Low Parasitic Heterojunction Bipolar Power Transistors

Not Available The objective of this project is to demonstrate the capability and affordability of rigid polyurethane foams (RPF) as an expedient construction material to improve operational capability of Marine Corps units conducting expeditionary operations. The function of this material is to fill gaps or crossings, serve as a barrier or channeling material, and stabilize beaches and marshes. It will serve the function of concrete or asphalt, but it requires less material, and is easier to mix and apply. In Phase I, we propose to develop the technical specifications for the material, develop a RPF meeting those specifications, and develop a prototype machine for dispensing and mixing the ingredients to make the RPF. With this machine, we will demonstrate our ability to make the RPF meeting the specifications of the project and will prepare a quantity of product RPF for evaluation by the client agency. In Phase II, we will modify the specifications of the RPF if necessary, based on the client agency's evaluation of the product from Phase I, develop a full scale machine for field application of large amounts of the RPF that we developed in Phase I, and will carry out a field demonstration of the apparatus and material.