Sökning: "Helicopter"

Visar resultat 11 - 15 av 24 avhandlingar innehållade ordet Helicopter.

1. 11. Active Noise Control in Aircraft : Algorithms and Applications

   Författare :Sven Johansson; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active noise control; feedforward control; filtere-x lms algorithm; complex lms; multichannel system; multiple reference; aircraft; headset;

   Sammanfattning : The thesis consists of five papers which are divided into three main parts. Parts A and B deal with active noise control in a propeller aircraft application, whereas Part C deals with active noise control in a helicopter application. LÄS MER

3. 12. Selected Aspects of Navigation and Path Planning in Unmanned Aircraft Systems

   Författare :Mariusz Wzorek; Andrzej Szałas; Jacek Malec; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Path planning; motion planning; autonomous Unmanned Aircraft Systems UAS ; Hierarchical Concurrent State Machines HCSM ; UAV;

   Sammanfattning : Unmanned aircraft systems (UASs) are an important future technology with early generations already being used in many areas of application encompassing both military and civilian domains. This thesis proposes a number of integration techniques for combining control-based navigation with more abstract path planning functionality for UASs. LÄS MER

4. 13. Prehospital advanced airway management in the Nordic countries

   Författare :Mikael Gellerfors; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Tracheal intubation (TI) is often the preferred technique to secure the airway of an unconscious patient in the prehospital setting. Prehospital TI is associated with several challenges, including limited assistance, few airway rescue devices and environmental difficulties. LÄS MER

5. 14. A geophysical investigation of carbonate build-ups in the Baltic Basin using reflection seismic and well data

   Författare :Tegan Levendal; Christopher Juhlin; Lars Nielsen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reflection seismic; Ordovician; Silurian; Carbonate mud mounds; Reefs; Gotland; Sweden; CAES; Seismic interpretation; OPAB dataset; 3D seismic; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

   Sammanfattning : During the Late Ordovician, the region around Gotland was part of a shallow epicratonic basin in the southern subtropics. Low latitudes, relatively warm sea temperatures and the presence of a shallow marine environment promoted algae to flourish and diverse carbonate build-ups such as carbonate mounds and reefs developed on the southern margin of Baltica. LÄS MER

7. 15. Deductive Planning and Composite Actions in Temporal Action Logic

   Författare :Martin Magnusson; Patrick Doherty; John-Jules Meyer; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Temporal Action Logic; deductive planning; composite actions; interval algebra; constraint logic programming; execution monitoring; Computer science; Datalogi;

   Sammanfattning : Temporal Action Logic is a well established logical formalism for reasoning about action and change that has long been used as a formal specification language. Its first-order characterization and explicit time representation makes it a suitable target for automated theorem proving and the application of temporal constraint solvers. LÄS MER