The design and adjustment of modern gas turbine engines significantly rely on the use numerical research methods. This paper reports a method devised for calculating thermogasdynamic parameters characteristics turboshaft engine. special feature given is two-dimensional blade-by-blade description compressor in engine system. Underlying calculation nonlinear mathematical model that makes it possi...

The cantilever dual-rotor system is a typical structure of the blade output end open rotor engine and coaxial turboshaft engine. excessive unbalanced vibration coupled one main factors limiting application above type. In order to accurately describe coupling effect between dual-rotor-intermediate bearings, response analyzed, self-sensitivity coefficient proposed guide selection measuring points...

Gas turbine engines (GTE) are widely used in military and industrial applications. Accurate modeling is mandatory to advance GTE control. The present article investigates, experimentally theoretically, a detailed dynamic model of an electro-hydraulic system that controls variable geometry inlet guide vanes (VIGV) turboshaft GTE. A parametric study for the computationally expensive time-consumin...

In order to enhance the anti-interference ability of speed external load and achieve rapid response control for turboshaft engine next-generation helicopters, an incremental nonlinear dynamic inverse (INDI) method based on Jacobi matrix is proposed. First, law state variable model (SVM) obtained according mathematical derivation INDI. Then, adopting sequential quadratic programming (SQP) algori...

This paper presents an analytical method to determine various main parameters or performances of engine components when those cannot be directly measured and it is necessary them. Additionally, some variants instrumentation methods are presented, for example: inlet, compressor, turbine jet nozzle instrumentation. The purpose the measure possible parameters, which then used as inputs in a model ...