Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Sharon L. Padula"'
Publikováno v:
AIAA Journal. 40:1764-1772
Free-form shape optimization of airfoils to minimize drag directly poses unexpected difficulties. Practical experience has indicated that a deterministic optimization for discrete operating conditions can result in dramatically inferior performance w
Autor:
S. C. Stone, Sharon L. Padula
Publikováno v:
Structural Optimization. 16:176-185
Advances in computer technology and performance allow researchers to pose useful optimization problems that were previously too large for consideration. For example, NASA Langley Research Center is investigating the large structural optimization prob
Publikováno v:
Journal of Combinatorial Optimization. 1:229-250
Cabin noise in turboprop aircraft causes passenger discomfort, airframe fatigue, and employee scheduling constraints due to OSHA standards for exposure to high levels of noise. The noise levels in the cabins of turboprop aircraft are typically 10 to
Publikováno v:
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference20th AIAA/ASME/AHS Adaptive Structures Conference14th AIAA.
Supersonic aircraft designers must shape the outer mold line of the aircraft to improve multiple objectives, such as mission performance, cruise efficiency, and sonic-boom signatures. Conceptual designers have demonstrated an ability to assess these
Autor:
Sharon L. Padula
Publikováno v:
13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference.
Flight testing that is planned for October 2010 will provide an opportunity to evaluate rotorcraft trajectory optimization techniques. The flight test will involve a fully instrumented MD-902 helicopter, which will be flown over an array of microphon
Publikováno v:
Structural Optimization. 4:65-74
The interdisciplinary optimization of engineering systems is discussed from the standpoint of the computational alternatives available to the designer. The analysis of such systems typically requires the solution of coupled systems of nonlinear algeb
Publikováno v:
12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference.
An approach for conducting reliability-based design and optimization (RBDO) of a Boeing 767 raked wing tip (RWT) is presented. The goal is to evaluate the benefits of RBDO for design of an aircraft substructure. A finite-element (FE) model that inclu
Autor:
Sharon L. Padula, Ronnie E. Gillian
Publikováno v:
11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference.
This paper traces the history of engineering frameworks and their use by Multidisciplinary Design Optimization (MDO) practitioners. The approach is to reference papers that have been presented at one of the ten previous Multidisciplinary Analysis and
Publikováno v:
Fourth International Symposium on Uncertainty Modeling and Analysis, 2003. ISUMA 2003..
The Multidisciplinary Optimization (MDO) Branch at NASA Langley Research Center develops new methods and investigates opportunities for applying optimization to aerospace vehicle design. This paper describes MDO Branch experiences with three applicat
Autor:
Sharon L. Padula, Wu Li
Publikováno v:
21st AIAA Applied Aerodynamics Conference.
From time to time, existing aircraft need to be redesigned for new missions with modified operating conditions such as required lift or cruise speed. This research is motivated by the needs of conceptual and preliminary design teams for smooth airfoi