The Missile Operational Signatures Toolkit

Spectral Sciences, Inc., in collaboration with Lockheed Martin Missiles and Space, proposes to develop the Missile Operational Signatures Toolkit, dubbed MOST, to address post-boost phenomena for high altitude (above 80 km) missile systems. MOST will becapable of treating a wide variety of post-boost phenomena, including propellant venting, thrust termination, PBV deployment plume-plume and plume-body impingement signatures, and missile debris clouds. The diversity and complexity of post-boostsignatures is challenging to capture in a model simulation due to their unsteady and 3D nature. Our approach will be to incorporate two state-of-the-art DoD codes, SOCRATES for 3D steady and unsteady gas and particle flow fields and chemistry, and FLITESfor equilibrium and non-equilibrium gas and particle emission spectra. MOST will feature a number of technical innovations in the source flow, chemistry, and molecular spectroscopy areas. In Phase I, a prototype version of MOST will be created andapplied to the liquid propellant vent problem with sample calculations and comparisons with field observations. In Phase II, the propellant vent capability will be fully developed and integrated into MOST and modules for other post-boost phenomena wouldbe pursued. The primary product will be the Missile Operational Signatures Toolkit (MOST). This toolkit will incorporate the state-of-the-art SOCRATES code for plume modeling and the FLITES code for radiative transfer. The enhancements that will be madeto the SOCRATES code and databases during the development of MOST in Phase II will give it additional functionality. As it is proposed to turn SOCRATES into a commercial product under other efforts, these enhancements will make SOCRATES more attractive tothe government and commercial sectors. By introducing new source flow modules, the proposed MOST development will extend the capability of SOCRATES to commercial applications such as chemical vapor deposition. Module definition will be standardized tofacilitate development of additional specific applications in Phase III. By broadening the reach of SOCRATES, it will gain users with applications as diverse as microelectromechanical systems (MEMS) modeling and development, etching and vapor depositionmodeling, astrophysics and gas/solid interaction chemistry, and reentry vehicle modeling.