Comparison of Vortex Lattice and Prandtl-Munk Results for Optimized Three-Surface Aircraft
The results of Prandtl-Munk theory for prediction of the induced drag of three-surface general aviation aircraft have been examined and compared with vortex lattice results. Substantial differences between the two predictions have been shown in the presence of practical non-elliptic spanwise load distributions. At the same time, a parametric study 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 demonstrated that while the three-surface geometry is more efficient than a canard configuration, it remains inferior to a conventional design.
K. Rokhsaz and B. P. Selberg, "Comparison of Vortex Lattice and Prandtl-Munk Results for Optimized Three-Surface Aircraft," Aircraft Design and Technology Meeting, American Institute of Aeronautics and Astronautics (AIAA), Jan 1986.
The definitive version is available at https://doi.org/10.2514/6.1986-2695
Aircraft Systems, Design and Technology Meeting
Mechanical and Aerospace Engineering
Article - Conference proceedings
© 1986 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.