Nonlinear Control For a Small-Scale Helicopter UAV in Autorotation

With the increased use of small unmanned systems, and even automated flight, safety is becoming an issue. For helicopters specifically, engine failure typically results in a crash. For manned helicopters, autorotation is a manoeuvre used to reduce the downward speed and land at safe velocities. In this thesis, we examine a technique of modelling...

Analysis of Pedestrian Crowd Movements at Lowlands

Several pedestrian crowd events that became disasters occurred in the last decade. Most of these events were either religious festivals, sport or music events. Even though these events are organized frequently, not a lot is known about pedestrian crowd movements. One of the key problems in the analysis is the lack of crowd movement data....