Abstract
One of the main reasons for the space vehicles (SV) power supply systems failure is a secondary arc. In the statistics of fatal failures that can lead to the SV loss, the failure rate of the power supply systems is 9%, but despite this, there are no standard methods for diagnosing the on-board equipment for the arc stability, due to the relative novelty of the problem. The problem we encountered is associated with the need to switch power supply systems to the voltage levels that are much higher than the arc voltage in the space vacuum. From the point of view of the defects downing that can lead to arcing, the most vulnerable are the insulation coatings. Therefore, a significant part of the problem solution is concentrated in the development of the specific methods for these coatings diagnostics. In space technology, such diagnostics significance is increased due to the inability to provide necessary repairs or services in the outer space.
Highlights
The transition to the new operating voltage standard in satellite electronics has led to the problem of arcing between the printed circuit board elements
This research main aim is to improve the quality of the satellites on-board electronic equipment
We have proposed the possibility of finding latent defects in the printed circuit boards (PCB) coatings, based on the corona discharge properties, using a reverse corona, that can be registered visually or via ampermeter
Summary
The transition to the new operating voltage standard in satellite electronics has led to the problem of arcing between the printed circuit board elements. In order to keep the mass of the satellite as small as possible, the space inside the circuit housing is not filled with an insulator or is not sealed. It contributes to the emergence of electric discharges, which could potentially extend to the satellite on-board equipment. The ignition of the electric arc in the onboard satellite system always leads to failure. In most cases, it leads to the satellite termination. The final result of the research is a proven and patented installation and method for determining the printed circuit boards thin-filmed coatings defects for the satellites on-board electronic equipment. The obtained results will be used to develop documentation and prototypes testing
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