The method of the disk friction determining of low mass flow centrifugal pumps

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Low mass flow centrifugal pumps are currently widely used in the energy supply system of liquid rocket engines, the engines of correction, docks, consisting of on-Board power sources on-Board sources power supply system of fuel components in the in gas generator systems for inflating fuel tanks, and in temperature control systems of aircraft and spacecraft.

When designing low mass flow centrifugal pumps for aerospace purposes, methods for calculating and optimizing the flow rate are often used corresponding to the design methods of full-size centrifugal pumps, which limits the mode and design potential of pumps and affects their energy characteristics and reliability. Reliability requirements often lead to the need to reserve units and fuel-supply systems.

Despite the large amount of research works, the issues of reliable design of low mass flow centrifugal pumps with high energy and operational parameters for spacecraft and aircraft remains an urgent task.

The article analyses the operational parameters of low mass flow centrifugal pumps used in aircraft and spacecraft power systems. Taking into account working fluid used and the temperature range, it was found that a laminar rotational flow with Reynolds number characteristic  is realized in the lateral cavity between the impeller and the pump housing.

The determination of power losses on disk friction of the impeller technique is developed taking into account design features and the applied schemes. Equations for determining the disk friction coefficients are consistent with the dependencies obtained by other authors. The obtained equations for the laminar rotational flow made it possible to determine the dependences for the resistance moment and the disk friction power of the impeller determining of a low mass flow centrifugal pump.

Sobre autores

Alexander Zuev

Reshetnev Siberian State University of Science and Technologies

Autor responsável pela correspondência
Email: dla2011@inbox.ru

Cand. Sc., associate Professor, Department of Aircraft Engines

Rússia, 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037

Vladimir Nazarov

Cand. Sc., Professor, Department of Aircraft Engines, Reshetnev Siberian State University of Science and Technologies

Email: nazarov@mail.sibsau.ru

Cand. Sc., Professor, Department of Aircraft Engines

Rússia, 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037

Anna Arngold

Krasnoyarsk Machine-Building Plant

Email: arngoldanna@mail.ru

Department of Special Connectors and Instruments

Rússia, 29, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660123

Ivan Petrov

Krasnoyarsk Machine-Building Plant

Email: petroof777@mail.ru

Deputy chief designer for engines, propulsion systems and power plants

Rússia, 29, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660123

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Declaração de direitos autorais © Zuev A.A., Nazarov V.P., Arngold A.A., Petrov I.M., 2019

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Este artigo é disponível sob a Licença Creative Commons Atribuição 4.0 Internacional.

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