BS ISO 10784-1 pdf download Space systems — Early operations Part 1: Spacecraft initialization and commissioning
A general definition of initialization is that it begins at separation of the spacecraft(SC) from the launcher. Ilnsome cases, a more exact definition will be that initialization begins in flight, upon planned change in mode orstate of the SC from the launch configuration.Commissioning is completed when the sC, including its payload,is certified for initial mission operations. Prior to certification for mission operations, the SC is described as atest article in the three parts of ISO10784.ISO 10784 does not include a requirement for contingency plans,but does include a statement of the need for contingency planning.
This part of lS0 10784 outines general descriptive information for SC initialization and commissioning as mightbe appropriate for programme management, project engineering or programme test documentation. Since thesC is considered a test article at this phase of its operational life, ISo 17566 is used as a normative reference inconstructing the initialization plan and the commissioning report. It provides SC manufacturers, SC operatorsand other stakeholders with a common language and form to verify and document spacecraft initialization andcommissioning prior to normal sC mission operations.
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies.For undated references, the latest edition of the referenced document(including any amendments) applies.
ISO 10784-3:2011,Space systems — Early operations — Part 3: Commissioning reportISO 17566,Space systems- General test documentation
ISO 24113:2011, Space systems — Space debris mitigation requirements
3Terms, definitions and abbreviated terms
3.1Terms and definitions
For the purposes of this document, the following terms and definitions apply.
certification of a spacecraft as ready for mission operations
period from initialization to commissioning for mission operations
initial functional and operational checkout of a spacecraft following separation from the launch vehicle
3.2 Abbreviated terms
LV launch vehicle
4 Introduction clause of an initialization plan or commissioning report
The introduction clause of an initialization plan or commissioning report shall provide general information about the technical content of the initialization plan and the commissioning report. It shall include a brief description of the initialization sequence. The overall initialization objective shall be described, and the criteria for the SC certification shall be stated.
4.2 Overall sequence of initialization events This subclause of the introductory clause shall summarize the overall sequence of functional and operational sequences conducted to demonstrate the initial operational status of the spacecraft with respect to the operational environment and shall explain how the test in question fits into this sequence. The starting mode of the spacecraft shall be the same as the launch mode. The ending mode of the spacecraft shall be the initial operational mode.
4.3 Overall relations of commissioning functions This subclause shall summarize the minimum overall relations and status of spacecraft functions demonstrated to verify the initial operational capability of the system.
4.4 Orbital-debris considerations in spacecraft initialization and commissioning
4.4.1 General Orbital-debris generation is a major consideration during spacecraft initialization and will impose limitations. It is possible that limitations might be placed on both the spacecraft and the launch vehicle in this phase.
4.4.2 Hardware retention Hardwareretentionrequirementsrelevantduringspacecraftinitializationshallbeaddressed(seeISO 24113:2011, Subclause 6.1). 4.4.3 Avoiding damage This subclause shall summarize the retention measures taken to avoid the release of hardware into space (see ISO 24113:2011, Subclause 6.1). Failure to control separation of space objects might result in later contact with, and damage to, the spacecraft.
4.4.4 Collision avoidance This subclause shall summarize the measures taken for avoiding collisions. Collision avoidance recommendations relevant during spacecraft initialization are contained in the IADC Space Debris Mitigation Guidelines, Revision 1 (September 2007), Subclause 5.4.
4.4.5 Conjunction analysis This subclause shall summarize the conjunction analysis performed for the purpose of collision avoidance. Conjunction analysis recommendations relevant during spacecraft initialization are contained in the IADC Space Debris Mitigation Guidelines, Revision 1 (September 2007), Subclause 5.4.