Factors Influencing the Accuracy of Aerodynamic Hinge-Moment Prediction

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-field/far-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)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1978
Accession Number
ADA066606

Entities

People

  • Michael D. Clarke
  • Wen-fan Lin

Organizations

  • Boeing

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamic Configurations
  • Aircrafts
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Control Surfaces
  • Differential Equations
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Horizontal Stabilizers
  • Planimetry
  • Pressure Distribution
  • Split Flaps
  • Stabilization Systems

Readers

  • Aerodynamics/Aeronautics.
  • Calculus or Mathematical Analysis
  • Systems Analysis and Design