18 propellers is investigated, using the cusp (scallop) height as the objective function. This technique allow one to end mill a surface, while the tool is not necessarily oriented along the surface normal, stressing the need for better techniques to solve the accessibility problem in 5-axis modes. References 1] J. E. Bobrow. NC machine tool path generation from CSG part representations.

The growing number of civil applications in which Unmanned Aerial Vehicles (UAVs) are involved can create many concerns for airspace security and surveillance. Gathering as much information possible about a drone be crucial to apply proper countermeasures if potentially dangerous situation is detected. Of course, the presence UAV detected by radar, but it extend system capabilities obtain addit...

Wing rock phenomenon is an undesired motion appears in high angles of attack where a rolling in the aircraft in positive and negative roll angles with specified amplitude and frequency is occurred. In this paper two adaptive controllers suggested to control the rolling dynamics under wing rock phenomenon for a delta wing aircraft with presence of disturbance. Disturbance was considered as unmat...

As awareness of shipping’s impact on the environment grows, increasing attention is being paid to “operational lubricant discharges”. Such leakage of lubricating oil, in the course of normal operations, may occur both from underwater equipment (sterntubes, controllable pitch propellers, thrusters and pods, steering gear, stabilisers) and from above the waterline equipment (such as cranes, davit...

The dynamically positioned wind turbine concept consists of a floating platform equipped with and propellers. In contrast to conventional offshore turbine, it has no moorings. Instead, the propellers are used keep stationary. It may also be an on-board energy storage system (e.g. batteries, hydrogen, etc.) avoid grid-connection. This is well suited for deployment in far-offshore, where grid-con...

Abstract. This paper describes the data collected by University of Nebraska-Lincoln (UNL) as part field deployments during Lower Atmospheric Process Studies at Elevation – a Remotely-piloted Aircraft Team Experiment (LAPSE-RATE) flight campaign in July 2018. The UNL deployed two multirotor unmanned aerial systems (UASs) multiple sites San Luis Valley (Colorado, USA) for collection to support th...