This document provides the general description of the methodology of applying computer simulation methods which relate to different space and time scales to modelling processes occurring in nanostructured materials under the space environment impact.

The document can be applied as a reference document in spacecraft designing, forecasting the spacecraft lifetime, conducting ground-based tests, and analysing changes of material properties during operation.

NOTE This method is an engineering method used for satellite design and similar purposes.

Small spacecraft may employ untraditional spacecraft development and management philosophy. These spacecraft projects are usually budget-limited or mass-limited, which makes a single (exclusive) launch unaffordable.

The scope of this document encompasses different categories of small spacecraft — so-called mini-, micro-, nano-, pico- and femto-, as well as CubeSat, spacecraft. Therefore, for the sake of convenience, the term "small spacecraft" is used throughout this document as a generic term.

Regardless of the development philosophy, there are minimum requirements every spacecraft complies with. This document explicitly states those requirements and also refers to existing applicable standards. In that sense, this document serves as the top document to cover the minimum requirements for various stages of small spacecraft system life-cycle — with emphasis on design, launch, deployment, operation, and disposal phases. In this way, (1) safety, (2) harmlessness to co-passengers and launcher, and (3) debris mitigation, are all assured.

This document is addressed to small spacecraft developers, as well as dispenser providers and/or the launch operators.

Many of the proton data observed in GEO are archived, for example GMS (Japan), METEOSAT (ESA) and GOES (USA). This method is a direct integration of these fluence data (or the observed data over 11 years is used periodically).

As a result, the confidence level can be selected from a model of solar proton fluences.

ISO/TS 12208:2011 is an engineering-oriented method used for specific purposes such as estimating solar panel degradation.

ISO/TR 23462:2007 provides a holistic approach for programme/project managers to apply their organization's programme/project management practices when defining the management framework for programme/project planning. It is based on a systematic method of

• defining the programme/project objectives and success criteria,
• identifying and elaborating the specific characteristics of their programme/project,
• specifying the management elements needed,
• establishing and agreeing the management approaches to be implemented,
• compiling these into a programme/project management framework document.

The guidelines in ISO/TR 23462:2007 are applicable to any organization undertaking the execution of space programmes/projects.

This document gives guidelines for multi-geo spacecraft collocation, and it applies in particular to multi-geo constellation.