Concurrent Engineering

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Concurrent Engineering

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Concurrent Engineering

  1. 1. Concurrent Engineering Module SESA3002a; Aerospace Design 1 James Scanlan; School of Engineering Sciences
  2. 2. CE Definitions: • “The application of tools, techniques, methodologies, and behavioral initiatives used to minimise product development timescales by maximising the degree of overlap of design activities.” • “A ‘buzz-phrase’ with a limited shelf life?” • “Optimal design.” Module SESA3002a; Aerospace Design 2 James Scanlan; School of Engineering Sciences
  3. 3. Sequential Design (“over-the-fence” approach) Centralised Design Concurrent Design Module SESA3002a; Aerospace Design 3 James Scanlan; School of Engineering Sciences
  4. 4. Concurrent Engineering • Serial engineering: Good – control of two parameters Quick Cheap • Concurrent Engineering: – Attempt to control all three parameters Module SESA3002a; Aerospace Design 4 James Scanlan; School of Engineering Sciences
  5. 5. Case Study Module SESA3002a; Aerospace Design 5 James Scanlan; School of Engineering Sciences
  6. 6. Stringer Manufacturing Early 1980’s A320 rate increase; Severe capacity problems Module SESA3002a; Aerospace Design 6 James Scanlan; School of Engineering Sciences
  7. 7. Stringer Forming Highly labour intensive, Long lead times, Quality critical. Module SESA3002a; Aerospace Design 7 James Scanlan; School of Engineering Sciences
  8. 8. Twisting operation Concern over effect on Fatigue properties ! Module SESA3002a; Aerospace Design 8 James Scanlan; School of Engineering Sciences
  9. 9. Manufacturing Automation Extremely costly capital equipment; high maintenance costs, dedicated function Module SESA3002a; Aerospace Design 9 James Scanlan; School of Engineering Sciences
  10. 10. Some historical perspective….. Module SESA3002a; Aerospace Design 10 James Scanlan; School of Engineering Sciences
  11. 11. CE is not new; P51 DESIGNED + DEVELOPED IN 102 DAYS TECHNOLOGICALLY ADVANCED DESIGNED FOR LOW COST Module SESA3002a; Aerospace Design 11 James Scanlan; School of Engineering Sciences
  12. 12. Supermarine Spitfire • Example of CE? – Good ? – Cheap ? – Quick ? Module SESA3002a; Aerospace Design 12 James Scanlan; School of Engineering Sciences
  13. 13. Bf 109 7000 M/hours, much emphasis on design for Manufacture Module SESA3002a; Aerospace Design 13 James Scanlan; School of Engineering Sciences
  14. 14. DH 98 Mosquito Arguably a good example of CE. Much emphasis on design for manufacture; Use of modular assemblies, split fuselage halves for easy equipping, minimal use of compound curves. Module SESA3002a; Aerospace Design 14 James Scanlan; School of Engineering Sciences
  15. 15. Concorde Design for performance? Technical challenges huge, little opportunity for DFM/DFA? Module SESA3002a; Aerospace Design 15 James Scanlan; School of Engineering Sciences
  16. 16. How do you “do” CE? Module SESA3002a; Aerospace Design 16 James Scanlan; School of Engineering Sciences
  17. 17. Boeing “It is in project management that Boeing hope to gain an advantage over Airbus in the design of the 777”* *Sabbagh; 21st Century Jet Module SESA3002a; Aerospace Design 17 James Scanlan; School of Engineering Sciences
  18. 18. Boeing and CE • Conscious and deliberate • Planned size and number of DBTs – (planned 80 ended up with 250) • Highly structured meetings – (scheduled down to the minute) • Culture change Module SESA3002a; Aerospace Design 18 James Scanlan; School of Engineering Sciences
  19. 19. The Future MULTIMEDIA WALL Team Doc.’n Customer and Ad-Hoc Leader Customer and Ad-Hoc Systems Cost Experts Experts Config. Risks Progr.’s Structure Mechanisms Simulation Instruments AOCS Thermal Propulsion Power DHS Mission GS & Ops Comms ESTEC Dh015 Module SESA3002a; Aerospace Design 19 James Scanlan; School of Engineering Sciences
  20. 20. The Future ESA Concurrent Design Facility (CDF): Module SESA3002a; Aerospace Design 20 James Scanlan; School of Engineering Sciences

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