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Model-Based Engineering Design for Trade Space Exploration throughout the Design CycleThis paper presents ongoing work to standardize model-based system engineering as a complement to point design development in the conceptual design phase of deep space missions. It summarizes two first steps towards practical application of this capability within the framework of concurrent engineering design teams and their customers. The first step is standard generation of system sensitivities models as the output of concurrent engineering design sessions, representing the local trade space around a point design. A review of the chosen model development process, and the results of three case study examples, demonstrate that a simple update to the concurrent engineering design process can easily capture sensitivities to key requirements. It can serve as a valuable tool to analyze design drivers and uncover breakpoints in the design. The second step is development of rough-order- of-magnitude, broad-range-of-validity design models for rapid exploration of the trade space, before selection of a point design. At least one case study demonstrated the feasibility to generate such models in a concurrent engineering session. The experiment indicated that such a capability could yield valid system-level conclusions for a trade space composed of understood elements. Ongoing efforts are assessing the practicality of developing end-to-end system-level design models for use before even convening the first concurrent engineering session, starting with modeling an end-to-end Mars architecture.
Document ID
20090007571
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Lamassoure, Elisabeth S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wall, Stephen D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Easter, Robert W. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
September 1, 2004
Subject Category
Engineering (General)
Meeting Information
AIAA Space Conference and Exposition(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
models
trades
conceptual designs