| ENSURING OPERATIONAL CHARACTERISTICS OF TURBINES OF TPU AT ITS WORK IN COMPOSITION OF LRE
Influence on characteristics of turbines of TPU complex of efforts implemented in accordance with NPO Energomash’ methodology in process of ensuring required margins of operability and reliability of turbines of TPU and engine in the whole is researched. Results of model tests on air of six low-speed reactive turbines of TPU of powerfull liquid rocket engine of NPO Energomash’ design are summarized. Qualitative relations of influence of increase of radial and axial gaps, thickening of edges of nozzle and working blades on efficiency and axial force of turbines are determined. Received results can be used to design turbines of advanced new engines and to increase efficiency and reliability of production engines.
Keywords: turbine, LRE, axial force, structural gaps, efficiency.
Literature
UDC 669.14.018.8:621.822
Voronezhsky Evgeny Valerievich.
Kozhemyakin Leonid Ivanovich.
Novikov Viktor Ivanovich, cand. of tech. sciences.
Russia, Moscow region, Khimki, NPO Energomash named after academician V.P. Glushko. Tel. (495) 286-92-54.
ABOUT PROBLEMS WITH USE OF HIGH-STRENGTH ALLOYS IN OXIDIZER PUMP IMPELLER OF LRE
A comparative analysis of two alternative technologies of manufacturing oxidizer pump impeller: by powder (granular) metallurgy and by method of investment casting is presented. Possibility and conditions of use in oxidizer pump more economical cast impeller instead of powder impeller of ЭП741НП granulated alloy are validated.
Keywords: LRE, oxidizer pump, powder metallurgy, investment casting, high-strength alloys, structural strength, hydrogen embrittlement.
Literature
UDC 621.45:519.6
Kaloshin Valentin Alexandrovich, cand. of tech. sciences
Machikhin Alexander Sergeevich, cand. of phys-math. sciences.
Perfilov Alexey Mikhailovich.
Russia, Moscow region, Khimki, NPO Energomash named after academician V.P. Glushko. Tel. (495) 286-92-54.
Barinov Andrey Valerievich.
Sergeev Dmitriy Sergeevich.
Kinzhagulov Igor Yurievich, cand. of tech. sciences.
Stepanova Ksenia Andreevna.
Russia, St. Petersburg, ITMO University.
Smirnov Alexander Alexandrovich.
Russia, Moscow region, Dubna, JSC "IFTP".
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