Accession Number:

ADA066606

Title:

Factors Influencing the Accuracy of Aerodynamic Hinge-Moment Prediction

Descriptive Note:

Final rept. Apr 77-Apr 78

Corporate Author:

BOEING AEROSPACE CO SEATTLE WA

Personal Author(s):

Report Date:

1978-08-01

Pagination or Media Count:

107.0

Abstract:

This report is concerned with factors influencing the accuracy of aerodynamic hinge-moment analyses. The formulation and coding of the hinge- moment analysis in the FLEXSTAB system of computer programs are reviewed. The investigation is centered on the sensitivity of the hinge moments of the YF-16 airplane to paneling configuration, including the near-fieldfar-field techniques. The results are compared with test data. The effect of elasticity is also considered. The other existing aerodynamic methods for predicting control-surface loading are also reviewed and discussed. These methods include Datcom, RHO 4, higher order lifting-surface methods such as TEA 230 and the PAN AIR pilot program, and new theoretical approaches employing asymptotic expansion methods to account for local hinge-line, corner, and side-edge effects. Recommendations are made as to the best approach currently to employ in the panel methods, as well as future research areas related to hinge-moment analysis. Author

Subject Categories:

  • Attack and Fighter Aircraft
  • Fluid Mechanics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE