The U.S. Navy program to improve the reliability and seaworthiness of its Hovercrafts is moving forward. As first reported by Design News, Navy engineers are changing the technology used to attach the rubber-pleated skirts that contain high-pressure air that moves the craft above water. Newly developed fasteners can be replaced with regular tools, speeding replacement of damaged skirts. The new TineLok system has one or more tines that work in conjunction with longitudinal bolt thread channels to prevent counter rotation and loosening. The skirt manufacturer, Avon Rubber, has sent a purchase order for the first Navy Hovercraft replacement program. Orders to cover the rest of the fleet are expected to begin in May. There are 100 skirts on each Hovercraft and maintenance costs will be cut 25 to 30 percent. The first fasteners are all stainless: the nut, the tine and bolt. Tests are also being conducted on plastic versions that cut weight by 75 percent. Nuts and bolts are made from PEEK and the tine is made from glass-reinforced nylon. Rod is being machined for the sample run. The Army is looking at the technology for some of its weapons systems. It may also have applications for fastening of lighting in various applications.
Listen to a podcast on the new Hovercraft fastening technology.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
At the JEC Europe 2015 composites show in Paris last month, makers of composite materials, software, and process equipment showed off their latest innovations. This year's show saw some announcements related to automotive applications, but many of the improvements came in the world of aerospace.
The DuPont-sponsored Plastics Industry Trends survey shows engineers want improved performance in a broad range of plastics and better recycling technology. These concerns top even processing enhancements that improve productivity.
Plastics leader SABIC recently announced a global initiative to help its customers take advantage of additive manufacturing (AM) and also advance 3D printing (3DP) technologies in several application areas. The company's plans go way beyond materials, and also include design, processing, and part performance.
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