Award Data

The Acoustech Corporation as the prime contractor and the Pennsylvania State University - Applied Research Labc-atory as the subcontractor propose to design, manufacture, and test an underwater acoustic intensity probe containing a geophone and two-hydrophones encased in a neutrally buoyant package. The results of this proposed effort are anticipated to be highly successful since the researc ...

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Near-field frequency domain meaasurements of antennas over a planar aperture are commonly used to obtain far-field patterns. This technique has now bben formulation in the time domain, which is very desirable for short pulse signals. An additional benefit, particularly significant for antennas with low-sidelobes, arises from time domain measurements in that edge effects of a finite a ...

Currently, most antenna array designs are mechanically steered. However, as demand for higher performance antennas increases, an electronic replacement for the mechanical system becomes necessary. An alternative that may prove to be more cost effective is to use ferrite patch antennas as the elements in the array. The antenna's radiation characteristics are controlled by the direction and magni ...

Phase I proposes to demonstrate an easy-to-operate, inexpensive room temperature neutron detector based on boron-doped diamond. The detector would produce an immediate signal related to low-level neutron irradiation. The concept exploits the high neutron absorption cross section of B-10, which results in excellent sensitivity. The charge carriers generated in the diamond by a neutron absorption ev ...

40457 APS Technology Several advancements are needed to improve the efficiency and accuracy of hard rock drilling. Of particular interest are bottomhole assemblies (BHAs) which can grip the borehole wall in order to provide a platform from which torque and compressive force can be applied to the bit and the direction of drilling can be continuously monitored and controlled. This project will d ...