A carbon fiber-reinforced ceramic composite material forms an optical bench on the Juno spacecraft, scheduled to arrive at Jupiter in 2016. (Source: NASA)
naperlou, I was amazed that Juno is powered by solar panels. Aside from their size, solar power technology has obviously gotten a lot more powerful and power-dense if we can power a satellite with it for all that time.
Beth, I had the same thought also because of last week's post and discussion about space junk. And I think it would be excellent to be able to check out the materials' performance under such harsh conditions. But recovery and/or return cost a lot and isn't simple to do.
I agree, Ann, that returning a craft to Earth would be tricky. In addition to the technology needed to power the craft, gather and transmit data, the craft would also have to include materials to keep the craft from burning up as it re-enters Earth's atmosphere.
On return missions to earth, I wonder if there is danger of introducing new materials or elements or even viruses that could interact negatively with our environment. I wonder if there is a testing/incubation procedure to examine materials before they are openly exposed to earth and humans.
Ann, always enjoy information on the materials science side of things. If I could magically turn back the clock to my 20's I probably would have focused on that area for my degree. It would be interesting to see more articles about materials designed specifically for harsh or difficult environments. I'll bet those solar panels mentioned in the article are only distant cousins to the PV cells found in the consumer market for example.
Dave, thanks for that info on other materials, especially the shape memory composites. And the info about pyrolizing wood to make a ceramic is also fascinating.
Scott, I'd bet you are right about the solar panels on Juno being massively ruggedized compared to their commercial cousins. OTOH, as I discovered during the reporting for my upcoming June feature article on Materials for Miniaturization, the materials for making solar junction box and connector materials are going through a sea-change of increased strength as they get smaller and must increase their flame retardance and electrical and impact resistance properties. Meanwhile, DN has published several articles on structural materials and fasteners for harsh environments, including fasteners http://www.designnews.com/document.asp?doc_id=241288 coatings http://www.designnews.com/document.asp?doc_id=237966 smart paint http://www.designnews.com/document.asp?doc_id=238756 and adhesives http://www.designnews.com/document.asp?doc_id=237011
Ann—very very interesting article.Composites, I feel, represent the future of material science.Of course, we will never "outgrow" conventional materials; i.e. steel, aluminum, etc but composites can provide strength to weight ratios remarkably beneficial to design engineers for exotic uses such as the JUNO unmanned program.I also thought about material science but decided on mechanical engineering due to the great number of directions you can go relative to professional life.
bobjengr, thanks for the feedback. I agree that composites will not be the only material used for structural applications, but they certainly have a lot to offer that metals don't. I'm still amazed that they've gotten tough enough to go to Jupiter.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
Engineers at the University of California, San Diego are designing a robotic arm that takes inspiration from the loose, flexible, yet very strong structure of the armored plates on a seahorse's tail.
Researchers at the Missouri University of Science & Technology have designed a new nanoscale material that can transmit light faster than the 186,000 miles per second it usually takes to travel through air.
It has often been said that as California goes, so goes the nation. This spring, the state's wind power is setting energy generation records and solar energy generation is expected to rise sharply during the second half of 2013.
The latest model of Liquid Robotics' Wave Glider autonomous, unmanned marine vehicle (UMV), the SV3, is reportedly the world's first hybrid wave- and solar-power-propelled unmanned ocean robot.
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A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
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