverse affect on the post-injection welded joint and greatly reduced its fatigue resistance.
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Structural Design and Analysis of a Kinematic Mechanism for a Morphing Hyper-Elliptic Cambered Span (HECS) Wing
… leading and trailing edge as well as spanwise camber. For this wing, the leading and trailing edges are swept back according to a hyper-elliptical equation. The span of the wing is also defined with hyper-elliptical anhedral giving it nonplanar spanwise camber. A single-degree-of-freedom …
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Improved Design Method for Cambered Stepped Hulls with High Deadrise
… Clement created a design method for swept-back cambered step hulls with deadrise. The cambered step is designed to carry 90% of the planing vessels weight with the remaining 10% being support by a stern mounted hydrofoil. The method requires multiple design iterations in order to achieve an …
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A continuous vorticity panel method for the prediction of steady aerodynamic loads on lifting surfaces
… aspect ratios, angles of attack, planforms, or camber. The numerical results are in good agreement with the experimental data for both rectangular and delta wings for incompressible flows.
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