DIN EN 16603-35-06 PDF Download

For spacecraft propulsion components, the DIN EN 16603-35-06 standard, also known as ECSS-E-ST-35-06, focuses on cleanliness standards. Within the topic of space engineering, the mechanical standard is a component. It focuses especially on the cleanliness of propulsion systems, subsystems, and components.

The standard specifies design standards that minimize contaminant formation and accumulation while permitting cleaning of propulsion systems, subsystems, and components. Additionally, it specifies standards for cleanliness, including the allowed ranges for particles, contaminants, and moisture. The standard specifies the cleaning procedures that must be followed in order to maintain the required level of cleanliness, as well as the procedures for confirming compliance.

The standard also specifies the cleanliness strategy, which includes the particular cleaning needs and compatibility criteria to prevent exceeding acceptable values. Additionally, it outlines the parameters that should apply to cleaning or cleanliness verification, such as compatibility checks following environmental tests.

The standard is applicable to regularly employed propulsion systems and the storable propellant mixtures they are associated with, such as Hydrazine, monomethyl hydrazine, MON (Mixed Oxides of Nitrogen), Nitrogen, Helium, Propane, Butane, and Xenon. In order to achieve the required cleanliness standards in the propulsion systems for satellites, manned spacecraft, and their accompanying ground support equipment, it serves as the cornerstone for the European spacecraft and spacecraft propulsion industry.

It is significant to note that the standard does not address criteria for external cleanliness related to tanks, pipework, fungi, or outgassing. The ECSS-Q-ST-70-01 standard addresses each of these issues independently. In accordance with ECSS-S-ST-00, the standard can also be modified to fit the unique requirements and limitations of certain space missions.