FIELD: measuring.
SUBSTANCE: invention relates to measurement equipment and is intended for measurement of coefficient of transformation of current flowing along elements of outer surface of spacecraft into voltage of electromagnetic pickup in fragments of on-board cable network laid along these elements. Tested fragment of the on-board cable network, which is loaded on both sides by resistances simulating the real working load, is placed on the facility simulating the element of the outer surface of the spacecraft. Device simulating element of outer surface of spacecraft, with tested fragment of onboard cable network is placed in vacuum chamber on rotary table. Apparatus simulating the element of the outer surface of the spacecraft with the tested fragment of the on-board cable network is irradiated with an electron flow simulator with accelerating voltage from 5 to 50 kV with pitch N. Rotary table can turn relative to simulator of electron flow from 0 to 270 degrees with pitch N. Parameters of the current pulse with amplitude value I, which are formed as a result of irradiation of the facility simulating an element of the outer surface of the spacecraft, correspond to real parameters of electrostatic discharges on the surface of the spacecraft. Electromagnetic pickup voltage U is measured in the tested fragment of the on-board cable network and determining the value of the transformation ratio of the current Kmp flowing through the means simulating the outer surface element of the spacecraft with length L, into electromagnetic interference voltage in the tested fragment of the on-board cable network from the ratio of the measured electromagnetic interference voltage U to the product of the amplitude value of the pulse current and the length of the device simulating an element of the outer surface of the spacecraft.
EFFECT: high reliability and accuracy of determining electromagnetic interference in fragments of an on-board cable network laid on the outer surface of spacecraft.
2 cl, 2 dwg
