Unsteady Subsonic Aerodynamics for Maneuvering Wing/Fuselage/Pylon/Store Configuration and Store Separation including Wake Effects,
Abstract
INTER A Computational Fluid Dynamics (CFD) technique in based on a Vortex Lattice Method (VLM) is presented for treating the unsteady, low speed aerodynamics of a Wing/Fuselage/Pylon/Store(W/F/P/S) combination in an incompressible flow. The main emphasis is placed on a gene practical, cost-effective engineering solution of the complex problem with a reasonable computational efficiency allowing the computer code to run on small personal computers. The computational model presented in this study enables the calculation of the unsteady aerodynamic forces acting on a wing system from undergoing a time dependent three dimensional motion. An unsteady. wing following and wake shedding procedure provides the transient wake shapes. Computed flow field simulations are presented for various unsteady and angle of attack conditions, involving pylon/store locations at various spanwise locations under the wing. The external store separation under the influence of the unsteady wake rollup behind the wing system is modeled by considering the full mutual interaction between the store and the W/F/P configuration. The results show that the method is capable of simulating the important features of the unsteady forces and wake development behind the W/F/P/S configuration.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1995
- Accession Number
- ADA360532
Entities
People
- C. Kaykayoglu
- M. Yalcinel
Organizations
- Istanbul University