This article presents an integrated multistate method for the early-phase design of inherently robust systems; namely, those capable, as a prima facie quality, of maintaining adequate performance in the face of probabilistic system events or failures. The methodology merges integrated multidisciplinary analysis techniques for system design with behavioral-Markov analysis methods used to define probabilistic metrics such as reliability and availability. The result is a multistate approach that concurrently manipulates design variables and component failure rates to better identify key features for an inherently robust system. This methodology is demonstrated on the design of a long-endurance unmanned aerial vehicle for a three-month ice surveillance mission over Antarctica. The vehicle is designed using the multistate methodology and then compared to a baseline design created for the best performance under nominal conditions. Results demonstrated an improvement of 10–11% in system availability over this period with minimal impacts on cost or performance.
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October 2012
Special Section: New Problem Formulations For Design Under Uncertainty
Design of Long-Endurance Systems With Inherent Robustness to Partial Failures During Operations Available to Purchase
Jeremy Agte,
e-mail: [email protected]
Jeremy Agte
Assistant Professor
Department of Aeronautics and Astronautics, Air Force Institute of Technology
, Wright-Patterson AFB, OH 45433
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Nicholas Borer,
Nicholas Borer
Systems Design Engineer
e-mail: [email protected]
The Charles Stark Draper Laboratory
, Cambridge, MA
02139
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Olivier de Weck
e-mail: [email protected]
Olivier de Weck
Associate Professor
Department of Aeronautics and Astronautics, Engineering Systems Division, Massachussetts Institute of Technology
, Cambridge, MA
, 02139
Search for other works by this author on:
Jeremy Agte
Assistant Professor
Department of Aeronautics and Astronautics, Air Force Institute of Technology
, Wright-Patterson AFB, OH 45433e-mail: [email protected]
Nicholas Borer
Systems Design Engineer
The Charles Stark Draper Laboratory
, Cambridge, MA
02139e-mail: [email protected]
Olivier de Weck
Associate Professor
Department of Aeronautics and Astronautics, Engineering Systems Division, Massachussetts Institute of Technology
, Cambridge, MA
, 02139e-mail: [email protected]
J. Mech. Des. Oct 2012, 134(10): 100903 (15 pages)
Published Online: September 28, 2012
Article history
Received:
January 19, 2012
Revised:
June 18, 2012
Published:
September 21, 2012
Online:
September 28, 2012
Citation
Agte, J., Borer, N., and de Weck, O. (September 28, 2012). "Design of Long-Endurance Systems With Inherent Robustness to Partial Failures During Operations." ASME. J. Mech. Des. October 2012; 134(10): 100903. https://doi.org/10.1115/1.4007574
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