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CFD-Based Aerodynamic Analysis of Damaged Delta Wings

[+] Author Affiliations
Charbel Bou-Mosleh

Notre Dame University-Louaize, Zouk Mosbeh, Lebanon

Samir Patel

HighVista Strategies, Boston, MA

Paper No. IMECE2014-38420, pp. V001T01A039; 8 pages
doi:10.1115/IMECE2014-38420
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4642-1
  • Copyright © 2014 by ASME

abstract

This paper addresses the aerodynamic response of damaged delta wings using steady-state Computational Fluid Dynamics simulations. Two types of delta wings are investigated: a High Speed Civil Transport (HSCT) wing and a F16 Block 40 Wing. These types of analyses are required to help predict wings’ remaining flight capability, after damage is inflicted (during battle). The damage is represented by a hole in the CFD model of both wings. Variations in the shape, size, location and orientation of holes are investigated. The lift and drag (at relatively low angles of attack) of the undamaged and damaged wings are predicted and compared. The obtained numerical results indicate that the location of the hole has a significant effect on the performance of the wing. Furthermore, straight-edged holes seem to have a larger impact on the wing’s aerodynamics as opposed to cylindrical-shaped holes. To make the shape of the hole as realistic as possible, petals emerging above the surface of the wing are introduced and their effect is also investigated. Results show a greater increase in drag compared to smooth cylindrical holes. Finally, and to better simulate the jet in cross flow mainly the strong-jet phenomenon, preliminary time-accurate high angles of attack simulation results will be presented.

Copyright © 2014 by ASME

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