Award Data

In most critical software systems, a state that is partially visible through values passed across interfaces contains information that could determine the health of the software system, and whether a failure is likely in the future. Some of this information behaves in a continuous fashion, e.g., the available memory or disk space is easily interpreted to monitor system health. Other values are nom ...

We will implement an environment for design, formal verification, compilation of code, and performance and power evaluation of Systems on a Chip (SOCs) consisting of heterogeneous processor cores that can be single-issue pipelined, superscalar, or VLIW, and are binary-code compatible with any existing Instruction Set Architecture (ISA). Particularly, we will ensure binary-code compatibility with t ...

The innovation in this SBIR Phase II project is the development of a unique triple junction inverted metamorphic technology (IMM), which will enable the manufacturing of very lightweight, low-cost, InGaAsP-based multijunction solar cells. The proposed IMM technology is based on ELO (epitaxial lift-off) and consists of Indium (In) and Phosphorous (P) solar cell active materials, which are designed ...

Southwest Sciences proposes to continue the development of a rugged, compact, and automated instrument for the high sensitivity measurement of tropospheric carbon monoxide (CO) and methane. The application of recently developed room temperature vertical cavity diode lasers (VCSELs)operating near 2300 nm permits the development of sensitive and rugged instrumentation for measurement of both atmosph ...

Based on the successful separation of 20 compounds using a 1 m coated microcolumn in Phase I, we propose to design a new micro-gas chromatograph (microGC) system to separate and detect of all contaminants listed in NASAs "Spacecraft Maximum Allowable Concentrations for Airborne Contaminants (SMACs)" using cabin air as the carrier gas, and to integrate the entire system to maximize the detection of ...

The challenges of designing, developing, and fielding man-rated propulsion systems continue to increase as NASA's mission moves forward with evolving solid propulsion requirements. Recent developments in simulating solid rocket motor environments include Lagrangian particle tracking, particle combustion models, dynamic particle drag and breakup models, and two phase impingement phenomena. T ...

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 Reduced-Order-Clustering-Uncertainty-Quantification (ROCUQ) methodology discussed in this proposal is specifically designe ...

The work will focus on the 3D implementation of the Phase 1 CHARM mesher, with solution-adaptive iteration for CFD and non-CFD applications. The proposed 3D method will incorporate and extend a previously developed method of generating field-guided hexahedral elements from a metric tensor field. While the fundamental technical approach?a combination of metric tensor conditioning, metric-tracing me ...

Knowing atmospheric 13CO2/12CO2 ratios precisely is important to understanding biogenic and anthroprogenic sources and sinks for carbon. Currently available field deployable instrumentation have unfavourable attributes such as high power requirements, are extremely expensive, are too large, are not proven or designed to run continuously or unattended for extended periods, and/or are unable to pr ...

The proposed innovation is an InGaAs-based, radiation-tolerant, micron-gap thermophotovoltaic (MTPV) technology. The use of a micron wide gap between the radiation source and the photovoltaic substantially increases the efficiency of the thermophotovoltaic. This work will be accomplished by combining MicroLink's state-of-the-art InGaAs-based epitaxial lift-off solar cell structure on an InP ...