DIN EN 16603-31-02:2015-12

The present standard takes advantage of valid requirements of ESA PSS-49, but reflects at the same time today’s advanced knowledge of two-phase cooling technology, which can be found with European manufacturers. This includes experience to select proven material combinations, reliable wick and container designs, to apply well-established manufacturing and testing processes, and develop reliable analysis tools to predict in-orbit performance of flight hardware. The experience is also based on numerous successful two-phase cooling system applications in European spacecraft over the last 20 years. Besides streamlining the ESA PSS-49, to arrive at today’s accepted set of heat pipe qualification requirements, the following features have also been taken into account: inclusion of qualification and acceptance requirements for two-phase loops (CPL, LHP); reference to applicable requirements in other ECSS documents; formatting to recent ECSS template in order to produce a document, which can be used in business agreements between customer and supplier. This standard defines requirements for two-phase heat transportation equipment (TPHTE), for use in spacecraft thermal control. This standard is applicable to new hardware qualification activities. Requirements for mechanical pump driven loops (MPDL) are not included in the present version of this Standard. This standard includes definitions, requirements and DRDs from ECSS-E-ST-10-02, ECSS-E-ST-10-03, and ECSS-E-ST-10-06 applicable to TPHTE qualification. Therefore, these three standards are not applicable to the qualification of TPHTE. This standard also includes definitions and part of the requirements of ECSS-E-ST-32-02 applicable to TPHTE qualification. ECSS-E-ST-32-02 is therefore applicable to the qualification of TPHTE. This standard does not include requirements for acceptance of TPHTE. This standard may be tailored for the specific characteristic and constraints of a space project in conformance with ECSS-S-ST-00. This document (EN 16603-31-02:2015) has been prepared by Technical Committee CEN/CLC/TC 5 "Space", the secretariat of which is held by DIN (Germany). This document has been prepared specifically to deal with space systems and therefore takes precedence over any European Standard, as it has the same scope but a wider scope (for example aerospace). The responsible German standardization committee is Working Committee NA 131-06-02 AA "Interoperabilität von Informations-, Kommunikations- und Navigationssystemen" ("Interoperability of information, communication and navigation systems") at DIN Standards Committee Aerospace (NL).