Sgl Carbon Ag

Tea Gmbh Technologiezentrum Emissionsfreie Antriebe

Anecom Aero Test Gmbh

Axel Riepe

Michael Hötger

Jens Kleemann

Walter Thiele

Stefan Sand

Edmund Ahlers

Carsten Heydorn

Carsten Daum

André Steinborn

Ian Hobson

The fundamental idea of the invention consists of the construction of the test device from a stationary inner basic structure (to) that juts out from the wall of the test bench and houses the drive shaft () for the fan to be tested, from mobile, interchangeable external housing modules (to) which can be aligned in relation to one another by means of connected optical elements (), from interchangeable fittings (to) for conducting air and noise reduction, in addition to interchangeable measuring devices (to) that are connected to a modular telemetry unit for determining performance data and aerodynamic and acoustic conditions required by the fan and the fittings. A test device that is designed on this basis permits a plurality of data that is influenced by the design of the fan and the fittings, which lie in the flow duct behind the fan, to be recorded using relatively simple structural resources and conclusions can be drawn from said data with regard to the reduction of noise, an optimal aerodynamic design and improved performance.

Test device for the fan of an aircraft engine

A pair of sliding elements for machine parts exposed to high-pressure and high-temperature steam, preferably piston-cylinder arrangements for steam engines. The first sliding element is produced from a synthetic, fired but not graphitized carbon material which comprises graphitized carbon black and/or natural graphite as significant filler and whose pores are filled with metal, metal alloy, a ceramic, synthetic resin and/or pitch which has been carbonized, preferably in the form of a piston and/or piston ring. The second sliding element, preferably in the form of a cylinder liner or guide bush, comprising an iron-containing, high-temperature-resistant material which is preferably alloyed with chromium and/or nickel and is provided at least on the surface layer with a nitride layer.

Sliding pairing for machine parts that are subjected to the action of highly pressurized and high-temperature steam, preferably for piston-cylinder assemblies of steam engines

Growing community of inventors

Berlin, Germany

Axel Riepe