Aircraft concept optimization using the global sensitivity approach and parametric multiobjective figures of meritAn extension of our parametric multidisciplinary optimization method to include design results connecting multiple objective functions is presented. New insight into the effect of the figure of merit (objective function) on aircraft configuration size and shape is demonstrated using this technique. An aircraft concept, subject to performance and aerodynamic constraints, is optimized using the global sensitivity equation method for a wide range of objective functions. These figures of merit are described parametrically such that a series of multiobjective optimal solutions can be obtained. Computational speed is facilitated by use of algebraic representations of the system technologies. Using this method, the evolution of an optimum design from one objective function to another is demonstrated. Specifically, combinations of minimum takeoff gross weight, fuel weight, and maximum cruise performance and productivity parameters are used as objective functions.
Document ID
19930029384
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Malone, Brett (NASA Langley Research Center Hampton, VA, United States)
Mason, W. H. (Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)