Wing Structural Weight Approximations

نویسندگان

  • Melih Papila
  • Raphael T. Haftka
چکیده

The paper explores the effect of numerical noise and uncertainties on response surface approximations for wing bending material weight for a high speed civil transport (HSCT) design. The accuracy of the response surface approximations is improved by identification and repair of outliers present in the data due to noisy structural optimization. The use of correction response surface approximations is also investigated. Error analysis compares the importance of noise and modeling error sources in approximation. The most accurate approximation is studied for sensitivity to uncertainty in problem data. The data are treated as fuzzy variables and the vertex method is applied to calculate the uncertainty in wing bending material. Substantial variation in levels of uncertainty is found over the design space.

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تاریخ انتشار 1999