Increasingly novel materials applications are emerging to provide lightweight thermal management functions in aircraft (such as the Boeing Dreamliner) and oher applications. One example is a metal matrix composite developed by a company called CPS Technologies in Norton, MA. In a typical component, a silicon carbide structure is formed in a plunger-type, low-pressure injection molding machine that uses a carrier feedstock that freezes near zero C. The carrier is removed by a phase management sublimation in which the carrier never becomes a liquid. The product can then either be sintered or infiltrated with material such as aluminum.
CPS says that AlSiC produces hermetic packaging that is much lighter than CuMo and CuW, yet has similar thermal conductivity and expansion coefficient. It also costs less.
NASA's MAVEN spacecraft has entered Mars' atmosphere, carrying instruments to help Earthlings figure out what happened to it. Launched last November, the spacecraft arrived at the red planet right on time after a journey of 442 million miles.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
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