Slide 1Slide 2Slide 3Notes to the ProfessorThe Problem that ??? Process SolvesTerminology: The Hierarchy and ElementsPosition-Controlled Dish Antenna SystemImagine Designing a Part, Component or SubsystemThe Engineering Design Process (EDP)Now Consider Designing a System Made Up of Many SubsystemsCommon Subsystem TypesSlide 12Slide 13So Now What is Systems Engineering (SE)?The Single Systems Engineering Formula:SE = Vee + 11 SE Functions + ToolsThe Vee is a Process ModelVee Chart FeaturesSE = Vee + 11 SE Functions + ToolsFunction 1: Function 2:Function 3: Function 3: Slide 24Function 4:Function 5: Validate and VerifySlide 27Function 6:Function 7: Function 8: Function 9: Function 10: Function 11: Project Management StructureSlide 35SE = Vee + 11 SE Functions + ToolsSlide 37SignOffPageNational Aeronautics and Space Administrationwww.nasa.gov Title MasterNational Aeronautics and Space Administrationwww.nasa.govYour Title Here 2Slide Master•fjufgjfgjfjNational Aeronautics and Space Administrationwww.nasa.gov Chapter 2: The Systems Engineering (SE) ProcessA True StoryScene: Student talking to professor during long car ride to visit senior project sponsorStudent: You know Professor, the easiest class I ever had was Thermodynamics.Professor: What? Why was that?Student: Because it has only one formula!Notes to the Professor•The same presentation shown here is available in CHAPTER X on the WEBPAGE. •GOAL: Teach SE in 1-2 weeks•Learning Acceleration Techniques:1. Led by the professor, System Engineering is “invented” by the class without it being formally introduced. “An Original Thought Exercise”2. The common types of subsystems are introduced3. Students apply the single SE formula4. Students can see examples of every SE function in Chapter X on the WEBPAGEYour Title Here 4The Problem that ??? Process Solves•The problem is: •By what process could be created and operated a “system” (or product) that is complex, requires the skills of different engineering disciplines, is reliable with low risk of failure, with reduced chance of cost overruns and a shortened development time? Your Title Here 5Terminology: The Hierarchy and Elements•Elements of a system are not just hardware but can also include software, and can even include people, facilities, policies, documents and databases.•System - an integrated set of elements that accomplish a defined objective. What is to be created.Subsystem- is a system in its own right, except it normally will not provide a useful function on its own, it must be integrated with other subsystems (or systems) to make a system. »Components are elements that make up a subsystem or system. Parts are elements on the lowest level of the hierarchy.Your Title Here 6Position-Controlled Dish Antenna System•A dish antenna system on earth that receives a radio signal from a satellite, and that will automatically point the dish toward the satellite moving across the horizon. •Motor Control Subsystem - motor, position and velocity sensors, controller, software, wires. (motor is a component)•Structures Subsystem •Communications Subsystem – electronics, dish is a part •Electrical Power SubsystemYour Title Here 7Imagine Designing a Part, Component or Subsystem•Imagine you were asked to design a part, component or subsystem, for example a can opener, a mousetrap, a bicycle, an automotive suspension, etc.•Question: What process would you follow?•Answer: The Engineering Design Process (EDP) Your Title Here 8The Engineering Design Process (EDP)•Project Definition – meet with stakeholders, define the mission objective(s), understand the problem.•Requirements Definition and Engineering Specifications – carefully and thoughtfully develop requirements that will guide the design creation to follow. Clearly document the requirements and receive stakeholder approval before proceeding. •Conceptual Design – generate ideas, compare using trade studies, models, proof-of-concept prototypes, down select to focus on a meritorious concept in the next step.•Product Design, Fabrication and Test – complete all detailed drawings, make or purchase parts and components, assemble and measure performance. If performance requirements are met, begin manufacturing.Your Title Here 9Now Consider Designing a System Made Up of Many SubsystemsYour Title Here 10• EDP Doesn’t offer much guidance for a complex system made up of many subsystems although it would be applicable for design of any subsystemCommon Subsystem Types•Although quite different products, there are common types of subsystems in satellites, rockets and rovers.Your Title Here 11Classroom Discussion #1: What subsystems might be needed for a teleoperated lunar excavator?• •Note that:•In order to create a system to meet the mission objective, design teams would eventually be formed, one team for each expected subsystem.•These specialty design teams will be applying the EDP to design their own subsystem.•The teams will also be applying "Concurrent Engineering", where multiple subsystems are being designed simultaneously by different teams, with strong collaboration across boundaries of subsystems and disciplines. "The objective of concurrent engineering is to reduce the produce development cycle time through a better integration of activities and processes" - NASA Systems Engineering Handbook SP-601S. Your Title Here 12Classroom Discussion #2: List all the tasks you think should be performed to make sure that separately designed subsystems, when integrated together, will create a system able to perform the mission?• The instructor should allocate enough time for the class to discuss, and the professor lists the answers on the board. Alternatively, the class may be broken up into teams of 5 students that work together for 15 minutes, and then each team lists their answers on the board. After this exercise, students will hopefully have a good feel for what "Systems Engineering" is, without it having been defined yet! Your Title Here 13So Now What is Systems Engineering (SE)?•Systems Engineering (SE) is the engineering process to create a system. It is a structured process based on concurrent engineering and that incorporates the Engineering Design Process. •"Systems Engineering (SE) is a disciplined approach for the definition, implementation, integration and operations of a system (product or service) with the emphasis on the