An aluminum alloy designated 7085 developed by Alcoa is getting a foothold in tough aircraft and military applications.
The first application of 7085 was for large die forgings on the Airbus A380 wing spars. Higher zinc along with reduced copper and magnesium content give the aluminum alloy excellent strength and high fracture toughness. It’s used in the Boeing Dreamliner for wing spars and engine pylons. It’s also being evaluated for thick structural parts, such as blast shields, on military vehicles.
Engineers shifted from titanium to 7085 for large forgings that form the center section of the bulkhead of the multinational Joint Strike Fighter’s F-35B variant for the US Marines and Royal Navy. Reason: To save weight. Titanium is 60 percent more dense than the aluminum alloy.
A composite based on a high-performance PEEK-like resin we told you about two years ago when it was still in R&D has now been licensed by the US Naval Research Laboratory (NRL) for commercial manufacturing.
Microsoft, HP, Dassault, and other industry heavyweights in 3D printing have launched a new 3DP file format, 3MF. The consortium says the spec will more fully describe a 3D model and will be interoperable with multiple applications, platforms, services, and printers.
NASA's been working on several different ongoing projects for 3D-printed rocket engine components in metals and now it's reached another first in aerospace 3D printing: a full-scale, 3D-printed rocket engine component made of copper.
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