ME Spring 2015 Systems & Specialty Engineering,

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Presentation transcript:

ME 59700 Spring 2015 Systems & Specialty Engineering, Mr. Larry Hopp, CPL © Copyright 2013

Agenda Introductions “Formalities” ISS EPS Information Course Content

Introductions Introductions About Larry Hopp Retired Air Force Logistics Officer Subcontractor to Naval Air Warfare Center performing Logistics Engineering Raytheon Logistics Engineering Retired Logistics Engineer Department Manager Reliability, Maintainability, Human Factors (Usability), System Safety, Supportability, Sustainability, and life-cycle cost.

Introductions Introductions Class Introductions Fill out survey Guest lecturer’s may join us throughout the semester including Dr. Surber Use International Space Station (ISS) EPS LRUs for a common project Discuss your work projects (if not proprietary) so we can relate them to specialty engineering

Introductions Class 75 minutes Tuesday and Thursday Required information on all written submissions for grade: Full name Name of assignment : (CP-01, HW-01, Test-01) Date

“Formalities” Required paperwork ATTENDANCE OFFICE HOURS Travel is understood: let me know ahead of time Make arrangements to submit assignments on time OFFICE HOURS By appointment llhopp@comcast.net or lhopp@IUPUI.edu Home phone: 317.773.0872 (preferred) Cell phone: 317.440.1634

“CANVAS” Replacing Oncourse Live Webinars Recorded Webinars https://canvas.iu.edu/lms-prd/app Live Webinars Connect.iu.edu/learncanvas Recorded Webinars http://ittraining.iu.edu/downloads.recording.aspx Canvas Basics for Students Canvas: An Overview

“Our CONTRACT” Knowledge is made available – but YOU must do the learning: Lecture slides are in Power Point – posted on Canvas PRIOR to the class sessions Syllabus - posted on Canvas website Weekly Plan – Posted on Canvas Quizzes (6) Homework (6) Class Project Briefings and written assignments (4) Examinations (2 section tests & Final Exam)

“Our CONTRACT” ON LINE RESOURCE Homework Assignments: Get them from WEEKLY PLAN. Class Projects Quizzes and Tests: Taken IN-CLASS (timed, open book, open notes) FINAL EXAM (IN-CLASS, timed 2 hours, open book, open notes)

“Our CONTRACT” ATTENDANCE – COURSE GRADE Notify instructor BEFORE absence ASSIGNMENTS are due on the date they are due (LATE submittals = 0 points) IN CLASS or submitted to Canvas as directed by Instructor COURSE GRADE straight line percentage, as stated in syllabus (attendance & participation will affect border line grades) (NO CURVE) “NO Bonus Points or EXTRA POINTS” PLEASE DO NOT BE LATE SUBMITTING ASSIGNMENTS

Reading/Studying Technical Material Editors are tough “task masters”; there is a format to a good book, and to a good text book Use the 3-Step Method Skim Get the “big” picture See the outline/structure Sweep (First and Last) Intro & Summary Paragraphs of a section Sentences of a paragraph

Reading/Studying Technical Material Synthesize (Re-visit for the “good stuff”) BOLD items Italicized items Lists Figures, Tables, Footnotes Make notes in the margin, highlight, write questions in pencil, mark up the lectures Draw pictures & Capture “relationships” amongst concepts

Quizzes, Tests, & Final Exam are all open book and open notes. Quizzes and Tests OPEN BOOK & OPEN NOTES NO COLLABORATION (Quizzes, Tests, or FINAL) QUIZZES All QUIZZES in class (10 minutes each) Tests 1, 2 Take in class (75 minutes) Quizzes, Tests, & Final Exam are all open book and open notes. SO WHAT’S TESTABLE? anything in the text book section intro & chapters everything from the lectures

Final and Homework FINAL EXAM HOMEWORK Students take as scheduled in class room (2 hours) Talk to instructor about other arrangements HOMEWORK Submit PRINTED artifact by the start of class on date due Designated questions at the end of Chapters 12 - 17 Submit by the due date on the Calendar

Class Project Briefings Projects Critical Design Review Reliability Maintainability Human Factors/System Safety Producibility & Manufacturing or Life Cycle Cost Use assigned Electrical Power System (EPS) LRUs Oriented toward Ch. 12 – 17.

Class Project Briefings EPS Subsystem LRUs Batteries Battery Charge/Discharge Unit (BCDU) Beta Gimbal Assembly (BGA) DC Switching Unit (DCSU) Electronic Control Unit (ECU) Main Bus Switching Unit (MBSU) Remote Power Controller Modules (RPCM) Sequential Shunt Unit (SSU) Solar Alpha Rotation Joint (SARJ) Solar Array Wing (SAW) Remote Bus Isolators (RBI)

End of “administrivia” Text book (mandatory & testable): Systems Engineering and Analysis, 5th ed., by Ben Blanchard & Wolter Fabrycky, 2011. Useful References (NOT REQUIRED or testable) Defense Acquisition University, Systems Engineering Fundamentals, 2001 System Analysis, Design, and Development, by Charles S. Wasson, 2006. INCOSE, Systems Engineering Handbook, ver.3.2 List of NASA ISS websites useful for information about assigned space station element for class project.

Web Sites INCOSE (home page, members have access to SE Handbook, Metrics Primer, IPAL): http://www.incose.org/ Defense Acquisition University: http://www.dau.mil/ AW&ST online: http://www.aviationweek.com/aw/ Defense Daily Network: http://www.defensedaily.com NASA Tech Briefs: http://www.techbriefs.com SAE International: http://www.sae.org/servlets/index Virginia Polytechnic Institute and State Univ. Carneghie Mellon & SEI (CMMI for Systems) Google = “systems engineering” http://www.google.com/ Wiki-pedia “systems engineering” http://en.wikipedia.org/wiki/main_page See the list of INTERNATIONAL SPACE STATION web sites in the RESOURCES section of COURSE web site

Conceptual Design Design for Support Design of Support Minimize Design of Support Support Resources for performance/readiness Remember the impacts on Operational characteristics Reliability, maintainability, producibility, supportability, sustainability, disposability, human performance, constructability, and life-cycle cost

Figure 2.12 Life-cycle commitment, system-specific knowledge, and incurred cost.

Conceptual Design System Operational Requirements Mission Definition Performance and physical parameters Operational deployment Operational life cycle Utilization requirements Environmental Factors

Conceptual Design System Operational Requirements Effectiveness Factors Life Cycle Cost Operational availability Mean Time Between Maintenance Maintenance Downtime Operator Skill Level

Conceptual Design System Maintenance and Support Usually not given the needed attention early Leads to the Specialty Engineering requirements Leads to the infrastructure requirements Life Cycle Cost

Figure 3.14 System operational and maintenance flow.

Figure 3.15 Major levels of maintenance.

Figure 3.16 System maintenance and repair policy.

Conceptual Design Technical Performance Measures Quantitative Values that describe system performance Estimated, predicted, measured. MTBF, MTBM, MDT, Ao, logistics response time, LCC Influence the system design process What is the most important characteristic?

Figure 3.21 Functional block diagram expansion (partial).

Considerations 92 minutes cycle with 36 minutes dark What are the performance measures (TPM)? Level of Maintenance & Support Architecture Interfaces What are the safety critical functions the EPS has to support? FUNCTIONS

Considerations Specification ISS shall operate for at least (T) 10 years and up to (O) 20 years. ISS shall support a crew of at least (T) 3 crew for 3 months up to (0) a crew 4 for a period of 6 months. Major ISS Systems shall have an MTBF of at least 1,000 hours. Resupply flights shall be at least every (T) 30 days.

Mission Profile Initial Operating Capability ZARA, Zvevday, Destiny, Unity, PMA, Harmony 3 crew for 3 months – 1 EVA every 15 days Resupply every 30 days Trusses & solar panels for 260Volts DC and Battery Storage of 110 KWhrs. Major for power generating at least 500 hours. 24 hr/day * 30 days = 720 hours – Duty cycle – 16 hours full load and 8 hours minimum load.

Mission Profile Analysis Level of Maintenance & Support Architecture Interfaces Functions

Maintenance & Support Concept On ISS (Level 1) no EVA On ISS (Level 2) EVA Spares located on ISS Shuttle Supply (Level 2) Spares from Earth Shuttle with additional crew (Level 3) Special technical SME May/may not do EVA.

Maintenance & Support Concept Ground control/mission control (level 4) Modify software on ISS beyond capability of crew. New modules/solar panels/pumps (level 5) Emergency shuttle mission

Design for Operational Feasibility Design for Reliability Design for Maintainability Design for Usability (Human Factors) System Safety Design for Logistics and Supportability Design for Producibility, Disposability, and Sustainability Design for Affordability (Life-Cycle Costing)

Design for Operational Feasibility Definition – System will perform as intended in an effective and efficient manner in response to a given customer need.

Design for Operational Feasibility Why is operational feasibility important to you? Start early in the design process

Design for Reliability Definition – The ability of a system to perform its intended mission when operating for a designated period of time, or through a planned mission scenario in a realistic operational environment. Properly specified during conceptual design in quantitative terms (TPM) Allocated to subsystems

Design for Maintainability Definition – A design characteristic pertaining to ease, accuracy, safety, and economy in the performance of maintenance functions. Ability of a system to be maintained. Must be built-in to the design Incorporated durng the design and development process

Design for Usability Definition – Understanding between the human and other elements of the system (human systems integration) Design against misuse and abuse System Safety

Design for Logistics and Supportability Definition – Logistics and Supply Chain activities associated with initial procurement and acquisition, manufacture and/or production, and transportation and distribution of the system and its elements to customer operational sites. Subsequent sustaining maintenance and support of the system throughout its planned life cycle.

Design for Producibility, Disposability and Sustainability Producibility is internal to the producer Environmentally conscious design and manufacturing Sustainability is promoting green engineering Disposal in an environmentally friendly way Environmental concerns in all areas

Design for Affordability Life-Cycle Cost Definition – Total Cost of the system over its intended life cycle. Cost from research, design, testing, production, use and support, phase out and disposal must be included