Prof. Dr.-Ing. Berthold Schlecht
Prof. Dr.-Ing. Berthold Schlecht studied mechanical engineering at the Gerhart-Mercator-University of Duisburg, Germany, where in 1993 he obtained his doctoral degree on the optimization of vertical conveyors. He was then employed by Krupp Fördertechnik GmbH, Lübeck, Germany, ultimately serving as head of design for Open Pit Mining Technology. From September 1999 to April 2002 he was managing director of Maschinen-und Stahlbau Dresden, a company of the Herrenknecht AG, and managing director of Schlosser-Pfeiffer GmbH, a Bilfinger + Berger AG company. Since January 2001 Schlecht holds the Chair of Machine Elements at the Technische Universität Dresden, with specialization in drive technology, fatigue strength calculation and multibody system simulation. (Bio last updated 2017-08-01 Contact Randy Stott, Managing Editor, with changes.)
Articles by Berthold Schlecht
- Determination of Maximum Loads for Drivetrain Components in Thrusters Using Flexible Multibody-System Models (August 2017)
The usage of modern thrusters allows combining the functions of the drive and the ship rudder in one unit, which are separated in conventional ship propulsion systems. The horizontally oriented propeller is supported in a vertically rotatable nacelle that is mounted underneath the ship's hull. The propeller can directly or indirectly be driven by an electric motor or combustion engine. Direct drive requires the installation of a low-speed electric motor in the nacelle. This present paper concentrates on indirect drives where the driving torque is transferred by bevel gear stages and shafts from the motor to the propeller.