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The proposed research program aims to develop a physics-based identification, modeling and management infrastructure for aeroelastic limit-cycle oscillations. This infrastructure will be built upon high fidelity state-of-the-art theoretical/computational methods as validated and verified by available experimental data bases, and will include (1) rapid flutter boundary determination for a wide ran ...

There is a high interest in developing advanced motors for hybrid electric vehicles that can provide improved performance at an affordable price. One approach to achieving this goal is to improve the magnetic performance of the permanent magnets used in electric motors, while maintaining a good thermal stability at lower cost. Because variable external magnetic fields in motors cause eddy curren ...

Electron Energy Corporation and University of Delaware propose to develop multiphase nanocomposite magnets with room temperature maximum energy product potentially up to 100 MGOe for high temperature applications. Multiphase nanocomposite magnets could take the advantage of the extremely high coercivity of SmCo alloys, the high saturation magnetization and moderate intrinsic coercivity of other ha ...

There is a tremendous need to develop alternative energy sources to alleviate the economic, political, and environmental burdens created by our continuing reliance on fossil fuel. Photovoltaic generation of electricity from the sun is an elegant and practical alternative source of usable energy. This project will research the use of silicon nanowires to develop and commercialize a high efficienc ...

Development of new generation of integrated FPAs that are both multispectral and polarimetric in the IR window is proposed for the detection and classification of battlespace objects. The use of existing sensor and camera technology, as the baseline, allows for reduced prototype and development time. The integration of both the wavelength and polarization selective elements within the FPA will p ...

Negative-electron-affinity (NEA) photocathodes, which produce polarized electrons, are a vital component of current electron accelerators. However, future systems, such as the International Linear Collider (ILC), will require significant upgrades to these photocathodes. For example, the polarized electron beam intensity will need to be at least 20 times greater than that produced by strained GaA ...

Negative-electron-affinity photocathodes, which produce polarized electrons, are a vital component of electron accelerators such as that at the Stanford Linear Accelerator Center. Future systems, such as the International Linear Collider, will require a polarized electron beam intensity at least 20 times greater than produced by strained GaAs, which is used in the current generation of photocatho ...

ABSTRACT: The innovation proposed is a computationally-tractable, physics-based, portable turbulent combustion modeling strategy for application to a wide range of Air Force aero-propulsive systems, including augmentors, liquid rockets and scramjets. This modeling strategy will be implemented within an Application Programming Interface (API) library suitable for easy integration within Air Force ...

ABSTRACT: Due to scarcity of spectrum, Dynamic Spectrum Access (DSA) becomes a needed technology to improve the utilization of electromagnetic spectrum for DoD satellite communication. However, current DSA approaches are developed for terrestrial communications without addressing the unique challenges for SATCOM environments such as error-prone spectrum sensing, high mobility, and large coverage. ...

ABSTRACT: Coordinating and sharing information across multi-level security (MLS) networks are of great interest in many military applications. However, it is very challenging to accomplish those goals due to the heterogeneous security classifications of different network domains. The recent proposed cross-domain solutions (CDS) provide initial steps to make such applications possible. However, th ...