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Impulsive acoustic sources have several advantages and disadvantages On the positive side, they are highly mobile and deliver a high source level without the use of connecting cables. On the negative side, their combination of high power and nondirectionality yields a high background of reverberation or clutter that obscures the desired echo. In addition, the transmit waveform cannot be easily alt ...

The goal of this proposed research is to prove the feasibility of a software solution to provide intelligent tutoring for the REGIS Training Center. Because students often learn best by example, we intend to design a tutoring system around example problems. We will apply the Artificial Intelligence (AI) technique of Case-Based Reasoning (CBR) to elicit and represent the example problems (or cases) ...

The ability to fully exploit the low level light vision advantages for surveillance systems offered by advanced two-dimensional infrared detector arrays is compromised by the cost, weight and size of existing analog sampling and multiplexing technologies. Amain Electronics proposes an innovative on focal plane digital readout approach which not only provides the necessary linear dynamic range, but ...

This Phase I program would examine the feasibility of developing aircraft seat cushions that can help crews of the AH-1W to survive crashes. The effort will focus on adapting novel hydraulic air cushioning structures (HACS) to absorb the impact energy of a crash. These HACS structures, which are elastomeric compounds with controlled air-flow passages, when incorporated within the seat or cushion, ...

To fully exploit the adverse weather potential of tilt-rotor aircraft, an ice detection system is required both for caution and warning and for management of ice protection systems. Appropriate ice detection capability will offer improved power consumption along with improved performance (e.g., effective ice shedding) and increased safety by alerting the crew to an unexpected icing encounter. A sy ...

Vibrations, particularly those generated by the rotor, affect all aspects of helicopter design. It has recently been demonstrated that helicopter rotor vibration comprises a periodic "component" and a chaotic "component." The periodic part can be eliminated using Higher Harmonic Control (HHC), leaving the chaotic component. Until recently, it was considered unfeasible to further reduce the vibrati ...

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Phase I will provide the design of a proof-of-concept integrated analysis tool for space-based optical experiments and demonstrate its feasibility through a prototype of a specific experiment (MSX). The design will facilitate data/model comparisons and the modeling of end-to-end data flow and processing for a space-based experiment. Object-oriented analysis and design will be used to define the sy ...