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Rolls-Royce is pioneering the UltraFan engine family architecture containing a planetary gearbox in a power range of 15 to 80 megawatts. To increase the efficiency of the UltraFan, a planetary gearbox is introduced between fan and intermediate pressure compressor. This enables running the turbine to rotate faster and allows a reduced fan speed.
Find out about the benefits of a high performance Servo Worm Gearbox, and get an understanding of what applications & industries are ideal for this gearbox. By watching this webinar you will be able to identify applications well-suited for a high performance servo worm reducer and understand the construction differences among each model of DieQua's servo worm gear reducer.
In this paper, the models for different power loss sources in transmissions from literature are applied and compared, which form the two methods - ISO 14179-2 and the joint model to estimate the power losses in a transmission. A 2-speed transmission in an electric vehicle is used as a case study to compare the two methods and validate them with experimental data.