Research Tests of the Advanced Bypass Turbojet Engine Core With Simulation of Target Input Thermgasodynamic Parameters in the Conditions of the Engine Building Enterprise

Abstract

The method of advanced bypass turbojet engine core research tests with simulation of target inlet thermogasdynamic parameters at the engine OEM site is considered. It is stated that research testing is traditionally associated with the use of multifunctional test facilities capable of simulat-ing operating conditions as close as possible to operational ones for a wide range of test objects of different thrust (power) and application. Such test facilities require significant investment and operating costs, which in general determines their limited number in the world. It is shown that the steady growth of the share of research tests at the initial design stages requires organization of tests with minimal financial and material costs directly at the engine OEM site, where testing the advanced bypass turbojet engine core plays a special part. Determination of the method for simulating thermogasdynamic parameters is associated with solution of rather contradictory problems, where, on the one hand, it is required to ensure reliable reproduction of the actual operating conditions of the core for all configurations of the bypass turbojet engine under development, and on the other hand, to ensure lower manpower and cost of testing. One of the effective solutions is the use of specialized test facilities, a distinctive feature of which is determination of the simplest and most economical means of obtaining the working fluid with the required thermogasdynamic parameters for a pre-determined range of test objects of different thrust (power) and application. The technical implementation of the dedicated test facility for testing the advanced bypass turbojet engine core at UEC-Aviadvigatel JSC (Perm) is considered.

The Fuzzy Logic in the Problems of Test Control of a Bypass Turbojet Engine Gas Generator

“…Continuous improvement in the operational characteristics of gas-turbine engines and reducing the time and cost of their creation require the use of the latest techniques aimed at improving the strength and thermal state properties of the engine rotor and stator elements, increasing the compressor stall margin, and improving the emission, among others. One of the most important stages for the development of new technologies in an engine-building enterprise is research testing of a gas generator with simulation of the core inlet conditions for a full-size engine [1].…”

“…At present, the major disadvantages of such tests are the prevailing manual operations, which require high qualifications and the well-coordinated work of personnel, having a multi-iteration nature, and as a consequence, leading to significant time taken to evaluate the required thermo gas dynamic parameters at the inlet of the test gas generator [1,2]. Therefore, one the most effective solutions is to increase the level of test automation.…”