INSTALLATION FOR DETERMINING THRUST CHARACTERISTICS OF LIQUID REACTIVE FUELS Russian patent published in 2021 - IPC G01N33/22 

FIELD: testing materials.

SUBSTANCE: invention relates to the field of testing materials, in particular liquid reactive fuels, using measuring tools by automated determination of thrust characteristics, such as specific thrust R and specific thrust impulse I_ti of liquid reactive fuels (LRF), to study the applicability of liquid reactive fuels with the required characteristics in given conditions, and can be used in automated systems for creating and researching new fuel compositions. The installation for determining the traction characteristics of liquid reactive fuels contains a heated working chamber, made with the possibility of oscillation, in the form of a cylindrical body open at one end, which can be closed with the possibility of replacing with a membrane or a plug; fuel supply channel to the working chamber; means for igniting/undermining the fuel-air mixture in the working chamber; pressure sensors installed at a fixed distance from the open end of the installation. The body is closed on one side with a spherical shape, and on the opposite side - a spherical shape with a round threaded hole. The body of the moving part of the installation is rigidly fixed on four metal wheels. Additionally, the installation includes horizontally located metal rails with anti-rollback stoppers, from the side of the open end of the working chamber of the installation; a pin fixed from the outside in the center of the closed end of the working chamber body of the installation; a block for fixing the pressure with a pin, fixed on a surface perpendicular to the plane of horizontal movement of the body of the working chamber of the installation. The installation also contains a cylindrical metal pipe inside, at the same distance from the walls, rigidly fixed horizontally to the axis of the working chamber of the installation on three longitudinal plates of a smaller diameter than the working chamber of the installation; a cylindrical mixer with a device for injecting liquid jet fuel, gaseous oxidizer; a system for supplying a fuel-air mixture with solenoid valves through nozzles from the mixer to the working chamber of the installation; process control unit; a sensor for fixing the temperature inside the housing of the working chamber of the installation.

EFFECT: improving accuracy of measuring the thrust characteristics of liquid jet fuels with the possibility of assessing the dependence of the thrust characteristics of liquid jet fuels on the configuration of the nozzle and compositions of fuel compositions based on LRF, determination of the activation energy required to implement the combustion or detonation process of LRF under various operating conditions, by creating working chamber of approximate conditions of operation and testing of LRF.

1 cl, 3 dwg