Using modal analysis in multidisciplinary investigation of Liquid Propellant Rocket Engines

Аuthors

Tkach V. V.

NPO Energomash named after academician V.P. Glushko, 1, Burdenko str., Khimki, 141400, Russia

e-mail: tka400@mail.ru

Abstract

Article represents the methods for multidisciplinary investigation of Liquid Propellant Rocket Engine’s main element – main turbine disk. Descriptions of mathematical models being used during investigation, LMS modal analysis processing sequence for mathematical model correction are given here. It is also showed what these methods allow to increase an evaluation accuracy of alternating stresses and high cycle fatigue margin.

Keywords:

modal analysis; Liquid Propellant Rocket Engine; High Cycle Fatigue; Durability; Goodman modified diagram

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