An aeroelastic analysis based on finite elements in space and time is used to model the helicopter rotor in forward flight. The rotor blade is represented as an elastic cantilever beam undergoing flap and lag bending, elastic torsion and axial deformations. The objective of the improved design is to reduce vibratory loads at the rotor hub that are the main source of helicopter vibration. Constr...

The University of Texas Center for Electromechanics (UT-CEM) is developing flywheel energy storage systems for combat and commercial vehicles and also leads the major U.S. Flywheel Safety and Containment Program, a consortium effort of several leading flywheel developers. Safety for high performance composite flywheel systems on combat vehicles presents special challenges that impact the design...

Composite pulses [1, 2, 3] play an important role in many NMR experiments, as they allow the effects of experimental imperfections, such as pulse length errors and off-resonance effects, to be reduced. In conventional NMR experiments these pulses are used to implement particular transformations on the Bloch sphere, such as inversion, and their quality can be easily assessed by determining the e...

In this thesis focus is on the electromagnetic design of a synchronous machine suited for a belt driven alternator and starter (BAS) in a micro hybridisation of a mid size passenger car. The BAS needs to provide a high cranking torque to start the combustion engine, especially in a cool condition where the requirements is highest. Beside the high cranking torque is it desirable to have a high p...

In order to harness the kinetic energy of marine currents, we propose a novel ocean-current turbine with a horizontal axis. The turbine can be moored to the seabed and function similarly to kites in a water flow. To operate such turbines in a marine current, the resulting rotor torque needs to be canceled. Therefore, the proposed turbine is designed with a float at its top and a counterweight a...