Title

Three-Surface Aircraft - Optimum vs. . . Typical

Abstract

Comparisons of the induced drag for a three-surface general aviation aircraft were made using a vortex lattice method and Prandtl-Munk theory. Substantial differences between the two prediction methods have been shown in the presence of practical nonelliptic spanwise load distributions. At the same time, a parametric study using the vortex lattice method has been carried out to determine the sensitivity of lift to induced-drag ratio to different design variables. Using the resulting trends, a three-surface general aviation aircraft has been modeled and compared with its equivalent canard and conventional configurations. It has been shown that although the three-surface geometry is more efficient than a canard configuration, it remains inferior to a conventional design.

Department(s)

Mechanical and Aerospace Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1989 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.


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