Kirill Guseinov, a postgraduate student at the Department of Technical Mechanics of the South Ural State University (SUSU), has developed the first refined method in Russia for calculating the strength of a composite dovetail joint. It is used to attach fan blades in aircraft engines.
The new algorithm takes into account the nonlinear behavior of the composite under shear and the complex type of stress state. Calculations indicate an increase in the accuracy of strength assessment, which makes it possible to optimize the mass of parts without losing reliability.
облегчение конструкции двигателя на десятки процентов за счет применения композитных элементов позволит увеличить его грузоподъемность до 35 тонн. Кроме того, закономерно уменьшаются затраты топлива и размеры двигателей. Каждый 1% экономии массы самолета дает дополнительные 5% прибыли.
The development is planned to be used in the design of advanced PD-35 high-thrust engines for Russian wide-body aircraft.
Also, the United Engine Corporation has begun to use rotary welding in the production of PD-8 and PD-14 aircraft engines. Thanks to the technology, it is possible to reduce welding time by 10 times.
Earlier www1.ru reported that ODK has accelerated the welding of parts for PD-8 and PD-14 engines by 10 times.
