Award Data

ABSTRACT: Nanocrystals (NCs) offer many potential benefits for optical refrigeration; these quantum-confined materials have discrete energy levels, large optical transition dipole moments, and high photoluminescence quantum efficiency. Using well-characterized upconverting ion-doped metal oxide NCs and core-shell semiconductor nanocrystals as a baseline, a design of experiments (DOE) will be cond ...

ABSTRACT: Flight tests of hypersonic maneuvering vehicles are a challenging but necessary endeavor. While ground tests and numerical simulations can provide important guidance regarding vehicle performance, they are both limited in their reach. Likewise surface-based measurements during flight tests provide valuable information, but do not provide sufficient insight into the complex flowfield t ...

The proposed effort will utilize lithiated POSS in synergistic combination with commercial phosphates to achieve comparable processing characteristics and superior flame retardancy, smoke and toxicity to that of Derakane 510A. The POSS-phosphate synergist package will be formulated into a Hydrex nonhalogenated vinylester resin and superior mechanical properties (interlaminar shear strength and car ...

The ultimate objective of the work outlined in this proposal is to develop, demonstrate and commercialize a new technology for accurate, rapid, low-cost tooling for discreet parts manufacturing of high-performance composite components. This tooling results from a new tool-production process and is suitable for prototyping, repair,

The WASP-III Advanced Reconnaissance Device Network (WARDN) is a miniaturized VHF/UHF emitter geolocation system targeted for installation on micro-UAV platforms. The Mav6 design approach of embedded antenna design, compact RF circuit design, and load balancing the signal processing and geolocation tasks between the airborne payload and the ground unit enables significant size, weight, and power ...

As an alternative to double-base propellants we propose electric solid propellants (ESP) as a safe, green, higher performance alternative to double-base propellants for high velocity electro thermal chemical (ETC) canons. These new energetic materials are inherently safe, with ignition only possible via the sustained supply of electrical power and not by spark, flame or even bullet impact. A maj ...

Radiation-hardened, highly sensitive wavefront sensors (WFSs) with at least 256256 resolution and the capability for sustained operations at 10 kHz are necessary to support the high-speed control loops used for image stabilization and jitter suppression in MDA systems for airborne and spaceborne targeting, tracking, scoring, and ranging. To satisfy this need, in Phase I, InGaAs avalanche photodiod ...

A flash LADAR camera will be designed and demonstrated in the Phase I program. After fabricating a series of high-gain, low-excess-noise, back-illuminated avalanche photodiode (APD) arrays, including 88, 3232, 128128, and 256256 formats, the arrays will be hybridized to one or more existing flash LADAR readout integrated circuits (ROICs). After optical and electrical characterization, the LADAR fo ...

To improve the predictive capabilities of solid rocket motor end-of-burn phenomena, two analysis tools will be further developed. An existing engineering tool will go through continued development and validation, while an existing solid rocket ballistics model, built and demonstrated within a commercial CFD platform, will be expanded to allow for conjugate heat transfer between the burning grain ...

Polyhedral silsesquioxanes (POSS) will be modified using chloromethylation of aromatic POSS cages. These cages will then be co-cast, using solvent, with chloromethylated polysulfones and subsequently quaternized with monofunctional and difunctional trialkylamines in order to render crosslinked films containing the cage-structures. Subsequent alkalization will form anion exchange membranes with hi ...