METHOD FOR REDUCTION OF INTENSITY OF EFFECT OF SPREADING OF MATERIAL IN VACUUM CHAMBER IN TESTS OF ELECTRIC JET ENGINES AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01M15/14 

FIELD: physics.

SUBSTANCE: claimed invention relates to the field of engineering related to tests of electric jet engines with high specific impulse, for example, stationary plasma and ion engines. Method of reducing intensity of the effect of spraying material in a vacuum chamber when performing fire tests of electric jet engines consists in protecting surfaces of a vacuum chamber with cooled and uncooled structural elements made using protective materials. Prior to performing the tests, a mathematical model of the fire test process is used, wherein by changing the model parameters, the scheme of the most optimal arrangement of test objects and protective structural elements is determined to minimize the weight of sputtered material per unit time per unit area at given points of the vacuum chamber. Sensors are installed in vacuum chamber to ensure continuous control of amount of material deposited in area of their installation in vacuum chamber per unit of area per unit of time due to change of their optical and (or) electrical characteristics. Based on the control results, the arrangement and thermal modes of the protective structural elements in the vacuum chamber are changed. Another invention of the group relates to a complex for reducing intensity of the effect of spraying material in a vacuum chamber when performing fire tests of electric jet engines, including cooled and uncooled protective structural elements placed in a vacuum chamber, as well as sensors communicated via sealed passage connector and signal converter with computer. Protective structural elements installed in vacuum chamber are made with possibility of changing their arrangement and their thermal modes. Due to change of their optical and (or) electrical characteristics, the sensors change the value of the output signal in proportion to the amount of material deposited in the area of their installation sprayed in the vacuum chamber per unit area per unit time.

EFFECT: group of inventions reduces the amount of material deposited on the surface of the test equipment.

2 cl, 2 dwg