Best Conference Paper Award!
14.04.2020
A research paper resulting from an AERO-UA pilot project on engine health management systems has been recently awarded best conference paper of the 9th EASN International Conference, which took place in Athens in September 2019.
The paper “Determination of serviceability limits of a turboshaft engine by the criterion of blade natural frequency and stall margin” - prepared by Yaroslav Dvirnyk, Dmytro Pavlenko and Radoslaw Przysowa - was selected on the unanimous decision of the Board of Directors of the European Aeronautics Science Network.
A research paper resulting from an AERO-UA pilot project on engine health management systems has been recently awarded best conference paper of the 9th EASN International Conference, which took place in Athens in September 2019.
The paper “Determination of serviceability limits of a turboshaft engine by the criterion of blade natural frequency and stall margin” - prepared by Yaroslav Dvirnyk, Dmytro Pavlenko and Radoslaw Przysowa - was selected on the unanimous decision of the Board of Directors of the European Aeronautics Science Network.
TV3-117VM/VMA turboshaft
The paper analyses the health and performance of the 12-stage axial compressor of the TV3-117VM/VMA turboshaft whilst operated in a desert environment. The results of the dimensional control of 4800 worn blades were analysed to model the wear process. Operational experience and two-phase flow simulations were used to assess the effectiveness of an inlet particle separator. Numerical model analysis was performed to generate a Campbell diagram of the worn blades and to identify resonant blade vibrations which can lead to high cycle fatigue: mode 7 engine order 30 in the first stage and mode 8 engine order 60 in the fourth. It was also shown that gradual loss of the stall margin over time determines the serviceability limits of compressor blades. Notably, chord wear of sixth-stage blades as high as 6.19 mm would result in a reduction of the stall margin by 15–17% and a permanent stall at 770–790 flight hours. In addition, recommendations are set out for go/no-go criteria for maintenance and repair organizations.
The AERO-UA consortium partners congratulate the authors for this outstanding paper!
The AERO-UA consortium partners congratulate the authors for this outstanding paper!
