An integrated experimental and computational investigation of non-conventional nozzles and series of nozzles in crosswind environments is proposed. The experiments will be conducted at the University of Illinois and will provide a validation test bed for numerical simulations. High-fidelity… More

An integrated experimental and computational investigation of non-conventional nozzles and series of nozzles in crosswind environments is proposed. The experiments will be conducted at the University of Illinois and will provide a validation test bed for numerical simulations. High-fidelity… More

We propose a joint experimental and computational program to predict the behavior of heterogeneous energetic materials, specifically the properties and dynamics of their initiation, during slow and fast cookoff for insensitive munitions testing. The experimental effort will involve gram-scale fast… More

Material characterization and volume imaging of as-produced solid propellant grains are important issues in the design process of solid rocket motors. In particular, it is critical that the ballistician have tools that will enable him/her to understand any defects or morphological changes in a grain… More

We propose a comprehensive computational and experimental program to investigate the characteristics and dynamic behavior of novel energetic propellants for space propulsion. Several classes of advanced propellants will be considered. These include "green" propellants (no chlorine) such as GAP/ADN… More

We propose a comprehensive computational and experimental program to investigate the charac-teristics and dynamic behavior of nano-size aluminum in novel energetic materials. Two classes of advanced propellants will be considered. The first will be composite propellants, consisting of solids… More

Broadband fan noise ýý closely tied to turbulent flow on and around the fan blades ýý represents a key challenge to the noise reduction community due to the interaction of a highly turbulent flow field with complex, moving geometries. Prediction and high-fidelity simulation of fan noise demands… More

A computational investigation of missile interceptor base flows in a supersonic/hypersonic application is proposed. High-fidelity three-dimensional simulations will be conducted using the proprietary framework Rocstar. The computational framework includes a compressible flow solver with advanced LES… More

A collaborative effort is proposed between IllinoisRocstar LLC and the University of Illinois to develop and commercialize a computational framework to investigate nozzle erosion in solid-propellant rocket motors (SRM) and tangential instability modes in liquid rocket engines (LRE). For SRM, highly… More

IllinoisRocstar LLC envisions the initial product of this effort to be a shock-to-detonation module (Rocpack-RocSDT) for inclusion in our insensitive munitions simulation code, IMSIM. IMSIM is a first-generation software product for the simulation of energetic material behavior in insensitive… More

This proposal addresses methods for efficient quantification of margins and uncertainties (QMU) for models that couple multiple, large-scale commercial or proprietary simulation codes, effective methods for treating epistemic uncertainty in large scale simulations, scalability to models with… More

Abstract

Abstract

We propose a Phase II joint experimental and computational program to predict the behavior of heterogeneous energetic materials. Specifically the system will predict the properties and dynamics of their initiation during slow and fast cookoff experiments in fully-instrumented tests cells, allowing… More

Predicting the violent behavior of energetic materials in accident scenarios is an important issue for the analysis of the performance of explosives and solid rocket propellants. We propose a computational program to predict the shock initiation behavior and subsequent energy release that leads to… More

Impinging supersonic jets can generate intense sound through a resonance phenomena, with tones approaching 15 dB beyond the already-loud baseline noise levels. The source of impinging jet noise, including that created by jet blast deflectors, is broadly the interaction between jet and deflecting… More

We propose to enhance and commercialize software tools for imaging and three-dimensional reconstruction of as-produced propellant grains from micro-tomographic volume-imaging techniques; computational tools that model the morphology of the propellant grain, including first-, second-, and third-order… More

There are a number of noise sources on a typical wind turbine, including tower-blade interaction, gust-induced noise, trailing edge noise, and power train noise. Significant improvements in noise reduction and/or noise isolation have been made to many of the mechanical and tonal noise sources, but… More

Propagation of parameter uncertainties through large computer models can be very resource intensive. Frameworks and tools for uncertainty quantification are generally geared to individual codes, are research codes, or are single-purpose tools such as LHS matrix generators. The… More

An engineering computational model is proposed to investigate ignition, combustion and performance of nano-energetic particles in a variety of oxidizing environments, including those found in rockets and air breathing propulsion devices. The computational model will include appropriate models for… More

We propose a collaborative effort between IllinoisRocstar LLC and the University of Illinois to develop validated computional tools to assess flow separation in advanced weapon systems. The initial application of the simulation system will be an aft-end jet thruster in a supersonic regime.… More

IllinoisRocstar LLC will develop, validate, and commercialize computational tools that predict the shock sensitivity of energetic materials as a function of their formulations. Specifically we will (i) use our novel packing code, Rocpack, to generate morphologies of interest for shock sensitivity… More

IllinoisRocstar LLC will develop and commercialize an innovative multiscale computational framework that predicts the behavior of aluminum particles as they evolve from the grain surface, combust, pass through the nozzle, and into the plume exhaust. Based on high-fidelity, physics-based simulations… More

ABSTRACT: An engineering computational simulation tool based on the shrinking core model of nanoparticle combustion is proposed to investigate ignition, combustion and performance of nano-energetic particles in a variety of oxidizing environments, including those found in rockets and air breathing… More