6 Part 6: V-Modell Reference Activities

6.3 Activities

6.3.12 Logistic Conception

6.3.12.3 Performing Logistic Calculations and Analyses

Purpose

As a result of the calculations and analyses, logistic support may be designed. In addition, possible false decisions or deficiencies in the development shall be identified early and corrected (design influence). Logistic analyses shall be made parallel to the development activities. The results that are obtained shall be provided directly so that they can be used for decisions on changes and adaptations of the design.

Before calculations and analyses will be made, it shall be coordinated with the acquirer to what extent and at what time data will be provided. Furthermore is shall be clarified in what form - paper, data carrier, software tool - the data will be provided, processed and passed on. After making the analyses and calculations and before the results will be submitted to the acquirer, the quality of the results shall be verified and ensured.

6.3.12.3.1 Planning Calculations and Analyses

The tailoring of the norms and standards to be used to the respective product will be carried out by the »Logistics Developer, who will select the applicable norms and standards in the required version in accordance with the contract documents (see »Fault/Reliability Analysis ). If no particular norm is specified, the most suited standar (with regard to costs, data availability) will be used. The norms and standards will define a large part of the analyses and calculations that will have to be made.

In case of very complex systems, in particular flying systems, the acquirer will demand a »Logistic Support Analysis (LSA). The LSA will be described in the military standards »MIL-STD 1388-1A and »MIL-STD 1388-2B and include the logistic analyses and calculations.

Logistic calculations and analyses will be planned in the activity »Planning Project of the »Process Module »Project Management.

6.3.12.3.2 Acquiring Data for Calculations and Analyses

The basic data from the software and hardware development shall be collected. Typically this will concern bills of material, wiring diagrams, documents produced in the development process (for example hardware architecture) and additional information sources, for example standard information about components and equipment and component information from the developer or from equipment engineering.

6.3.12.3.3 Performing Calculations and Analyses

After acquisition of the data and the tailoring of the norms and standards that shall be applied to the order, the necessary analyses and calculations shall be made. If weaknesses of the design are identified during the analysis, the responsible »System Architect shall be consulted.

6.3.12.3.4 Preparing Report on Project Results

The results of the logistic calculations and analyses shall be clearly arranged and presented in the product »Logistic Calculations and Analyses. This will include also the description of identified weak points. If this is technically and contractually possible, suggestions for tradeoffs or improvement potentials shall be identified.

The verified results shall be described and also explained and commented.

After their verification and release, the results shall be submitted to the acquirer and, if necessary, presented. After the report was accepted, the activities can be finished.