High Fidelity Aero Servo Elastic Analysis for Full Configurations in a Modular Computational Environment

Over the last few years the United States Air Force has invested in nonlinear analysis capabilities that can be applied to complete aircraft simulations. Due to the risk associated with the development of new platforms that may push the restrictive boundaries of linear analysis tools the Nonlinear MEthods in Design and Analysis (NMEDA) program was introduced to better understand the impact that these nonlinearities have in a vehicles response. Specifically SensorCraft configurations, such as the joined wing and flying wing, are being considered as initial test cases. The following paper discusses the validation effort that has gone along with making AFRL’s in house unstructured CFD solver AVUS aeroelastic capable. It also presents the current work being done to improve or introduce capability for full configuration simulations of free flying vehicles.

[1]  Robert A. Canfield,et al.  Joined-Wing Aeroelastic Design with Geometric Nonlinearity , 2005 .

[2]  Robert A. Canfield,et al.  Joined-Wing Sensor-Craft Configuration Design , 2004 .

[3]  Robert C. Scott,et al.  Aeroservoelastic Testing of a Sidewall Mounted Free Flying Wind-Tunnel Model , 2008 .

[4]  M. H. Love,et al.  Aerodynamic Analysis for the Design Environment (AANDE). Volume 2. User's Manual , 1999 .

[5]  Dewey H. Hodges,et al.  Introduction to Structural Dynamics and Aeroelasticity: Contents , 2002 .

[6]  Charbel Farhat,et al.  Design and analysis of ALE schemes with provable second-order time-accuracy for inviscid and viscous flow simulations , 2003 .

[7]  Reid Melville Nonlinear simulation of F-16 aeroelastic instability , 2001 .

[8]  Jiri Blazek,et al.  Computational Fluid Dynamics: Principles and Applications, Second Edition , 2001 .

[9]  E. Carson Yates,et al.  AGARD standard aeroelastic configurations for dynamic response. Candidate configuration I.-wing 445.6 , 1987 .

[10]  Vincent J. Harrand,et al.  Development of a Multi-Disciplinary Computing Environment (MDICE) , 1998 .

[11]  D. Mavriplis,et al.  Mesh deformation strategy optimized by the adjoint method on unstructured meshes , 2007 .

[12]  V. Venkatakrishnan Convergence to steady state solutions of the Euler equations on unstructured grids with limiters , 1995 .

[13]  V. Venkatakrishnan On the accuracy of limiters and convergence to steady state solutions , 1993 .

[14]  Dewey H. Hodges,et al.  Introduction to Structural Dynamics and Aeroelasticity , 2002 .

[15]  E. Carson Yates,et al.  AGARD standard aeroelastic configurations for dynamic response , 1989 .

[16]  Charbel Farhat,et al.  Higher-Order Staggered and Subiteration Free Algorithms for Coupled Dynamic Aeroelasticity Problems , 1998 .

[17]  Jiri Blazek Chapter 5 – Unstructured Finite Volume Schemes , 2005 .

[18]  Robert Tomaro,et al.  The defining methods of Cobalt-60 - A parallel, implicit, unstructured Euler/Navier-Stokes flow solver , 1999 .