TAILIEUCHUNG - Adamsen, Paul B. - Frameworks for Complex System Development [CRC Press 2000] Episode 1 Part 5

Tham khảo tài liệu 'adamsen, paul b. - frameworks for complex system development [crc press 2000] episode 1 part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | chapter 5 System Development Framework Technical It is not the critic who counts not the man who points out how the strong man stumbled or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena whose face is marred by dust and sweat and blood who strives valiantly who errs and comes short again and again who knows the great enthusiasms the great devotions and spends himself in a worthy cause who at the best knows in the end the triumph of high achievement and who at worst if he fails at least fails while daring greatly so that his place shall never be with those cold and timid souls who know neither victory nor defeat. Theodore Roosevelt In this chapter a detailed decomposition of the System Development Framework SDF building block is developed which was discussed in the preceding chapters. An example loosely drawn from a conceptual spacecraft study done in the early 1990s is included in order to clarify the application of the SDF. The primary focus of the example is functional analysis and decomposition. The spacecraft mission from which this example was drawn was the operation of an astronomical telescope in a low earth orbit. The example is simplified in order to keep attention focused on explaining the application of the SDF to a real development activity. In order to maintain clarity of the SDF discussion the example will be applied at the end of each section. This spacecraft system will be referred to as Example Sat or ESAT for short. The task for the ESAT program is to develop the spacecraft bus that portion of the satellite that supports the telescope in space. As discussed in Chapter 1 the term system has been defined as any entity within prescribed boundaries that performs work on an input in order to generate an output. Using this definition it is asserted that at any level of the development hierarchy there exist one or more systems. At the level below the top level or system level these are .

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