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The proposed research program aims at developing a variable-fidelity software tool set for aeroservothermoelastic-propulsive (ASTE-P) modeling that can be routinely applied to the design of aerospace vehicles. The tool set can be applied to conventional vehicle types as well as hypersonic vehicles. The major issues involved in ASTE-P modeling and simulation will be significantly and extensively in ...

Power electronic converters are essential in every MDA vehicle, with use in critical systems ranging from electric power management applications, to power distribution, to on-board servo motor/actuator drivers. Advancing state-of-the-art power electronics technologies through the use of SiC semiconductors will produce significant savings across the board in almost all areas of MDA power management ...

In Phase I, the research team formed by APEI, Inc. and University of Arkansas proved the feasibility of developing ultra-wide temperature (-230 oC to +130 oC) motor drives utilizing silicon-germanium (SiGe) asynchronous logic digital control electronics by the successful design, simulation and layout of an insensitive-delay asynchronous microcontroller. The microcontroller incorporates asynchronou ...

The intent of the proposed effort is to investigate the detailed composite material performance characteristics after being subjected to cryogenic temperatures and impact damage. HyPerComp Engineering, Inc. (HEI) and Utah State University (USU) further propose to correlate these characteristics to composite overwrapped pressure vessels (COPVs) and demonstrate the correlation through actual COPV t ...

The intent of the proposed effort is to investigate the detailed composite overwrapped pressure vessel (COPV) performance characteristics after being subject to irradiation, hypervelocity micro-meteor impact, and cryogenic environments. This will result in a safer, more reliable design for high performance COPVs. This intent will be achieved via empirical characterization of composite raw materia ...

Integral Wave Technologies (formerly known as Arkansas Microelectronic Development Corporation) proposes to develop a process for growing ferroelectric, polycrystalline barium titinate (BaTiO3) thin-films, by anodic oxidation of co-sputteredbarium-titanium films (BaTi). Though films of this nature find applications in several electrical devices, Integral Wave will utilize this novel technology, if ...

We propose developing a compact, optical fiber-based Raman scattering instrument for rapid, in-situ analysis of composites, solid rocket motors, and propellants. The instrument will incorporate diode laser-based, full-spectrum Raman scattering forcontinuous in-situ remote monitoring of the composite and propellant chemistry. Narrow well defined Raman peaks and lack of sample preparation requirem ...

Conical scanning LIDAR systems and laser ranging systems that measure atmospheric backscatter, clouds, aerosols, winds, trace species, and sub-surface ocean layers require ruggedized construction and easy alignment. We are proposing to reduce the complexity and alignment chores by building five telescope objectives into one large shared aperture using holographic volume multiplexing techniques sim ...

We propose to exploit a new type of computing hardware and software to develop computers and circuits for remote manned and unmanned missions that are significantly more autonomous in dealing with faults or damage than current systems. The systems we will develop will contain self-repairing subsystems that, when given a single rebuild command by the system or by a person, can quickly diagnose thei ...