It really shouldn't be a surprise that composites are not the be all and end all of advanced structures. Aluminum has served the aircraft industries well and is (relatively speaking) a fail-safe material...dings, dents and cracks are all fixable in aluminum....dings in composites you don't know about until you've got 12 feet of delamination flapping in the breeze. Dents require trepanning the damage out of the composite and rebuilding the location. Things like leading edges in composites are fine until you have a bird strike then it's easier to replace the whole leading edge. A bird strike on an aluminum leading edge is field fixable by any competent sheet metal basher...most get you home fixes are good enough for a number of flights since the pilot will be able to view the fix and make a decision on whether to fly. Try making the same decision on a composite fix and you don't know whether its good bad or indifferent. Alcoa et al are not going to go out of business because the new fad is composites...in fact they've still got a lot up their sleeves....variations in ARALL and GLARE are just two of the aluminum/composite hybrids that'll run circles around pure composites
One of the major reasons William Boeing chose Seattle to build his airplane factory was the ready availability of spruce (particularly Sitka spruce aka "Aircraft Spruce").
BASF's website at the link Susan gives below has a clickable overall diagram of the numerous types of plastics and other materials for an airplane manufactured by the company. While high-level, I found this info helpful in my background research. Clicking on any of the categories leads to a different diagram giving more detail. For example, the high-level diagram on the structural materials page
http://www.aerospace.basf.com/structural-materials/
gives an idea of where different types of composites, thermoplastics, PIM and polyurethane materials might be used in an aircraft.
I see this technology as being useful in the manufacture of jackscrews, ths component that is often used to actuate control surfaces. If it was constructed of a lightweight plastic with a low coefficent of friction, this would be less inertia needed to move the jackscrew (energy saving for the drive motor) and could possibly lessen the need for lubrication substances. Remember the Alaska Airlines DC-9 that crashed due to failure of the jackscrew from inadequate/wrong tytpe of grease?
sometimes new ideas generate new discovweries, consider a study of all species of bird feathers and the incredible design weight, lift, etc etc, flexible wings to use both mechanical power and atmospheric changes , perhaps the ultra lights culd take on a new perspective> my wing collection has some very old feathers that have not changed over time as I keep studing these designs which are incredible' I think there is legislation forbading feather collections, but I have a deep native american background, the race card and holocaust is not in my deck. My spirit remembers the genocide of americas 20,000 tribes, and the role buffalo soldiers played when freed. I worked for a time at LTV Aerospace in the 60's on the A-7 series, while no bird is powered with fuel they can indeed do some pretty tricky stunts, like gliding for hours, with small wing shifts , in acord with atmospheric variables, fins do compensate to keep on course, but consideration of actual feathers may be in our future. whatever. Birds of prey do reach considerable speed, without any fuel at all,
How totaly novel and unprecedented, building an airplane out of light strong fibrous composites. Ideas like that don't grow on trees. Wait---Or did they?
Maybe there's a reason why Boeing located its first factory in Washington State.
By refining topologies and using new fluid technology, Moog's new peak sine drive controller increases available power without increasing controller volume.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 3
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
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
To save this item to your list of favorite Design News content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
0 
