LAngley Stability and TRansition Analysis Code (LASTRAC) Version 3.0(LAR-19464-1)

LASTRAC3.0 is the first US release of the LASTRAC series of software for chemically reacting flows. The code is designed to be backward compatible to the original LASTRAC release since 2004. Users of the original release are strongly encouraged to upgrade to LASTRAC3.0 as the new software has improved functionality and new Python utility scripts available for either perfect or reacting gas applications. In short, LASTRAC3.0 can handle boundary layers or shear layers with perfect, equilibrium, chemical nonequilibrium, or thermal nonequilibrium (two-temperature) chemistry effects. Users can choose between the default publicly available widely-used five-species air and any user-defined chemistry compositions/models in a table or dynamically-linked-library format. Solution methods allowed for the user-provided perfect or reacting mean flows include Linear Stability Theory (LST), linear/nonlinear Parabolized Stability Equations (PSE) for 2D/axisymmetric/infinite swept wing or full 3D boundary layers. Nonlinear PSE functionalities in this release is restricted to perfect gases only. Future release will include that for reacting flows.