Three-Dimensional Aeroelastic and Aerothermoelastic Behavior in Hypersonic Flow

The aeroelastic and aerothermoelastic behavior of three-dimensional configurations in hypersonic flow regime are studied. The aeroelastic behavior of a low aspect ratio wing, representative of a fin or control surface on a generic hypersonic vehicle, is examined using third order piston theory, Euler and Navier-Stokes aerodynamics. The sensitivity of the aeroelastic behavior generated using Euler and Navier-Stokes aerodynamics to parameters governing temporal accuracy is also examined. Also, a refined aerothermoelastic model, which incorporates the heat transfer between the fluid and structure using CFD generated aerodynamic heating, is used to examine the aerothermoelastic behavior of the low aspect ratio wing in the hypersonic regime. Finally, the hypersonic aeroelastic behavior of a generic hypersonic vehicle with a lifting-body type fuselage and canted fins is studied using piston theory and Euler aerodynamics for the range of 2.5 M 28, at altitudes ranging from 10,000 feet to 80,000 feet. This analysis includes a study on optimal mesh selection for use with Euler aerodynamics. In addition to the aeroelastic and aerothermoelastic results presented, three time domain flutter identification techniques are compared, namely the moving block approach, the least squares curve fitting method, and a system identification technique using an Auto-Regressive model of the aeroelastic system. In general, the three methods agree well. The system identification technique, however, provided quick damping and frequency estimations with minimal response record length, and therefore oers significant reductions in computational cost. In the present case, the computational cost was reduced by 75%. The aeroelastic and aerothermoelastic results presented illustrate the applicability of the CFL3D code for the hypersonic flight regime.

[1]  M Lee Elizabeth,et al.  Calculation of AGARD Wing 445.6 Flutter Using Navier-Stokes Aerodynamics , 1993 .

[2]  Liviu Librescu,et al.  Aeroelastic Tailoring of Composite Wings Exhibiting Nonclassical Effects and Carrying External Stores , 2000 .

[3]  Elizabeth M. Lee-Rausch,et al.  Wing flutter boundary prediction using unsteady Euler aerodynamic method , 1993 .

[4]  Earl A. Thornton,et al.  Thermal Structures for Aerospace Applications , 1996 .

[5]  William L. Kleb,et al.  Aeroheating Predictions for X-34 Using an Inviscid Boundary-Layer Method , 1999 .

[6]  Peretz P. Friedmann,et al.  Aeroelasticity of a Generic Hypersonic Vehicle , 2002 .

[7]  Bernard Budiansky,et al.  Influence of Aerodynamic Heating on the Effective Torsional Stiffness of Thin Wings , 1956 .

[8]  Thomas A. Zeiler,et al.  A flutter investigation of all-moveable NASP-like wings at hypersonic speeds , 1993 .

[9]  Peretz P. Friedmann,et al.  Hypersonic Aerothermoelastic Studies for Reusable Launch Vehicles , 2004 .

[10]  R. N. Desmarais,et al.  Curve fitting of aeroelastic transient response data with exponential functions , 1976 .

[11]  Thomas A. Zeiler,et al.  Aeroelastic character of a National Aerospace Plane demonstrator concept , 1993 .

[12]  J. Halleux,et al.  An arbitrary lagrangian-eulerian finite element method for transient dynamic fluid-structure interactions , 1982 .

[13]  B. J. Thuruthimattam,et al.  Fundamental studies in hypersonic aeroelasticity using computational methods. , 2005 .

[14]  Charbel Farhat,et al.  An Integrated Platform for the Simulation of Fluid-Structure-Thermal Interaction Problems , 2002 .

[15]  Holt Ashley,et al.  Piston Theory-A New Aerodynamic Tool for the Aeroelastician , 1956 .

[16]  Peter Hartwich,et al.  Method for perturbing multiblock patched grids in aeroelastic and design optimization applications , 1997 .

[17]  Walter C. Engelund,et al.  Aerothermoelastic analysis of a NASP demonstrator model , 1993 .

[18]  I. E. Garrick,et al.  A SURVEY OF AEROTHERMOELASTICITY , 1963 .

[19]  P. Chen,et al.  Unified Hypersonic/Supersonic Panel Method for Aeroelastic Applications to Arbitrary Bodies , 2002 .

[20]  Robert M. Bennett,et al.  Modern wing flutter analysis by computational fluid dynamics methods , 1988 .

[21]  L. Pagel,et al.  Design and Fabrication of a Radiative Actively Cooled Honeycomb Sandwich Structural Panel for a Hypersonic Aircraft. , 1978 .

[22]  John T. Batina,et al.  Aeroelastic Analysis of Wings Using the Euler Equations with a Deforming Mesh , 1991 .

[23]  John P. Rodgers,et al.  Aerothermoelastic Analysis of a NASP-Like Vertical Fin , 1992 .

[24]  T. Hughes,et al.  Space-time finite element methods for elastodynamics: formulations and error estimates , 1988 .

[25]  W. Bousman,et al.  Application on the moving-block analysis , 1981 .

[26]  Woodrow Whitlow,et al.  An overview of aeroelasticity studies for the National Aero-Space Plane , 1993 .

[27]  Andrew Arena,et al.  Application of the transpiration method for aeroservoelastic prediction using CFD , 1998 .

[28]  J. Batina.  Unsteady Euler airfoil solutions using unstructured dynamic meshes , 1989 .

[29]  Earl A. Thornton,et al.  Aerothermodynamics: A Tutorial Discussion , 1992 .

[30]  Scott A. Berry,et al.  X-33 Hypersonic Boundary Layer Transition , 1999 .

[31]  Oddvar Bendiksen,et al.  A new approach to computational aeroelasticity , 1991 .

[32]  T. Tezduyar,et al.  A new strategy for finite element computations involving moving boundaries and interfaces—the deforming-spatial-domain/space-time procedure. I: The concept and the preliminary numerical tests , 1992 .

[33]  Kajal Gupta,et al.  CFD-based aeroelastic analysis of the X-43 hypersonic flight vehicle , 2001 .

[34]  Chuh Mei,et al.  Review of Nonlinear Panel Flutter at Supersonic and Hypersonic Speeds , 1999 .

[35]  S. M. Batill,et al.  Digital time series analysis for flutter test data , 1992 .

[36]  Robert C. Scott,et al.  A method of predicting quasi-steady aerodynamics for flutter analysis of high speed vehicles using steady CFD calculations , 1993 .

[37]  R. V. Doggett,et al.  Determination of subcritical damping by moving-block/randomdec applications , 1976 .

[38]  Robert E. Bartels,et al.  Mesh Strategies for Accurate Computation of Unsteady Spoiler and Aeroelastic Problems , 2000 .

[39]  Carlos E. S. Cesnik,et al.  Nonlinear Aeroelastic Analysis of Complete Aircraft in Subsonic Flow , 2000 .

[40]  Chuh Mei,et al.  Finite element two-dimensional panel flutter at high supersonic speeds and elevated temperature , 1990 .

[41]  M. J. Lighthill,et al.  Oscillating Airfoils at High Mach Number , 1953 .

[42]  L Krist Sherrie,et al.  CFL3D User''s Manual (Version 5.0) , 1998 .

[43]  Michael G. Gilbert,et al.  Active Control of Aerothermoelastic Effects for a Conceptual Hypersonic Aircraft , 1990 .

[44]  Xiaolin Zhong,et al.  Hypersonic flutter of a curved shallow panel with aerodynamic heating , 1993 .

[45]  Chuh Mei,et al.  Large-amplitude finite element flutter analysis of composite panels in hypersonic flow , 1992 .

[46]  Peretz P. Friedmann,et al.  Hypersonic panel flutter studies on curved panels , 1995 .

[47]  C. Farhat,et al.  Mixed explicit/implicit time integration of coupled aeroelastic problems: Three‐field formulation, geometric conservation and distributed solution , 1995 .

[48]  Peretz P. Friedmann,et al.  New time-domain technique for flutter boundary identification , 1992 .

[49]  Eric L. Blades,et al.  AEROELASTIC ANALYSIS OF THE X-34 LAUNCH VEHICLE , 1999 .

[50]  Peretz P. Friedmann,et al.  Modeling approaches to hypersonic aerothermoelasticity with application to reusable launch vehicles , 2003 .

[51]  Peretz P. Friedmann,et al.  Aeroelastic analysis of hypersonic vehicles , 2004 .

[52]  E. F. Crawley,et al.  Frequency determination and non-dimensionalization for composite cantilever plates , 1980 .

[53]  Manuel Stein,et al.  Torsion and transverse bending of cantilever plates , 1951 .

[54]  Yuji Matsuzaki,et al.  Estimation of flutter boundary from random responses due to turbulence at subcritical speeds , 1981 .

[55]  L Kleb William,et al.  Aeroheating Predictions for X-34 Using an Inviscid-Boundary Layer Method , 1998 .

[56]  R. Ibrahim,et al.  Nonlinear flutter of orthotropic composite panel under aerodynamic heating , 1992 .