ISO/NP 21937

Space systems — Polarity check requirements for launch vehicles

Scope

This standard specifies the requirements of contents, methods, timing and result recording for polarity check of launch vehicles.

This standard can be used to guide the polarity-related check and test for launch vehicles throughout the whole phases before launch, including the inspection of parameters polarity during the design phase, and the check of installation polarity, plug-in polarity, etc., during the assembly and testing phase in the integration and launch site.

The main framework of this standard is as follows:

1) General requirements: the top requirements for the items of polarity check, timing and methods.
2) Contents of polarity check: detailed requirements, what should be checked for each kind of polarity.
3) Timing and methods selection: when and how to conduct the polarity check.
4) Results recording: what should be recorded for the polarity check, and related format.