Award Data

The widespread use of per- and polyfluorinated alkyl species (PFAS) chemicals for commercial products and industrial applications has resulted in bioaccumulation of these chemicals in the environment and a public health hazard. Development of novel approaches for in situ degradation of PFAS in industrial and landfill wastewaters would greatly facilitate efforts to prevent discharge of these hazard ...

Per- and polyflouralkyl substances, otherwise known as PFAS, are a large group of chemicals including perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). These chemicals have a large variety of uses globally. Remediation of PFAS has gained importance due to their environmental persistence and toxicity. Water treatment methods must combine multiple strategies to be effective, as PF ...

Due to release of industrial and landfill effluent into the environment, per- and polyfluorinated alkyl species (PFAS) have been accumulating in soil, sediment and groundwater, with subsequent absorption by living organisms. PFAS have the potential to cause multiple adverse health effects, including low birth weight, accelerated puberty, and cancer. Novel approaches for in situ degradation of PFAS ...

Electrified Aircraft Propulsion (EAP) research is part of NASA effort to improve aircraft fuel efficiency, emissions, and noise levels. New secondary battery chemistries are required to meet the 500 ndash; 700 Wh/kg cell level specific energy needs of UAM, all-electric helicopters and regional passenger aircraft. The cycle life, currently at asymp; 1500 ndash; 3000 cycles, also needs substantial i ...

Rotating Detonation Engine (RDE) design is challenging due to the lack of in-depth understanding of many key mixing and combustion processes. The RDE flow field is a nonuniform mixture of fuel and oxidizer concentrations with strong injector effects, large turbulence effects, multiple shockwaves, and shear layers. These inhomogeneities can lead to significant combustion inefficiencies which have a ...

Cornerstone Research Group Inc. (CRG) proposes to advance the state-of-the-art in space vehicle Thermal Protection Systems (TPS) through in-situ application and curing of a proprietary new resin technology called MG Resin, a family of thermoset formulations. The resins are being explored with DARPA, MDA, NASA, and the Army for a range of applications including C/C hot structures, TPS, syntactic in ...

One potential way to achieve N+3 goals is the introduction of ceramic matrix composite (CMC) materials into turbine engines. The introduction of CMC vanes and/or blades into turbine engines lead to gains in specific fuel consumption (SFC) by allowing higher operating temperatures, reductions in required cooling, and reductions in vehicle weight. Thermal barrier and environmental barrier coatings ( ...

Sources of sensor errornbsp;leave a UTMnbsp;(UAS Traffic Management)nbsp;system vulnerable.nbsp;Thenbsp;impact of anomalous sensor behavior can be devastating to a UTM system. Degraded sensor accuracy can lead to broken tracksnbsp;ornbsp;split tracks within a UTM system.nbsp;Degraded sensor sensitivity may result in a Mid-Air Collision with an aircraft not detected bynbsp;UTMnbsp;sensors.nbsp;It m ...

A new UV imaging polarimeter design was demonstrated by Optical Coating Solutions, Inc. (OCS) as a proof-of-concept breadboard in a 2016 Phase I effort (NASA Contract NNX16CA44P). A version of that generic design is proposed for atmospheric studies in a follow-on effort.nbsp;The new polarimeter design can operate to wavelengths as short as 260nm and does not employ electronic or mechanical modulat ...

In space environments, particularly for low powered satellites (such as cubesats), onboard neural processing has many applications. One of the key neural algorithms that would be highly useful is reinforcement learning for cognitive communications in software-defined radios. In reinforcement learning a policy function is used for determining action and needs to be updated based on environmental in ...