The percentage of development costs attributed to software is growing rapidly, particularly in high technology products and engineering systems. In addition the risks in development are increasingly associated with software. Purchasing organizations are faced with evaluating development proposals with even larger and sensitive software content. Many procurement managers have little or no background in software. Frequently these managers find it difficult to get valid numbers to help make informed decisions on the procurement of software. Their perception is that there is very limited, or no data, on software projects related to their needs. On-board spacecraft software is an example of a specific type of software application development. In contrast with many other types of software application, such as radar or command and control systems, there are still relatively few on-board spacecraft software systems. The case study described in this paper confirms the availability of basic data.
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