1. Lecture 10: Configurations Jason Mickey For AE 440 A/C Lecture September 2009

2. Configuration Responsibilities Design and determine the location, relationship and weights of primary component parts Calculate the center-of-gravity range and moments of inertia (to Stability) Integrate and control all external dimensions, including cross-sectional and plan-form aspects (wing data from Aerodynamics; non-wing data to Aerodynamics) Integrate all configurations with CAD renderings Get structural component dimensions and design and optimize remaining internal component placement

3. Design Considerations F-16 design included multiple weapons and multiple mission roles with high performance Key parameters included: -wing loading -thrust loading -control issues (at M~1 & M>1) -empty-weight fraction -pilot g tolerances

4. Design Considerations Grumman QSP Concept Selection

5. 3-View Important quantitative aspect Located near the front Introduce overall features of the design

6. Design Considerations

7. F-18 Internal Configuration

8. X-32 3-D Solid Model Digital modeling reduces design rework, minimizes scrap, and significantly lowers assembly defects

9. Weights and Balances I xx, I yy, I zz About c.g. Needed for Stability

10. Center-of-gravity Travel Configure fuel system and payload placement to minimize travel

11. Systems Electrical Hydraulic Auxiliary Avionics

12. (AE 441) Electrical

13. (AE 441) Hydraulic

14. (AE 441) Auxiliary and Avionics Air Conditioners Bleed-air Avionics locations Cross-flow for engine restart

15. Samples of Configurations from Previous CDRs

16. AE 440 3-View/Isometric View

17. AE 440 Selection Reasoning “The best LSA configuration for internal configuration reasons would be the LWT because having the fuel in the wings creates a more stable platform as it lowers the y-axis center of gravity which is discussed further in Section 6.4…”

18. AE 441 Final Configuration

20. Weight Buildup

21. CDR Suggestions Re-estimate aircraft weight/size every week Design deployment aspects & work with cost Incorporate data for external configuration Place components for internal configuration Communicate design problems and conflicts Get details on sub-systems size, weight, cost Trade studies: e.g. size vs. payload weight