lecture 10: configurations
Post on 23-Mar-2016
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Lecture 10: Configurations
Jason Mickey
For AE 440 A/C LectureSeptember 2009
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
Design ConsiderationsF-16 design included multiple
weapons and multiple mission roleswith high performance
Key parameters included:-wing loading-thrust loading
-control issues (at M~1 & M>1)-empty-weight fraction
-pilot g tolerances
3-View• Important quantitative aspect• Located near the front• Introduce overall features of the design
X-32 3-D Solid Model
Digital modeling reduces design rework, minimizes scrap, and
significantly lowers assembly defects
Center-of-gravity Travel
Configure fuel system and payload placement
to minimize travel
(AE 441) Auxiliary and Avionics
• Air Conditioners• Bleed-air• Avionics locations• Cross-flow for engine restart
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…”
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
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