Award Data

All NASA modeling and simulation activities are mandated to provide uncertainty characterization and quantification of the underlying physics submodels and their propagation towards the simulation output metrics. Recently developed simulation tools to predict Plume-Surface Interaction (PSI) effects such as dust lofting, obscuration, debris transport, and surface cratering lack practical uncertaint ...

Power electronic components with high operating voltages are desirable in NASA Power Management and Distribution (PMAD) systems as they result in reduced mass and higher efficiency at the system level. Gallium nitride (GaN) offers significant advantages over state-of-the-art silicon (Si) technologies for power electronic applications including higher breakdown voltage and power density, faster swi ...

Ice accretion on aircraft can trigger flow separation and degrade aerodynamic performance by reducing lift and stall angle-of-attack, increasing drag, and in severe cases causing complete loss of aircraft control. Modeling and quantification of icing effects on aircraft performance therefore plays a critical role in aircraft design and certification. High-fidelity CFD analyses of aircraft with imp ...

Lightweight, advanced structural materials are needed to enable affordable space exploration beyond lower Earth orbit. Composites have been studied and used for these applications for decades, but are still limited to off-optimal, quasi-isotropic designs. Integration of dissimilar fiber layups and novel matrix materials in the composite structure can lead to significant improvements in material pr ...

Reconfigurable and adaptive hardware systems are essential parts of NASA applications due to the unavoidable uncertainties and variations due to extreme operational conditions, radiation effects, modifications of standard and requirements, varying user preferences and high development cost. Moreover, adaptability at the hardware level provides increased flexibility and capabilities. While electron ...

The goal of the proposed effort is to develop a framework for configurable reduced-order modeling (ROM) for the development of novel aeroservoelastic (ASE) sensing and control approaches within a broad flight parameter space. Parametric ROM techniques developed by the proposing teams present a considerable opportunity to extract dominant aerodynamic and structural dynamics in a compact form that c ...

Abstract Current in vitro platforms are poor predictors of the in vivo safety, efficacy and pharmacokinetics of therapeutics, owing to a significant difference in the test conditions compared to physiological conditions. Therefore, drug toxicity testing is routinely performed using animal models. However, animal testing is expensive and time consuming. In addition, ethical concerns about the use o ...

There is a growing need for faster target recognition algorithms that also reduce power consumption and information bandwidth. Optical analog computing systems can fill this need by offloading the most computationally expensive tasks to the optics; however, traditional systems are too heavy and bulky for size, weight, and power-constrained platforms. In this work, we will develop a mid-wave infrar ...

The objective of this STTR project is to develop a computational geometry framework with efficient conforming methods for design, analysis, and optimization of the performance of mobility system components. Phase I successfully developed and demonstrated two isogeometric mesh generation approaches: one by extending an existing high-order mesh generator from linear mesh and one by automated paramet ...

There is a growing need to develop inexpensive, lightweight mid/long-wave infrared (M/LWIR) devices for applications including gas sensing, point-to-point free-space communication, and bio sensing. Most of these applications require well-collimated, spectrally narrow beams which are currently achieved using MWIR laser sources. However, these lasers are expensive and bulky, which limits their use i ...