Kraftübertragung und Fahrbahnverschleiß durch Spikereifen

Spikereifen ermöglichen eine verbesserte Kraftübertragung auf vereisten Fahrbahnen, verursachen jedoch Verschleiß der Fahrbahndeckschicht im direkten Kontakt mit der Fahrbahnoberfläche. Die vorliegende Forschungsarbeit beschreibt die Interaktion zwischen Spikereifen und Fahrbahn, identifiziert Wirkmechanismen sowie den Einfluss verschiedener Parameter auf Kraftübertragung und Fahrbahnverschleiß und stellt Labormessverfahren vor, mit denen Spikereifen experimentell untersucht werden können

Kraftübertragung und Fahrbahnverschleiß durch Spikereifen

While studded tires improve force transmission on icy roads, they cause damage of the road surface when running on bare roads. This report describes the interaction between studded tire and road and identifies mechanisms involved in the force transmission and road wear caused by studded tires. Test methods for experimental investigations are presented as well as the influence of different parameters on force transmission and road wear

ON THE USE OF RPAS IN NATIONAL MAPPING – THE EUROSDR POINT OF VIEW

Following the latest developments in Remotely Piloted Airborne Systems (RPAS) industry and attending some of the most prominent fairs related to the field of geomatics one easily recognizes that it is RPAS, which is strongly pushed into the civilian market. It really is of interest, if official authorities like National Mapping Agencies (NMAs) are starting to implement the RPASs technology within their specific data acquisition processes – to establish alternatives to their traditional manned photogrammetric survey flights. The European Spatial Data Research organization (EuroSDR), representing European NMAs and research organizations of currently 17 European states, is following UAV developments since end of 2004, where an ongoing activity was created, to continuously update their members on the developments in this technology. As systems consolidated, new impetus was given to more deeply explore the potential RPAS for national mapping. Today first national mapping agencies have already used RPAS based data for first experiments in mapping. Several NMAs are discussing on the future role of this technology within their agencies. This report will try to give an overview on the current situation on the use of RPAS in European mapping agencies. Based on the input from some selected NMAs, their expectations on RPAS technology, the fields of use they foresee in their countryspecific surroundings and – exemplarily – first experiences with this type of technology will be presented. Even though the use of RPAS in NMAs is still new, substantial technical and operational benefits become obvious already. With that, the paper will try to give a state-of-the-art report on the current activities and overall acceptance of RPAS technology in European photogrammetric mapping