A Hypersonic Vehicle Model Generator for MASIV

Control law design for air-breathing hypersonic vehicles requires an understanding of the strong and complex interactions between the propulsion system, aerodynamics, and aircraft structure. In an eort to advance this understanding, reduced-order modeling tools have been developed in recent years. The Michigan/AFRL Scramjet In Vehicle scramjet performance analysis tool is used to quickly analyze vehicle dynamics, determine ight envelopes, and develop control laws for X-43 class vehicles. This paper describes the development and capabilities of a vehicle model generator that can be used to create surface meshes for a wide variety of hypersonic vehicles with two-dimensional owpaths. The vehicle geometry models are compatible with MASIV, the Cart3D ow solver package, and computer-aided design programs. We discuss the methods employed in building a vehicle surface mesh and verify the ability to generate a model of a given vehicle. In addition, the validity of MASIV aerodynamic analysis is investigated through comparison to that of Cart3D.

[1]  Michael A. Bolender,et al.  An overview on dynamics and controls modelling of hypersonic vehicles , 2009, 2009 American Control Conference.

[2]  Jerald M. Vogel,et al.  Modeling and Analysis Framework for Early Stage Trade-off Studies for Scramjet-Powered Hypersonic Vehicles , 2009 .

[3]  Chandrajit L. Bajaj,et al.  Stable mesh decimation , 2009, Symposium on Solid and Physical Modeling.

[4]  Carlos E. S. Cesnik,et al.  Six-Degree-of-Freedom Simulation of Hypersonic Vehicles , 2009 .

[5]  Carlos E. S. Cesnik,et al.  Hypersonic Vehicle Flight Dynamics with Coupled Aerodynamics and Reduced-order Propulsive Models , 2010 .

[6]  Paul S. Heckbert,et al.  Survey of Polygonal Surface Simplification Algorithms , 1997 .

[7]  Sean M. Torrez,et al.  Multidisciplinary Optimization of the Fuel Consumption of a Dual Mode Scramjet-Ramjet , 2011 .

[8]  Matthew Fotia,et al.  Reduced-Order Modeling of Two-Dimensional Supersonic Flows with Applications to Scramjet Inlets , 2010 .

[9]  Gediminas Adomavicius,et al.  A Parallel Multilevel Method for Adaptively Refined Cartesian Grids with Embedded Boundaries , 2000 .

[10]  Michela Spagnuolo,et al.  Shape Analysis and Structuring , 2008 .

[11]  Marco Attene,et al.  Recent Advances in Remeshing of Surfaces , 2008, Shape Analysis and Structuring.

[12]  Avraham Margalit,et al.  An algorithm for computing the union, intersection or difference of two polygons , 1989, Comput. Graph..

[13]  Michael J. Aftosmis,et al.  Multilevel Error Estimation and Adaptive h-Refinement for Cartesian Meshes with Embedded Boundaries , 2002 .

[14]  Craig Gotsman,et al.  Explicit Surface Remeshing , 2003, Symposium on Geometry Processing.

[15]  Carlos E. S. Cesnik,et al.  Thermoelastic Formulation of a Hypersonic Vehicle Control Surface for Control-Oriented Simulation , 2009 .

[16]  Muhammad Hussain,et al.  Efficient and Feature-Preserving Triangular Mesh Decimation , 2004, WSCG.

[17]  Michael A. Bolender,et al.  Flight Envelope Calculation of a Hypersonic Vehicle Using a First Principles-Derived Model , 2011 .

[18]  Paolo Cignoni,et al.  A comparison of mesh simplification algorithms , 1998, Comput. Graph..

[19]  Carlos E. S. Cesnik,et al.  Proper orthogonal decomposition for reduced-order thermal solution in hypersonic aerothermoelastic simulations , 2010 .

[20]  Sean M. Torrez,et al.  Performance Analysis of Variable-Geometry Scramjet Inlets Using a Low-Order Model , 2011 .