Award Data

The objective of this research is to design a micromechanical temperature sensor capable of recording temperature extremes experienced beyond a preset value without the use of electrical power. The temperature sensor's memory will be mechanically induced. The sensor will be either in an electronically resettable form, or, less expensively, in a disposable form. The proposed device will be microfab ...

Plasma assisted processing techniques are widely used in many industries to synthesize materials at low process temperatures. Stringent precision requirements for devices and the demand for low cost manufacturing techniques emphasize the need for optimizing plasma reactors. Numerical simulation offers a quick and inexpensive alternative/supplement (to hardware experimentation) for designing new an ...

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Compact Software, a leading software company in development of CAD tools for microwave industry has teamed up with Martin Marietta, Electronic and Missile System group, to develop accurate CAD tools for Coplanar Waveguide (CPW) discontinuity structures. The lack of comprehensive design information on discontinuities and other interacting structures, especially in the commercial CAD-tools, has so f ...

The use of ZnGeP2 in nonlinear optical applications has been limited in the past due to an extrinsic absorption in the near infrared. Defect studies of ZnGeP2 indicate that the extrinsic absorption is due to nonstoichiometry (as a result of high volatility of some components at the temperatures required for melt growth) and/or order-disorder (resulting from growing crystals in the high temperatur ...

Dynetics proposes an innovative combination of analog and digital technology to produce a Lock-In Acousto-Optic correlator for application in pulse-coupled neural networks. Our unique approach uses a time-integrating optical correlator and high-speed, two-dimensional digital processing for matched filtering of repetitious waveforms of unknown pulse repetition frequency (PRF). Dynetics' proposed ap ...

The next generation of tactical missiles will use several types of non-traditional propulsion systems, each of which requires a control system. A method is required to economically and thoroughly evaluate and analyze the propulsion control system without risking expernsive, one-of-a-kind, prototype propulsion systems. Electronic Concepts and Engineering Inc. proposes to develop a real-time simula ...

Presently available technology for converting logistic fuels to hydrogen for use in fuel cells is unsatisfactory in three fundamental ways. First there is the problem that the hydrogen that is produced in the initial fuel gasification step contains impurities such as CO, H,S and NH, which must be removed since they would poison the fuel cell. Secondly the hydroden is diluted with CO, and N2 which ...

Fast Fourier transformers (FFFs) are used extensively in military and commercial applications. There is a constant demand for faster and more accurate FFTS. RNS (Residue Number System) based FFTs are candidates to provide these improvements, however techniques for efficient implementation of RNS operations must first be developed. RNS operations will be develope in the proposed Phase I research th ...

A power controller is described which has increased power capability (50-100 Hp range), improved efficiency, reduced cost, and increased control capability for control of onboard auxillary power sources. A full four-quadrant control inverter uses a variable frequency, quasi-resonant four-quadrant H-bridge configuration and a phase shifted PWM controller for control of a three phase AC induction mo ...