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Dynamic performance analysis of high speed flexible coupling of gas turbine engine transmission system

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Abstract

The high speed flexible coupling (HSFC) is used on the fighter aircraft gas turbine engines utilizing non-lubricated, metallic flexible plates. The HSFC has to transmit power at high speeds typically ranging from 10,000 to 18,000 rpm from engine gear box to accessory gear box. The HSFC also accommodates large axial and lateral misalignments due to thermal expansion and flight dynamics. The imposed angular and axial displacement distorts or bends the flexible plates. To achieve an infinite life design for HSFC, it is necessary to keep away from the different natural frequencies from the operating range of speeds apart from the optimal structural strength to accommodate larger misalignment. This paper discusses about details of system analysis, design and evaluation of HSFC for gas turbine engines. The dynamic characteristics of the HSFC are investigated through the finite element analysis (FEA) and experimental verification. The present approach can be extended for the development of similar type of flexible couplings.

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Authors and Affiliations

  1. Combat Vehicles Research and Development Establishment, Avadi, 600 054, India

    S. Nagesh & A. M. Junaid Basha

  2. Department of Mechanical Engineering, Defence Institute of Advanced Technology, Pune, 411 025, India

    Thakur Dinesh Singh

Authors
  1. S. Nagesh
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  2. A. M. Junaid Basha
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  3. Thakur Dinesh Singh
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Corresponding author

Correspondence to Thakur Dinesh Singh.

Additional information

Recommended by Editor Yeon June Kang

Nagesh, S. received his post graduate degree in Mechanical Engineering Design from PSG College of Technology, Coimbatore, India. He is working as scientist in Combat Vehicles Research and Development Establishment, Chennai, India for the development of high speed flexible coupling for aircraft applications. His fields of interest are Rotor dynamics and Active Vibration Control system.

Junaid Basha, A. M, received his Ph.D. from IIT Madras, working as scientist in Combat Vehicles Research and Development Establishment, chennai India. He is leading a research group for the devlopment of Hydraulic filters for aircraft aplication and Portable Ultra fine filter system for Hemodialysis of human. His present research interests focus on high speed rotor system.

Thakur Dinesh Singh, received his Ph.D. from IIT Madras working as Associate Professor in Defence Institute of Advanced Technology, Pune, India. His area of research includes Rotor dynamics, High speed machining of aerospace materials, Precision Engineering.

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Nagesh, S., Junaid Basha, A.M. & Singh, T.D. Dynamic performance analysis of high speed flexible coupling of gas turbine engine transmission system. J Mech Sci Technol 29, 173–179 (2015). https://doi.org/10.1007/s12206-014-1224-x

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  • DOI: https://doi.org/10.1007/s12206-014-1224-x

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