Influence of Variable Geometry Compressor on Transient Performance of Counter-Rotating Open Rotor Engines
Journal article, 2018

This work describes a methodology used for counter-rotating (CR) propellers performance estimation. The method is implemented in an in-house program for gas turbine performance prediction, making possible the simulation of the counter-rotating open rotor (CROR) architecture. The methodology is used together with a variable geometry compressor control strategy to avoid surge conditions. Two cases are simulated under transient operation for both fixed and variable geometry compressor. The influence of the variable geometry control on the transient performance of CROR engines is evaluated and a comprehensive understanding on the transient behavior of this type of engine could be obtained. It is shown that the use of the variable geometry compressor control does not significantly affect the overall engine performance, while avoiding the surge conditions, thus ensuring the engine operation safety.


transient performance

variable geometry

counter-rotating open rotor


Vinícius Tavares Silva

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Cleverson Bringhenti

Instituto Tecnológico de Aeronáutica (ITA)

Jesuino Takachi Tomita

Instituto Tecnológico de Aeronáutica (ITA)

Olivier Petit

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Journal of Engineering for Gas Turbines and Power

0742-4795 (ISSN) 1528-8919 (eISSN)

Vol. 140 12 121002

Subject Categories

Aerospace Engineering

Applied Mechanics

Fluid Mechanics and Acoustics



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