Video: Aerodynamic tests for new nightjet generation of ÖBB

The first journey of the new generation of ÖBB Nightjets is coming soon: from 10 December, the new Generation Viaggio Next Level night coaches will be in service in Austria and Germany. Rail passengers look forward to a wide range of comfort categories and technical innovations.

PJM was commissioned with the overall approval in cooperation with ÖBB. As an accredited test laboratory according to ISO/IEC 17025, the Austrian system specialist was in charge of the design and production of the measuring wheelsets as well as for the approval tests in the areas of running behavior, fatigue strength, acoustics and aerodynamics.

The aerodynamic vehicle tests were performed at speeds of over 200 km/h. In the course of these measurements, compliance with the permissible aerodynamic stresses was checked on the train platform, on the open track and in tunnels. The required boundary conditions in Austria can currently only be realised on the Westbahn line, which is why the test runs took place between Vienna and Linz.

Eco-friendly travelling comfort "Made in Austria"

Austria's railway expertise is reflected in the modern night trains. With the new Nightjets, ÖBB is expanding its role as market leader in the European night train business: Siemens Mobility was responsible for the development, the carriages were manufactured in Vienna and the bogies and wheelsets come from Graz. PJM carried out the approval tests and the measuring wheelsets were designed and manufactured in the headquarters of Graz.

Video of high speed test runs

PJM media release

Media release of ÖBB (in German language)

 

 

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Static strength measurements in the factory enabled by a mobile pressure frame

The key data of Plasser & Theurer's 09-3X track tamping machine are impressive: 80 tonnes net weight, 35 m length, 8 axles, and 3-sleeper tamping units ensure powerful and efficient working. To determine the stresses and deformations of the vehicle frame, PJM carried out pressure frame tests according to EN 12663-1. The strength tests were performed at the Linz factory of the technology leader and manufacturer of track maintenance machines. This has clear advantages for the machine manufacturer: the entire on-site infrastructure is used and any adaptations to the object can be coordinated with the design engineers and immediately implemented. Using PJM’s mobile pressure frame allows the tests to be carried out directly in the factory.

Thanks to its modular design, the pressure frame is suitable for every type of vehicle. It has proven its effectiveness in static tests in numerous projects.

"Testing with the mobile pressure frame at the customer's site provides full transparency for the calculation engineers with regard to test procedure. It also greatly facilitates validating the calculation models. This approach ensures the least possible amount of time is spent in projects," explains Martin Joch, CEO of PJM. "PJM handled the measurements very efficiently and professionally. We greatly benefitted from the fact that they were carried out on our premises in Linz," confirms Andreas Pumberger, Head of Railway Testing Lab, Plasser & Theurer.

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