Proposals for improving the efficiency and service life of the turbines of turbo-pump assemblies in liquid-propellant rocket engines by using double-sided crest-type radial labyrinth seals

Abstract


Nowadays the improvement of the design of liquid-propellant rocket engines (LPREs) depends on a variety of factors and activities, among which we can distinguish, for example, the improvement of energy characteristics of units and assemblies forming part of the LPREs. The article compares the operation of LPRE turbo-pump turbines using double-sided and single-sided labyrinth seals used in Energomash's engines. The key geometrical parameters of each seal variant, images of 3D-models of seals constructed for the calculations, the resulting computational grid for each seal variant, as well as graphs of the pressure distribution and velocity fields are presented for visual comparison. Sectoral leakage was calculated for each variant of the seal, the possibility of reducing the temperature of the turbine inlet working gas was assessed. In the future attention should be paid to a more detailed study of this type of seals with the use of modern computing power


About the authors

P. S. Levochkin

NPO Energomash named after academician V. Glushko

Author for correspondence.
Email: energo@npoem.ru

Russian Federation

Candidate of Science (Engineering)
Deputy General Director – Chief Designer

V. K. Chvanov

NPO Energomash named after academician V. Glushko

Email: energo@npoem.ru

Russian Federation

Doctor of Science (Engineering), Professor
Adviser to the General Director

V. S. Vasiliev

NPO Energomash named after academician V. Glushko

Email: vasilev_vs@npoem.ru

Russian Federation

Design Engineer of the Turbines Sector

S. F. Timushev

Moscow Aviation Institute (National Research University)

Email: irico@mai.ru

Russian Federation

Doctor of Science (Engineering), Professor

References

  1. Kirillov I.I. Teoriya turbomashin [Theory of turbo-machines]. L.: Mashinostroenie Publ., 1972. 533 p.
  2. Levochkin P.S., Chvanov V.K., Romasenko E.N., Sidorenko A.S., Kanalin Yu.I. Problemy razrabotki agregatov TNA i busternykh nasosov sovremennykh ZhRD [Problems in the development of turbine pump assemblies and booster pumps for modern liquid-propellant rocket engines]. Moscow: NPO Energomash Publ., 2017.
  3. Belyaev E.N., Chvanov V.K., Chervakov V.V. Matematicheskoe modelirovanie rabochego protsessa ZhRD [Mathematical modeling of the working process of a liquid-propellant rocket engine]. Moscow: Moscow Aviation Institute Publ., 1999. 228 p.
  4. Kanalin Yu.I., Chernysheva I.A. Operational characteristics of turbo-pump assembly turbines in accordance with requirements for operating as part of a liquid-propellant rocket engine. Proceedings of NPO Energomash. 2015. No. 32. P. 237-262. (In Russ.)
  5. Skibin S.A., Sternin L.E., Chernysheva I.A., Kanalin Yu.I., Poletaev N.P., Kazennov I.S. Optimization of turbine labyrinth seal design on the basis of a model of three-dimensional flow. NTO no. 769-92-2013.
  6. Kesaev Kh.V., Trofimov R.S. Nadezhnost' dvigateley letatel'nykh apparatov [Reliability of aircraft engines]. Moscow: Mashinostroenie Publ., 1982. 136 p.
  7. Ovsyannikov B.V., Borovskiy B.I. Teoriya i raschet agregatov pitaniya zhidkostnykh raketnykh dvigateley [Theory and calculation of power units for liquid rocket engines]. Moscow: Mashinostroenie Publ., 1986. 376 p.
  8. Timushev S.F., Klimenko D.V., Firsov V.P., Antyukhov I.V. Numerical modeling of pressure pulsations in the turbo expender of perspective cryostatting system. Trudy MAI. 2015. No. 82. (In Russ.). Available at: http://www.trudymai.ru/upload/iblock/4e3/timushev_klimenko_firsov_antyukhov_rus.pdf?lang=en&issue=82

Statistics

Views

Abstract - 91

PDF (Russian) - 48

Article Metrics

Metrics Loading ...

PlumX

Dimensions

Refbacks

  • There are currently no refbacks.

Copyright (c) 2018 VESTNIK of Samara University. Aerospace and Mechanical Engineering

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies