Development and analysis of screw restrictor hydraulic characteristics in the air bleed valve control unit of a gas turbine engine

Abstract

There is a need to change the air bypass control unit performance to estimate its influence on the compressor gas-dynamic steadiness and the combustion process in the combustion chamber during the testing and operation of gas turbine engines with low-emission combustion chamber. Setting up the required air bypass valve closed (open) time by means of standard hydraulic actuator in the process of testing requires stopping the engine, removing the air bypass control unit, changing the orifice and testing the unit’s performance on the test stand that are associated with significant time and material costs. To adjust the time of restating the air bypass control unit it is proposed a screw throttle, the parameters of which are calculated on the basis of research performance of the unit. The custom screw throttle is designed and its hydraulic characteristics are researched, its effectiveness is experimentally verified within the unit at the test stand conditions. The possibility of changing the air bypass control unit performance in a wide range at different air bypass valve reaction forces is shown.

About the authors

A. G. Gimadiev

Samara State Aerospace University

Author for correspondence.
Email: gimadiev_ag@mail.ru

Doctor of Science (Engineering)

Professor of the Department of Automatic Systems of Power Plants

Russian Federation

G. M. Makaryants

Samara State Aerospace University

Email: georgy.makaryants@gmail.com

Doctor of Science (Engineering)

Associate Professor of the Department of Automatic Systems of Power Plants

Russian Federation

K. V. Blyumin

Samara State Aerospace University

Email: blyumin.kirill@gmail.com

Postgraduate student

Russian Federation

I. M. Dudnichenko

Samara State Aerospace University

Email: rockivan@mail.ru

Engineer

Russian Federation

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