Award Data

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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For monitoring trajectory and attitude of small missiles and projectiles, the positioning signal accessible from the GPS satellites may be used effectively anywhere on earth. While low-cost compact receivers using "GPS engines" are available, their use on-board highly maneuverable missiles is limited by the up-date rate, processing power, and the local oscillator stability over the operating envir ...

Rugged, reliable, light weight Uninterruptable Power Supplies (UPS) are needed to protect critical C4I systems from power failure in the field environment. Commercially available UPS provide this protection but are prohibitively large and heavy. SatCon Technology Corporation proposes to develop an extremely small, light-weight Flywheel Uninterruptable Power Supply (FWUPS) for this application. Thi ...

The following proposal describes a system which can be used for either surf zone and craft landing zone obstacle reconnaissance or clearance missions. The system, referred to a Sea Dog is a more sophisticated and capable version of the Lemmings surf zone mine neutralization munitions. The principle behind the Sea Dog concept is to swarm an area with inexpensive semi-sophisticated "smart" mu ...

This project will develop a preliminary design for an operationally effective, scalable, real-time wavelet-based compression system for data link applications that can process still frames, continuous line scanned imagery and video sequences. The system will feature a single decoder design capable of decompressiong any of the image formats; a common compressed data representation (bitstream); dyna ...

This proposal outlines the development of a high repetition rate high power, solid state laser to efficiently generate coherent energy in tunable wavelengths in the 3-5 micron range. The effort will utilize a 3OW CW-diode pumped Nd:YAG laser that has already been developed. This source will be combined with KTP OPO's to generate wavelengths in the 2 micron range at relatively high power. In the fi ...

SatCon proposes to develop cost effective permanent magnet variable speed drives (PM VSD's) for auxiliary applications on US Navy ships by integrating high density drive electronics with innovative PM motor designs to create a standardized set of rotating power modules with common electrical and coolant interfaces. SatCon will utilize its recent experience in developing a very high power den ...

Fatigue is a widespread phenomenon which accounts for the majority of structural failures in mechanical systems. [1] Fatigue failures are often catastrophic and without warning. For these reasons, the management of the effects of fatigue is of extreme importance to operators of fleets of aging aircraft. The U.S. Navy, for example, expends more than 2,000,000 man-hours per year managing aging effec ...

Under separate Navy funding, MSI has developed a low cost injection molding process for piezocomposite fabrication that has made these innovative materials available for the first time in manufacturing quantities. MSI has used this technology to make large area 1-3 type piezoelectric ceramic/polymer composite actuator panels for use in active surface control.These are now under evaluation by the N ...