Авіаційно-космічна техніка та технологія (Aug 2019)
EXPERIMENTAL CONFIRMATION OF THE RETROSPECTIVE METHOD OF THE ESTABLISHING OF THE GTE SERVICE LIFE
Abstract
There was done experimental confirmation of competent using the retrospective method of GTE service life establish. The data of the twenty-two years of the exploitation of the GTE with the high stage of the two contours and comparison of the obtained results with the exploitation of the foreign engines in the same class shows the good agreement. It testifies reliable retrospective method establishing the service life which was developed in the SE “Ivchenko-Progress” and expediency of using this method in the future. At present there is the goal before the engineers of the aviation companies: “…the goal is to make in a year the same work for the creation of aero-engines which was done earlier in five years and expense 1 billion dollars for the work where we expensed in the past 6 or 7 billion dollars”. To achieve such goals we must change the methodology of the creation of the GTE. For the reducing the time and expenses in creation, working out and certification it is necessary to create new methods for providing strength reliability to achieve a high level of the reliable of the results with the combination of acceptable expenses of time and money. The improvement of the methods of providing strength reliability on the base of strength analysis and experimental research works which were done earlier, experience of working out and service of the constructive – similarity parts of the engine – prototypes make it possible to minimize the time and expenditures at the developing, working out and certification of the new aviation GTE. The using of the constructive – similarity conception with the combination of the experience of the creation, working out and certification aviation GTE at the availability of the contemporary powerful calculation technique and software for the determine thermo-mechanical stress-straining condition of the parts makes it possible to successfully solving the task of providing strength reliability parts in the condition of the complex poly factory loading. In this case, it may achieve an essential saving of the expenditures and time, including also the period of the establishing of the service life. The success service of the engines with the high stage of two contours at the limits of the establishing cycle life of the main parts with the using the retrospective method confirms its authenticity and advantages with others methods of service life establish.
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