Safran Aircraft Engines

Snecma

Petar Tomov

Philippe Vertenoeuil

Loïc Pora

Sébastien Christophe Loval

Abdallah Aounali

Théodore Magne

Fuel pump for an aircraft engine, comprising an inducer and a centrifugal impeller fixed together and having an axis of rotation, an annular space spacing axially the inducer and the impeller, and two contact portions between the inducer and the impeller disposed radially outside the annular space, a first plenum chamber and a second plenum chamber, in which the inducer and the impeller are spaced axially from each other, each being disposed between the two contact portions, the plenum chambers being symmetrical to each other with respect to the axis of rotation and in fluid communication with the annular space, the centrifugal impeller comprising a plurality of axial balancing holes distributed about the axis of rotation and opening out into the annular space at one end, and into a downstream space of the impeller at the other end.

Aircraft engine fuel pump

Device () for testing a hydraulic part () for a turbomachine, the device comprising a closed loop for circulation of a working fluid, the loop comprising at least one recirculation pump () configured to circulate the working fluid in the loop according to a direction of circulation, at least one valve () for regulating the flow rate of a working fluid, at least one reservoir (A) configured to store the working fluid, a test section () configured to accommodate the hydraulic part (), the device () further comprising a gas injection means () configured to inject and dissolve, at atmospheric pressure, a gas in the working fluid stored in the reservoir (A).

Device and method for improved testing of a hydraulic part for a turbomachine

A method of regulating a feed circuit including at least a first pump and an upstream duct leading to the first pump, the method including the steps of: determining the gas content of a flow in the upstream duct feeding the first pump; and, when the value of the gas content in the upstream duct, as determined in the determining step, is greater than or equal to a predetermined threshold value, modifying the flow rate of the flow feeding the first pump.

Method for regulating a supply circuit

A device for regulating the fuel supply flow rate for a turbine engine, comprising at least a pump, an upstream line leading to the pump, a downstream line downstream of the pump, a recirculation duct branched off the downstream line, allowing to collect the fluid in the downstream line and channel it towards the upstream line, a means for regulating the flow rate disposed on the recirculation duct, a phase measurer disposed in the upstream line, a computing unit connected to the phase measurer and to the flow rate regulating means, said computing unit controlling the flow rate regulating means such as to control the degree of opening of said flow rate regulating means, according to the gas content value in the upstream line.

Device for regulating supply flow rate

The invention provides a test bench for characterizing a flow of a two-phase fluid, the test bench comprising a fluid tank, a first pump suitable for taking fluid from the tank and for feeding first and second lines connected in parallel, each line being provided in succession, from upstream to downstream in the flow direction of the fluid, with: injection means for injecting air into the fluid; measurement means suitable for providing information about the proportion of the vapor phase relative to the liquid phase of the fluid; and a second pump or a Venturi.

Growing community of inventors

Moissy-Cramayel, France

Petar Tomov