A method for optimizing structures to satisfy flutter requirements is presented. The specific algorithm employs a gradient of total weight with respect to variable structural parameters as the specified flutter speed remains constant. Equations are derived for direct calculation of the gradient. In applications thus far, the method has been efficient in reducing structural weight while retaining flutter speed without frequent recalculation of normal modes of vibration. An all-movable horizontal tail application is cited in which the skin alone and then the entire structure is resized. Applications using 2 and 6 modes of vibration are also compared.
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Edward Emil Simodynes (1974) studied this question.
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