The genetic algorirhm (GA) is a search algorirhm that mimics the pamrns of natural selection and reproduction displayed by biologi'cal populations. The GA's operation as a non-calculus-based search and optimization method makes it a good candidare for use in conceptual design. This paper presents a discussion of the use of a G A as an automated approach to conceptual design of helicopters. To accomplish this task, a G A war combined with an industry-standard helicopter sizing code. This resulting genetic algorithm-based design code mas then used to generare conceptual designs for the medium 113 replacement helicopter and a hypothetical attack helicopter. Results of these design effom are discussed, providing insight into the use of a G A to automate the conceptual design of helicopters.
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