Theoretical and experimental investigations of pumps for pressure systems of aerospace vehicles

Аuthors

Khaustov A. I.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: khaustov.alex@mail.r

Abstract

Dynamic characteristics are investigated for pump units, which are parts of pressure systems of aerospace vehicles. An influence of the pump is discussed on pressure and flow pulsations as well as on time shift of the pulsations. Besides relationship are studied between these pulsations and pressure characteristic shape, plus geometric and operational pump parameters in regard to cavitation-free mode of operation. Experimental data are presented for impeller machines with various pressure characteristic shapes. It is demonstrated that the steeper a pressure characteristic shape the stronger a cutting of intake pulsations.