Designing the Ornicopter, a tailless helicopter with active flapping blades: a case study

The Ornicopter concept is a single-rotor, tailless configuration. By actively flapping its blades, the Ornicopter rotor can propel itself to rotate, and hence does not need a tail rotor. In previous research, the Ornicopter concept has been compared with the Bo-105 conventional helicopter from various aspects, while the Ornicopter has the same...

Ornicopter Multidisciplinary Analyses and Conceptual Design

The tail rotor of conventional helicopters has always been considered a necessary 'evil'. It is necessary to counteract the reaction torque of the engine and to control the helicopter in yaw but it consumes substantial power, has only marginal control authority under unfavourable wind conditions, and it is noisy, vulnerable and dangerous. A...

Design of a Distributed Clock Generator for Multiple Power Domain System-on-Chip Integrated Circuits

Modern system-on-chip IC designs show great requirement on minimizing power consumptions. One of the low power techniques is using dynamic voltage frequency scaling for each power domain. Yet the clock generator unit is the bottleneck to apply this technique. In this thesis, we focus on the local clock generator unit solution and design three...