Award Data

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Cured aircraft composite materials present a particularly difficult challenge for recycling technology. Those materials have mostly thermosetting epoxy matrices and occur in intimate association with metals, paints, and coatings. Current techniques for recycling thermoset composites, mostly for automotive sheet molding compounds (SMC), involve pulverizing the material for use as fillers. Th ...

A novel tertiary recycling process is proposed for investigation as an economical means for recycling shipboard plastic waste. Early development work has shown that this process can convert a wide variety of polymers and composites into low molecular weight hydrocarbons at temperatures below 200'C. The hydrocarbons produced can then be reused as chemicals, fuels, or monomers. Metal, glass, and fil ...

Functionally smart materials, which have to ability to perform both sensing and actuating operations, are being developed to perform many aircraft type of control events. Smart materials, fabricated suing "continuous ferroelectric fibers," are being consider for full flight control of subsonic missiles, as the servoactuator system, specifically, and for active aerodynamic surface cont ...

The goal of this program is to design and fabricate selected liquid rocket engine combustion components. This goal will be accomplished by developing a low-cost, near net-shape technology for fabrication and rapid densification of ablation and oxidation-resistant LRE components for a wide variety of Air Force missions. The material which will be used for this purpose is zirconium diboride/boron ...

Solid Free Forming of monolith and uniform discrete reinforced materials has been demonstrated by fused deposition of heavily loaded slurries. In this program we will extend the fused deposition process to functional gradient material. The composition of material deposited will be controlled by the flow rates of two individual materials that are mixed in a low dead volume head. Thus, it will be po ...

The goal of this program is to develop a low cost, flexible manufacturing method for the production of Cf reinforced composites for ablation-resistant propulsion components for Theater Missile Defense (TMD) concepts. The matrix material selected for demonstration of the technology will be HfC, a material which has demonstrated good oxidation and ablation resistance at elevated temperatures.

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APPLICATION OF ADVANCED ORGANIC COMPOSITE AT CRYOGENIC TEMPERATURE IS OF CURRENT INTEREST. HOWEVER, RELATIVELY LIMITED DEVELOPMENT WORK HAS BEEN DONE IN THIS AREA. OUR UNDERSTANDING OF THE MECHANICAL AND CHEMICAL BEHAVIOR OF AN ORGANIC COMPOSITE MATERIAL AT CRYOGENIC ENVIRONMENT IS SOMEWHAT LACKING. IN ORDER TO UNDERSTAND THE FUNDAMENTAL MECHANISMS THAT AFFECT THE PERFORMANCE OF AN ORGANIC COMPOSI ...

ICE PHOBIC COATING MATERIAL, CURRENTLY USED BY THE U.S. NAVY SURFACE SHIPS OPERATING IN ARCTIC REGIONS AND NORTH AATLANTIC, IS ENVIRONMENTALLY UNSTABLE, PRASITIC, AND SACRIFICIAL IN NATURE. THIS PAPER PRESENTS A TECHNICAL APPROACH IN THE DEVELOPMENT OF A DIFFERENT TYPE OF TOP COAT/PAINT THAT IS ENVIRONMENTALLY STABLE, MAINTENANCE FREE WITH BUILT-IN RESISTANCE TO ICE AND FROST ACCERTION OR FORMATIO ...