BS ISO 10788:2014 pdf free

BS ISO 10788:2014 pdf free.Space systems – Lunar simulants
Reference [3] provided a compilation of properties from Apollo and Lunakhod lunar samples of use to the scientific community. These properties are listed since a large amount of data exists for lunar regolith characterization using these properties. As demanded by scientific definitions, these properties are qualitative and quantitative. This means some properties can be measured directly while others are descriptive and are not readily measurable. While these properties are of value to planetary or lunar scientists, they do not address the needs of lunar systems developers and operators with a specific quantitative measure for lunar regolith simulants in comparison to other simulants and with relation to sampled lunar materials.
Lunar simulants can be measured as lunar samples were measured and published using 22 listed properties (see Clause 3). However, the quality of lunar simulants measured in this way cannot be readily compared to lunar source material nor communicated across development and operational communities. Comparison of these measures for simulants for other than scientific purposes is not
recommended.
The more useful qualification of lunar simulants is tied to lunar minerologies and is expressed most concisely in four figures of merit: composition, size, shape, and density. The figures of merit for lunar simulants range from zero to one. A figure of merit value of zero indicates no useful correlation to a comparative sample. A figure of merit value of one indicates exact correlation as defined by the standard measurements to a comparative sample. A specific quantitative measure for lunar regolith simulants is made only in comparison to other simulants or with relation to sampled lunar materials from Apollo and Lunakhod missions. Data from existing lunar samples are necessary to use these figures of merit to establish a real baseline from the lunar surface.
Comparative (quantitative) measures shall be stated for lunar simulants. Figures of merit for a simulant shall be stated against a single baseline. If multiple baselines are referenced for a simulant, a complete set of figures of merit shall be calculated for each reference.BS ISO 10788 pdf free download.