scope:

This document defines requirements to the list of parameters, measured during firing bench and flight tests. The requirements of the document apply to all the types of expendable liquid rocket engines:

a) operating on all types of propellant (including cryogenic);

b) with afterburning (with gradual burning) and without afterburning (without gradual burning);

c) low-thrust engines: one component (monopropellant) and two-component (bipropellant).

Note expandable engines may have multiple firings.

The document sets requirements to the list of parameters to be measured when performing firing bench and flight tests of expandable liquid rocket engines, supplied to the user.

The document doesn't specify firing bench test preparation and testing procedure, methods of test results processing and analysis, requirements to measurement accuracy.

The parameters listed in the document characterize performance of liquid rocket engines and they are used to evaluate technical condition of engines (operable, inoperable), their compliance with the specified requirements and whether engines are available to be delivered to a user and put into operation. ISO 15865 is used to assess compliance of liquid rocket engines to the specified requirements.

The document specifies mandatory and optional parameters.

The engine designer may identify an additional list of measured parameters for specific items, taking into account their design features.

A term "optional parameter" means (in cases, when a corresponding assembly or a unit is a part of the engine) that, according to the approved decision of a liquid engine designer, its measurement is not mandatory, as opposed to a parameter, which must be measured and recorded.